Z80CTC, Z8430
Z80 Counter-Timer Circuit.
??????? +-----+--+-----+
???? D4 |1??? +--+?? 28| D3
???? D5 |2?????????? 27| D2
???? D6 |3?????????? 26| D1
???? D7 |4?????????? 25| D0
??? GND |5?????????? 24| VCC
??? /RD |6?????????? 23| CLK0 TRG0
ZC0 TO0 |7?? Z8430?? 22| CLK1 TRG1
ZC1 TO1 |8??? CTC??? 21| CLK2 TRG2
ZC2 TO2 |9?????????? 20| CLK3 TRG3
? /IORQ |10????????? 19| A1
??? IEO |11????????? 18| A0
?? /INT |12????????? 17| /RST
??? IEI |13????????? 16| /CE
??? /M1 |14????????? 15| CLK
??????? +--------------+

Z80DART, Z8470
Z80 dual async/sync serial I/O.
Z8470 (DART) has no synchronous capabilities.
??????? +-----+--+-----+
???? D1 |1??? +--+?? 40| D0
???? D3 |2?????????? 39| D2
???? D5 |3?????????? 38| D4
???? D7 |4?????????? 37| D6
?? /INT |5?????????? 36| /IORQ
??? IEI |6?????????? 35| /CE
??? IEO |7?????????? 34| A0 B/A
??? /M1 |8?????????? 33| A1 C/D
??? VCC |9?????????? 32| /RD
/W_RDYA |10?? Z8440? 31| GND
?/SYNCA |11?? SIO-0? 30| /W_RDYB
?? RxDA |12????????? 29| /SYNCB
? /RxCA |13????????? 28| RxDB
? /TxCA |14????????? 27| /RxTxCB
?? TxDA |15????????? 26| TxDB
? /DTRA |16????????? 25| /DTRB
? /RTSA |17????????? 24| /RTSB
? /CTSA |18????????? 23| /CTSB
? /DCDA |19????????? 22| /DCDB
??? CLK |20????????? 21| /RST
??????? +--------------+

Z80DMA, Z8410
Z80 DMA controller.
????????? +-----+--+-----+
?????? A5 |1??? +--+?? 40| A6
?????? A4 |2?????????? 39| A7
?????? A3 |3?????????? 38| IEI
?????? A2 |4?????????? 37| /INT /PULSE
?????? A1 |5?????????? 36| IEO
?????? A0 |6?????????? 35| D0
????? CLK |7?????????? 34| D1
????? /WR |8?????????? 33| D2
????? /RD |9?????????? 32| D3
??? /IORQ |10?? Z8410? 31| D4
????? VCC |11??? DMA?? 30| GND
??? /MREQ |12????????? 29| D5
???? /BAO |13????????? 28| D6
???? /BAI |14????????? 27| D7
?? /BUSRQ |15????????? 26| /M1
/CE /WAIT |16????????? 25| RDY
????? A15 |17????????? 24| A8
????? A14 |18????????? 23| A9
????? A13 |19????????? 22| A10
????? A12 |20????????? 21| A11
????????? +--------------+

Z80PIO, Z8420
Z80 parallel I/O.
?????? +-----+--+-----+
??? D2 |1??? +--+?? 40| D3
??? D7 |2?????????? 39| D4
??? D6 |3?????????? 38| D5
?? /CE |4?????????? 37| /M1
C/D A1 |5?????????? 36| /IORQ
B/A A0 |6?????????? 35| /RD
?? PA7 |7?????????? 34| PB7
?? PA6 |8?????????? 33| PB6
?? PA5 |9?????????? 32| PB5
?? PA4 |10?? Z8420? 31| PB4
?? GND |11??? PIO?? 30| PB3
?? PA3 |12????????? 29| PB2
?? PA2 |13????????? 28| PB1
?? PA1 |14????????? 27| PB0
?? PA0 |15????????? 26| VCC
?/ASTB |16????????? 25| CLK
?/BSTB |17????????? 24| IEI
? ARDY |18????????? 23| /INT
??? D0 |19????????? 22| IEO
??? D1 |20????????? 21| BRDY
?????? +--------------+

Z80SIO, Z80SIO0, Z8440, Z8470
Z80 dual async/sync serial I/O.
Z8470 (DART) has no synchronous capabilities.
??????? +-----+--+-----+
???? D1 |1??? +--+?? 40| D0
???? D3 |2?????????? 39| D2
???? D5 |3?????????? 38| D4
???? D7 |4?????????? 37| D6
?? /INT |5?????????? 36| /IORQ
??? IEI |6?????????? 35| /CE
??? IEO |7?????????? 34| A0 B/A
??? /M1 |8?????????? 33| A1 C/D
??? VCC |9?????????? 32| /RD
/W_RDYA |10?? Z8440? 31| GND
?/SYNCA |11?? SIO-0? 30| /W_RDYB
?? RxDA |12????????? 29| /SYNCB
? /RxCA |13????????? 28| RxDB
? /TxCA |14????????? 27| /RxTxCB
?? TxDA |15????????? 26| TxDB
? /DTRA |16????????? 25| /DTRB
? /RTSA |17????????? 24| /RTSB
? /CTSA |18????????? 23| /CTSB
? /DCDA |19????????? 22| /DCDB
??? CLK |20????????? 21| /RST
??????? +--------------+

MAX703
uP supervisor circuit with battery backup.
/RST remains low for 200ms after VCC exceeds 4.65V. On power failure VCCo is connected to VBAT, PFI and /MR are disabled, /RST and /PFO are low.
???? +---+--+---+
VCCo |1? +--+? 8| VBAT
?VCC |2? MAX?? 7| /RST
?GND |3? 703?? 6| /MR
?PFI |4??????? 5| /PFO
???? +----------+

765
Floppy disk controller.
?????? +-----+--+-----+
?? RST |1??? +--+?? 40| VCC
?? /RD |2?????????? 39| /RW SEEK
?? /WR |3?????????? 38| LCT DIR
?? /CE |4?????????? 37| FR? STEP
D/S A0 |5?????????? 36| HDL
??? D0 |6?????????? 35| RDY
??? D1 |7?????????? 34| WP? TS
??? D2 |8?????????? 33| FLT TR00
??? D3 |9?????????? 32| PS0
??? D4 |10?? 765??? 31| PS1
??? D5 |11?? FDC??? 30| WDA
??? D6 |12????????? 29| US0
??? D7 |13????????? 28| US1
?? DRQ |14????????? 27| HD
?/DACK |15????????? 26| MFM
??? TC |16????????? 25| WE
?? IDX |17????????? 24| VCO SYNC
?? INT |18????????? 23| RDD
?? CLK |19????????? 22| RDW
?? GND |20????????? 21| WCLK
?????? +--------------+

Z80SIO1, Z8441
Z80 dual async/sync serial I/O (bonding option #1).
??????? +-----+--+-----+
???? D1 |1??? +--+?? 40| D0
???? D3 |2?????????? 39| D2
???? D5 |3?????????? 38| D4
???? D7 |4?????????? 37| D6
?? /INT |5?????????? 36| /IORQ
??? IEI |6?????????? 35| /CE
??? IEO |7?????????? 34| A0 B/A
??? /M1 |8?????????? 33| A1 C/D
??? VCC |9?????????? 32| /RD
/W_RDYA |10?? Z8441? 31| GND
?/SYNCA |11?? SIO-1? 30| /W_RDYB
?? RxDA |12????????? 29| /SYNCB
? /RxCA |13????????? 28| RxDB
? /TxCA |14????????? 27| /RxCB
?? TxDA |15????????? 26| /TxCB
? /DTRA |16????????? 25| TxDB
? /RTSA |17????????? 24| /RTSB
? /CTSA |18????????? 23| /CTSB
? /DCDA |19????????? 22| /DCDB
??? CLK |20????????? 21| /RST
??????? +--------------+

Z80SIO2, Z8442
Z80 dual async/sync serial I/O (bonding option #2).
???????? +-----+--+-----+
????? D1 |1??? +--+?? 40| D0
????? D3 |2?????????? 39| D2
????? D5 |3?????????? 38| D4
????? D7 |4?????????? 37| D6
??? /INT |5?????????? 36| /IORQ
???? IEI |6?????????? 35| /CE
???? IEO |7?????????? 34| A0 B/A
???? /M1 |8?????????? 33| A1 C/D
???? VCC |9?????????? 32| /RD
?/W_RDYA |10?? Z8442? 31| GND
? /SYNCA |11?? SIO-2? 30| /W_RDYB
??? RxDA |12????????? 29| RxDB
?? /RxCA |13????????? 28| /RxCB
?? /TxCA |14????????? 27| /TxCB
??? TxDA |15????????? 26| TxDB
?? /DTRA |16????????? 25| /DTRB
?? /RTSA |17????????? 24| /RTSB
?? /CTSA |18????????? 23| /CTSB
?? /DCDA |19????????? 22| /DCDB
???? CLK |20????????? 21| /RST
???????? +--------------+

SAA1064
I2C 4 digit common-anode LED driver.
I2C address is 01110xx where xx can be specified by the voltage on the ADR input (GND=00 3/8VCC=01 5/8VCC=10 VCC=11).
???? +---+--+---+
?ADR |1? +--+ 24| SCL
Cext |2?????? 23| SDA
?1Y8 |3?????? 22| 2Y8
?1Y7 |4?????? 21| 2Y7
?1Y6 |5?????? 20| 2Y6
?1Y5 |6?????? 19| 2Y5
?1Y4 |7? 1064 18| 2Y4
?1Y3 |8?????? 17| 2Y3
?1Y2 |9?????? 16| 2Y2
?1Y1 |10????? 15| 2Y1
?MX1 |11????? 14| MX2
?GND |12????? 13| VCC
???? +----------+

DS1202
Real-time clock with 3-wire serial interface and 24 bytes RAM.
??? +---+--+---+
??? |1? +--+? 8| VCC
?X1 |2?? DS?? 7| CLK
?X2 |3? 1202? 6| DQ
GND |4??????? 5| /RST
??? +----------+

DS1210
Nonvolatile SRAM controller chip.
TOL selects power-fail VCC level, based on 5% tolerance when 0 or 10% tolerance when 1.
????? +---+--+---+?????????? +---+----*---+
?VCCo |1? +--+? 8| VCC?????? |/EN|VCC |/Y |
VBAT1 |2?? DS?? 7| VBAT2???? +===+====*===+
? TOL |3? 1210? 6| /Y??????? | 1 | OK | 1 |
? GND |4??????? 5| /EN?????? | 0 | OK | 0 |
????? +----------+?????????? | X | LO | 1 |
???????????????????????????? +---+----*---+

DS1211
1-of-8 inverting decoder/nonvolatile SRAM controller chip.
TOL selects power-fail VCC level, based on 5% tolerance when 0 or 10% tolerance when 1. The Dallas Semi data book suggests this is actually a repackaged DS1212.
????? +---+--+---+?????????? +---+---+---+---+----*---+---+---+---+---+
VBAT1 |1? +--+ 20| VCC?????? |/EN| S2| S1| S0|VCC |/Y0|/Y1|...|/Y7|/PF|
?VCCo |2?????? 19| VBAT2???? +===+===+===+===+====*===+===+===+===+===+
? TOL |3?????? 18| /EN?????? | X | X | X | X | LO | 1 | 1 | 1 | 1 | 0 |
? /PF |4?????? 17| /Y0?????? | 1 | 0 | 0 | 0 | OK | 0 | 1 | 1 | 1 | 1 |
? /Y7 |5?? DS? 16| /Y1?????? | 0 | 0 | 0 | 1 | OK | 1 | 0 | 1 | 1 | 1 |
? /Y6 |6? 1211 15| /Y2?????? | 0 | . | . | . | OK | 1 | 1 | . | 1 | 1 |
?? S2 |7?????? 14| /Y3?????? | 0 | 1 | 1 | 1 | OK | 1 | 1 | 1 | 0 | 1 |
?? S1 |8?????? 13|?????????? +---+---+---+---+----*---+---+---+---+---+
?? S0 |9?????? 12| /Y4
? GND |10????? 11| /Y5
????? +----------+

DS1212
1-of-16 inverting decoder/nonvolatile SRAM controller chip.
TOL selects power-fail VCC level, based on 5% tolerance when 0 or 10% tolerance when 1.
????? +-----+--+-----+??????? +---+---+---+---+---+----*---+---+---+----+---+
VBAT1 |1??? +--+?? 28| VCC??? |/EN| S3| S2| S1| S0|VCC |/Y0|/Y1|...|/Y15|/PF|
?VCCo |2?????????? 27| VBAT2? +===+===+===+===+===+====*===+===+===+====+===+
? TOL |3?????????? 26| /EN??? | X | X | X | X | X | LO | 1 | 1 | 1 | 1? | 0 |
? /PF |4?????????? 25| /Y0??? | 1 | 0 | 0 | 0 | 0 | OK | 0 | 1 | 1 | 1? | 1 |
?/Y15 |5?????????? 24| /Y1??? | 0 | 0 | 0 | 0 | 1 | OK | 1 | 0 | 1 | 1? | 1 |
?/Y14 |6?????????? 23| /Y2??? | 0 | . | . | . | . | OK | 1 | 1 | . | 1? | 1 |
?/Y13 |7???? DS??? 22| /Y3??? | 0 | 1 | 1 | 1 | 1 | OK | 1 | 1 | 1 | 0? | 1 |
?/Y12 |8??? 1212?? 21| /Y4??? +---+---+---+---+---+----*---+---+---+----+---+
?/Y11 |9?????????? 20| /Y5
?? S3 |10????????? 19| /Y6
?? S2 |11????????? 18| /Y7
?? S1 |12????????? 17| /Y8
?? S0 |13????????? 16| /Y9
? GND |14????????? 15| /Y10
????? +--------------+

DS1285, DS1287, DS1287A
Real-time clock with 50 bytes RAM.
DS1287(A) has built-in quartz crystal and lihium battery, and therefore the X1, X2 and VBAT pins are no-connect. On the (older) DS1287 the /RCLR pin is no-connect as well.
??? +-----+--+-----+
MOT |1??? +--+?? 24| VCC
?X1 |2?????????? 23| SQW
?X2 |3?????????? 22|
AD0 |4?????????? 21| /RCLR
AD1 |5?????????? 20| VBAT
AD2 |6?? DS1285? 19| /INT
AD3 |7?????????? 18| /RST
AD4 |8?????????? 17| DS
AD5 |9?????????? 16| GND
AD6 |10????????? 15| R//W
AD7 |11????????? 14| AS
GND |12????????? 13| /CE
??? +--------------+

Z16C30
Dual universal serial controller.
PLCC68
+---------------+---------------+---------------+---------------+
| 10 /RxACKA??? | 27 /TxREQA??? | 44 /RxREQB??? | 61 /TxACKB??? |
| 11 /INTA????? | 28 /RxCA????? | 45 VCC??????? | 62 /PITACK??? |
| 12 IEIA?????? | 29 RxDA?????? | 46 GND??????? | 63 R//W?????? |
| 13 IEOA?????? | 30 /DCDA????? | 47 AD15?????? | 64 /WR??????? |
| 14 GND??????? | 31 /TxCA????? | 48 AD14?????? | 65 /RD??????? |
| 15 VCC??????? | 32 TxDA?????? | 49 AD13?????? | 66 /DS??????? |
| 16 AD0??????? | 33 /CTSA????? | 50 AD12?????? | 67 /AS??????? |
| 17 AD1??????? | 34 GND??????? | 51 AD11?????? | 68 VCC??????? |
| 18 AD2??????? | 35 GND??????? | 52 AD10?????? |? 1 VCC??????? |
| 19 AD3??????? | 36 GND??????? | 53 AD9??????? |? 2 VCC??????? |
| 20 AD4??????? | 37 /CTSB????? | 54 AD8??????? |? 3 /RST?????? |
| 21 AD5??????? | 38 TxDB?????? | 55 VCC??????? |? 4 /CE??????? |
| 22 AD6??????? | 39 /TxCB????? | 56 GND??????? |? 5 D//C?????? |
| 23 AD7??????? | 40 /DCDB????? | 57 IEOB?????? |? 6 A//B?????? |
| 24 GND??????? | 41 RxDB?????? | 58 IEIB?????? |? 7 /SITACK??? |
| 25 VCC??????? | 42 /RxCB????? | 59 /INTB????? |? 8 /WAIT//RDY |
| 26 /RxREQA??? | 43 /TxREQB??? | 60 /RxACKB??? |? 9 /TxACKA??? |
+---------------+---------------+---------------+---------------+

Z16C33
Mono universal serial controller with ISDN time slot assigner.
PLCC68
+---------------+---------------+---------------+---------------+
| 10 /RxACK???? | 27 /TxREQ???? | 44 PORT7????? | 61??????????? |
| 11 /INT?????? | 28 /RxC?????? | 45 VCC??????? | 62 /PITACK??? |
| 12 IEI??????? | 29 RxD??????? | 46 GND??????? | 63 R//W?????? |
| 13 IEO??????? | 30 /DCD?????? | 47 AD15?????? | 64 /WR??????? |
| 14 GND??????? | 31 /TxC?????? | 48 AD14?????? | 65 /RD??????? |
| 15 VCC??????? | 32 TxD??????? | 49 AD13?????? | 66 /DS??????? |
| 16 AD0??????? | 33 /CTS?????? | 50 AD12?????? | 67 /AS??????? |
| 17 AD1??????? | 34 GND??????? | 51 AD11?????? | 68 VCC??????? |
| 18 AD2??????? | 35 GND??????? | 52 AD10?????? |? 1 VCC??????? |
| 19 AD3??????? | 36 GND??????? | 53 AD9??????? |? 2 VCC??????? |
| 20 AD4??????? | 37 PORT0????? | 54 AD8??????? |? 3 /RST?????? |
| 21 AD5??????? | 38 PORT1????? | 55 VCC??????? |? 4 /CE??????? |
| 22 AD6??????? | 39 PORT2????? | 56 GND??????? |? 5 D//C?????? |
| 23 AD7??????? | 40 PORT3????? | 57??????????? |? 6 PS???????? |
| 24 GND??????? | 41 PORT4????? | 58??????????? |? 7 /SITACK??? |
| 25 VCC??????? | 42 PORT5????? | 59??????????? |? 8 /WAIT//RDY |
| 26 /RxREQ???? | 43 PORT6????? | 60??????????? |? 9 /TxACK???? |
+---------------+---------------+---------------+---------------+

6520, 6821
6800 and 6502 families peripheral interface adapters.
????? +-----+--+-----+
? GND |1??? +--+?? 40| CA1
? PA0 |2?????????? 39| CA2
? PA1 |3?????????? 38| /IRQA
? PA2 |4?????????? 37| /IRQB
? PA3 |5?????????? 36| RS0
? PA4 |6?????????? 35| RS1
? PA5 |7?????????? 34| /RST
? PA6 |8?????????? 33| D0
? PA7 |9?????????? 32| D1
? PB0 |10? MC6821? 31| D2
? PB1 |11?? 6520?? 30| D3
? PB2 |12????????? 29| D4
? PB3 |13????????? 28| D5
? PB4 |14????????? 27| D6
? PB5 |15????????? 26| D7
? PB6 |16????????? 25| E (P2)
? PB7 |17????????? 24| CE1
? CB1 |18????????? 23| /CE2
? CB2 |19????????? 22| CE0
? VCC |20????????? 21| R//W
????? +--------------+

6530
6502 family versatile interface adapter.
???????? +-----+--+-----+
???? GND |1??? +--+?? 40| PA1
???? PA0 |2?????????? 39| PA2
? E (P2) |3?????????? 38| PA3
????? RS |4?????????? 37| PA4
????? A9 |5?????????? 36| PA5
????? A8 |6?????????? 35| PA6
????? A7 |7?????????? 34| PA7
????? A6 |8?????????? 33| DB0
???? R/W |9?????????? 32| DB1
????? A5 |10?? 6530?? 31| DB2
????? A4 |11????????? 30| DB3
????? A3 |12????????? 29| DB4
????? A2 |13????????? 28| DB5
????? A1 |14????????? 27| DB6
????? A0 |15????????? 26| DB7
??? /RST |16????????? 25| PB0
/IRQ PB7 |17????????? 24| PB1
?CS1 PB6 |18????????? 23| PB2
?CS2 PB5 |19????????? 22| PB3
???? VCC |20????????? 21| PB4
???????? +--------------+

6551
6502 family asynchronous serial interface controller.
???? +-----+--+-----+
?GND |1??? +--+?? 28| R//W
?CE0 |2?????????? 27| CLK
/CE1 |3?????????? 26| /IRQ
/RST |4?????????? 25| D7
?RxC |5?????????? 24| D6
? X1 |6?????????? 23| D5
? X0 |7??? 6551?? 22| D4
/RTS |8?????????? 21| D3
/CTS |9?????????? 20| D2
?TxD |10????????? 19| D1
/DTR |11????????? 18| D0
?RxD |12????????? 17| /DSR
?RS0 |13????????? 16| /DCD
?RS1 |14????????? 15| VCC
???? +--------------+

6818
Real-time clock with 50 bytes RAM.
??? +-----+--+-----+
??? |1??? +--+?? 24| VCC
?X1 |2?????????? 23| SQW
?X2 |3?????????? 22|
AD0 |4?????????? 21| /RCLR
AD1 |5?????????? 20| VBAT
AD2 |6?? 146818? 19| /INT
AD3 |7?????????? 18| /RST
AD4 |8?????????? 17| DS
AD5 |9?????????? 16| GND
AD6 |10????????? 15| R//W
AD7 |11????????? 14| AS
GND |12????????? 13| /CE
??? +--------------+

6845
6800 family CRT Controller.
?????? +-----+--+-----+
?? GND |1??? +--+?? 40| VSYNC
? /RST |2?????????? 39| HSYNC
?LPSTB |3?????????? 38| RA0
?? MA0 |4?????????? 37| RA1
?? MA1 |5?????????? 36| RA2
?? MA2 |6?????????? 35| RA3
?? MA3 |7?????????? 34| RA4
?? MA4 |8?????????? 33| D0
?? MA5 |9?????????? 32| D1
?? MA6 |10?? 6845?? 31| D2
?? MA7 |11?? CRTC?? 30| D3
?? MA8 |12????????? 29| D4
?? MA9 |13????????? 28| D5
? MA10 |14????????? 27| D6
? MA11 |15????????? 26| D7
? MA12 |16????????? 25| /CE
? MA13 |17????????? 24| A0
DISPEN |18????????? 23| IORQ
CURSOR |19????????? 22| R/W
?? VCC |20????????? 21| CLK
?????? +--------------+

6850
6800 family asynchronous communications interface.
????? +-----+--+-----+
? GND |1??? +--+?? 24| /CTS
? RxD |2?????????? 23| /DCD
RxCLK |3?????????? 22| D0
TxCLK |4?????????? 21| D1
?/RTS |5?????????? 20| D2
? TxD |6?????????? 19| D3
?/IRQ |7??? 6850?? 18| D4
? CE0 |8?????????? 17| D5
?/CE2 |9?????????? 16| D6
? CE1 |10????????? 15| D7
?? RS |11????????? 14| E
? VCC |12????????? 13| R//W
????? +--------------+

6852
6800 family synchronous serial data adapter.
??????? +-----+--+-----+
??? GND |1??? +--+?? 24| /CTS
??? RxD |2?????????? 23| /DCD
? RxCLK |3?????????? 22| D0
? TxCLK |4?????????? 21| D1
SM /DTR |5?????????? 20| D2
??? TxD |6?????????? 19| D3
?? /IRQ |7??? 6852?? 18| D4
??? TUF |8?????????? 17| D5
?? /RST |9?????????? 16| D6
??? /CE |10????????? 15| D7
???? RS |11????????? 14| E
??? VCC |12????????? 13| R//W
??????? +--------------+

8243
8048 Port expander.
???? +-----+--+-----+
P5.0 |1??? +--+?? 24| VCC
P4.0 |2?????????? 23| P5.1
P4.1 |3?????????? 22| P5.2
P4.2 |4?????????? 21| P5.3
P4.3 |5?????????? 20| P6.0
?/CE |6?????????? 19| P6.1
PROG |7??? 8243?? 18| P6.2
P2.3 |8?????????? 17| P6.3
P2.2 |9?????????? 16| P7.3
P2.1 |10????????? 15| P7.2
P2.0 |11????????? 14| P7.1
?GND |12????????? 13| P7.0
???? +--------------+

8250
Asynchronous serial interface controller.
??????? +-----+--+-----+
???? D0 |1??? +--+?? 40| VCC
???? D1 |2?????????? 39| /RI
???? D2 |3?????????? 38| /DCD
???? D3 |4?????????? 37| /DSR
???? D4 |5?????????? 36| /CTS
???? D5 |6?????????? 35| MR
???? D6 |7?????????? 34| /OUT1
???? D7 |8?????????? 33| /DTR
?? RCLK |9?????????? 32| /RTS
??? RxD |10? 16450?? 31| /OUT2
??? TxD |11?? 8250?? 30| INTR
??? CE0 |12????????? 29|
??? CE1 |13????????? 28| A0
?? /CE2 |14????????? 27| A1
/CLKOUT |15????????? 26| A2
???? X1 |16????????? 25| /ADS
???? X0 |17????????? 24| CSOUT
??? /WR |18????????? 23| DDIS
???? WR |19????????? 22| RD
??? GND |20????????? 21| /RD
??????? +--------------+

8251
Universal asynchronous receiver/transmitter.
????? +-----+--+-----+
?? D2 |1??? +--+?? 28| D1
?? D3 |2?????????? 27| D0
? RxD |3?????????? 26| VCC
? GND |4?????????? 25| /RxC
?? D4 |5?????????? 24| /DTR
?? D5 |6?????????? 23| /RTS
?? D6 |7??? 8251?? 22| /DSR
?? D7 |8?????????? 21| RST
?/TxC |9?????????? 20| CLK
? /WR |10????????? 19| TxD
? /CE |11????????? 18| TxEMPTY
?C//D |12????????? 17| /CTS
? /RD |13????????? 16| SYCDET BD
RxRDY |14????????? 15| TXRDY
????? +--------------+

8253, 8254
Programmable interval timer/counter.
???? +-----+--+-----+
? D7 |1??? +--+?? 24| VCC
? D6 |2?????????? 23| /WR
? D5 |3?????????? 22| /RD
? D4 |4?????????? 21| /CE
? D3 |5?????????? 20| A1
? D2 |6??? 8253?? 19| A0
? D1 |7??? 8254?? 18| CLK2
? D0 |8?????????? 17| OUT2
CLK0 |9?????????? 16| G2
OUT0 |10????????? 15| CLK1
? G0 |11????????? 14| G1
?GND |12????????? 13| OUT1
???? +--------------+

8255
Parallel Peripheral Interface.
??? +-----+--+-----+
PA3 |1??? +--+?? 40| PA4
PA2 |2?????????? 39| PA5
PA1 |3?????????? 38| PA6
PA0 |4?????????? 37| PA7
/RD |5?????????? 36| /WR
/CE |6?????????? 35| RST
GND |7?????????? 34| D0
?A1 |8?????????? 33| D1
?A0 |9?????????? 32| D2
PC7 |10?? 8255?? 31| D3
PC6 |11????????? 30| D4
PC5 |12????????? 29| D5
PC4 |13????????? 28| D6
PC0 |14????????? 27| D7
PC1 |15????????? 26| VCC
PC2 |16????????? 25| PB7
PC3 |17????????? 24| PB6
PB0 |18????????? 23| PB5
PB1 |19????????? 22| PB4
PB2 |20????????? 21| PB3
??? +--------------+

Z8530, Z8531
Zilog Serial Communications Controller.
Z8531 has no synchronous capabilities.
????????? +-----+--+-----+
?????? D1 |1??? +--+?? 40| D0
?????? D3 |2?????????? 39| D2
?????? D5 |3?????????? 38| D4
?????? D7 |4?????????? 37| D6
???? /INT |5?????????? 36| /RD
????? IEO |6?????????? 35| /WR
????? IEI |7?????????? 34| A0 A/B
?? /INTAK |8?????????? 33| /CE
????? VCC |9?????????? 32| A1 D/C
? /W_REQA |10?? Z8530? 31| GND
?? /SYNCA |11??? SCC?? 30| /W_REQB
?? /RTxCA |12????????? 29| /SYNCB
???? RxDA |13????????? 28| /RTxCB
?? /TRxCA |14????????? 27| RxDB
???? TxDA |15????????? 26| /TRxCB
/DTR_REQA |16????????? 25| TxDB
??? /RTSA |17????????? 24| /DTR_REQB
??? /CTSA |18????????? 23| /RTSB
??? /DCDA |19????????? 22| /CTSB
????? CLK |20????????? 21| /DCDB
????????? +--------------+

8574, 8574A
I2C parallel I/O expander.
I2C address is 0100xxx for the 8574 and 0111xxx for the 8574A, where xxx can be specified by the A0-2 inputs.
??? +---+--+---+
?A0 |1? +--+ 16| VCC
?A1 |2?????? 15| SDA
?A2 |3?????? 14| SCL
?P0 |4?????? 13| /INT
?P1 |5? 8574 12| P7
?P2 |6?????? 11| P6
?P3 |7?????? 10| P5
GND |8??????? 9| P4
??? +----------+

8584
I2C bus controller.
Bus controller ties to either Z80-style bus or to 68000-style bus, and determines the mode from the first few cycles.
?????????? +---+--+---+
?????? CLK |1? +--+ 20| VCC
SDAo?? SDA |2?????? 19| /RST /STB
SCLo?? SCL |3?????? 18| /WR? R//W
SDAi /IACK |4?????? 17| /CS
SCLi? /INT |5?????? 16| /RD? /DTACK
??????? A0 |6? 8584 15| D7
??????? D0 |7?????? 14| D6
??????? D1 |8?????? 13| D5
??????? D2 |9?????? 12| D4
?????? GND |10????? 11| D3
?????????? +----------+

16450
Asynchronous serial interface controller.
??????? +-----+--+-----+
???? D0 |1??? +--+?? 40| VCC
???? D1 |2?????????? 39| /RI
???? D2 |3?????????? 38| /DCD
???? D3 |4?????????? 37| /DSR
???? D4 |5?????????? 36| /CTS
???? D5 |6?????????? 35| MR
???? D6 |7?????????? 34| /OUT1
???? D7 |8?????????? 33| /DTR
?? RCLK |9?????????? 32| /RTS
??? RxD |10? 16450?? 31| /OUT2
??? TxD |11?? 8250?? 30| INTR
??? CE0 |12????????? 29|
??? CE1 |13????????? 28| A0
?? /CE2 |14????????? 27| A1
/CLKOUT |15????????? 26| A2
???? X1 |16????????? 25| /ADS
???? X0 |17????????? 24| CSOUT
??? /WR |18????????? 23| DDIS
???? WR |19????????? 22| RD
??? GND |20????????? 21| /RD
??????? +--------------+

16550
Asynchronous serial interface controller with DMA support and 16-byte FIFOs.
??????? +-----+--+-----+
???? D0 |1??? +--+?? 40| VCC
???? D1 |2?????????? 39| /RI
???? D2 |3?????????? 38| /DCD
???? D3 |4?????????? 37| /DSR
???? D4 |5?????????? 36| /CTS
???? D5 |6?????????? 35| MR
???? D6 |7?????????? 34| /OUT1
???? D7 |8?????????? 33| /DTR
?? RCLK |9?????????? 32| /RTS
??? RxD |10? 16550?? 31| /OUT2
??? TxD |11????????? 30| INTR
??? CE0 |12????????? 29| /RXRDY
??? CE1 |13????????? 28| A0
?? /CE2 |14????????? 27| A1
/CLKOUT |15????????? 26| A2
???? X1 |16????????? 25| /ADS
???? X0 |17????????? 24| /TXRDY
??? /WR |18????????? 23| DDIS
???? WR |19????????? 22| RD
??? GND |20????????? 21| /RD
??????? +--------------+

16552
Dual asynchronous serial interface controller with DMA support and 16-byte FIFOs, and an 8-bit parallel printer port.
PLCC68
+---------------+---------------+---------------+---------------+
| 10 2TxD?????? | 27 GND??????? | 44 1BD??????? | 61 /2RXRDY??? |
| 11 /2DTR????? | 28 /1CTS????? | 45 1INT?????? | 62 2RxD?????? |
| 12 /2RTS????? | 29 /1DCD????? | 46 PD7??????? | 63 /ERR?????? |
| 13 /2CTS????? | 30 /1RI?????? | 47 PD6??????? | 64 VCC??????? |
| 14 D0???????? | 31 /1DSR????? | 48 PD5??????? | 65 SLCT?????? |
| 15 D1???????? | 32 /1CE?????? | 49 PD4??????? | 66 BUSY?????? |
| 16 D2???????? | 33 A2???????? | 50 PD3??????? | 67 PE???????? |
| 17 D3???????? | 34 A1???????? | 51 PD2??????? | 68 /ACK?????? |
| 18 D4???????? | 35 A0???????? | 52 PD1??????? |? 1 PEMD?????? |
| 19 D5???????? | 36 /WR??????? | 53 PD0??????? |? 2 2TR??????? |
| 20 D6???????? | 37 /RD??????? | 54 GND??????? |? 3 /2CE?????? |
| 21 D7???????? | 38 /PCE?????? | 55 /STB?????? |? 4 CLK??????? |
| 22 /1TXRDY??? | 39 /RST?????? | 56 /AFD?????? |? 5 /2DSR????? |
| 23 VCC??????? | 40 VCC??????? | 57 /INIT????? |? 6 /2RI?????? |
| 24 /1RTS????? | 41 1RxD?????? | 58 /SLIN????? |? 7 GND??????? |
| 25 /1DTR????? | 42 /2TXRDY??? | 59 PINT?????? |? 8 /2DCD????? |
| 26 1TxD?????? | 43 /ENIRQ???? | 60 2INT?????? |? 9 /1RXRDY??? |
+---------------+---------------+---------------+---------------+

16554
Quad asynchronous serial interface controller with DMA support and 16-byte FIFOs.
PLCC68
+---------------+---------------+---------------+---------------+
| 10 /1DSR????? | 27 /2DCD????? | 44 /3DSR????? | 61 /4DCD????? |
| 11 /1CTS????? | 28 /2RI?????? | 45 /3CTS????? | 62 /4RI?????? |
| 12 /1DTR????? | 29 2RxD?????? | 46 /3DTR????? | 63 4RxD?????? |
| 13 VCC??????? | 30 VCC??????? | 47 VCC??????? | 64 VCC??????? |
| 14 /1RTS????? | 31??????????? | 48 /3RTS????? | 65 /INTN????? |
| 15 1INT?????? | 32 A2???????? | 49 3INT?????? | 66 D0???????? |
| 16 /1CE?????? | 33 A1???????? | 50 /3CE?????? | 67 D1???????? |
| 17 1TxD?????? | 34 A0???????? | 51 3TxD?????? | 68 D2???????? |
| 18 /WR??????? | 35 X1???????? | 52 /RD??????? |? 1 D3???????? |
| 19 2TxD?????? | 36 X2???????? | 53 4TxD?????? |? 2 D4???????? |
| 20 /2CE?????? | 37 RST??????? | 54 /4CE?????? |? 3 D5???????? |
| 21 2INT?????? | 38 /RXRDY???? | 55 4INT?????? |? 4 D6???????? |
| 22 /2RTS????? | 39 /TXRDY???? | 56 /4RTS????? |? 5 D7???????? |
| 23 GND??????? | 40 GND??????? | 57 GND??????? |? 6 GND??????? |
| 24 /2DTR????? | 41 3RxD?????? | 58 /4DTR????? |? 7 1RxD?????? |
| 25 /2CTS????? | 42 /3RI?????? | 59 /4CTS????? |? 8 /1RI?????? |
| 26 /2DSR????? | 43 /3DCD????? | 60 /4DSR????? |? 9 /1DCD????? |
+---------------+---------------+---------------+---------------+

68153
680x0 family bus interrupter.
?????? +-----+--+-----+
?? VCC |1??? +--+?? 40| A3
? R//W |2?????????? 39| A2
?? /CE |3?????????? 38| A1
/DTACK |4?????????? 37| D7
?/IACK |5?????????? 36| D6
/IACKi |6?????????? 35| D5
/IACKo |7?????????? 34| D4
?/IRQ1 |8?????????? 33| D3
?? GND |9?????????? 32| D2
?? GND |10????????? 31| GND
?? VCC |11? 68153?? 30| VCC
?/IRQ2 |12????????? 29| D1
?/IRQ3 |13????????? 28| D0
?/IRQ4 |14????????? 27| /INTAE
?/IRQ5 |15????????? 26| INTAL1
?/IRQ6 |16????????? 25| INTAL0
?/IRQ7 |17????????? 24| /INT3
?? CLK |18????????? 23| /INT2
?/INT0 |19????????? 22| /INT1
?? GND |20????????? 21| VCC
?????? +--------------+

68230 (PLCC)
680x0 family Parallel Interface and Timer (PI/T)
PLCC52
+---------------+---------------+---------------+---------------+
|? 8??????????? | 21??????????? | 34 PC0??????? | 47 R//W?????? |
|? 9 PA4??????? | 22 PB2??????? | 35 PC1??????? | 48 D0???????? |
| 10 PA5??????? | 23 PB3??????? | 36 PC2 TIN??? | 49 D1???????? |
| 11 PA6??????? | 24 PB4??????? | 37 PC3 TOUT?? | 50 D2???????? |
| 12 PA7??????? | 25 PB5??????? | 38 PC4 /DMARQ | 51 D3???????? |
| 13 VCC??????? | 26 PB6??????? | 39 PC5 /PIRQ? | 52 D4???????? |
| 14 H1???????? | 27 PB7??????? | 40 PC6 /PIACK |? 1 D5???????? |
| 15 H2???????? | 28 A4???????? | 41 PC7 /TIACK |? 2 D6???????? |
| 16 H3???????? | 29 A3???????? | 42 GND??????? |? 3 D7???????? |
| 17 H4???????? | 30 A2???????? | 43 /RST?????? |? 4 PA0??????? |
| 18 PB0??????? | 31 A1???????? | 44 CLK??????? |? 5 PA1??????? |
| 19 PB1??????? | 32 A0???????? | 45 /CE??????? |? 6 PA2??????? |
| 20??????????? | 33??????????? | 46 /DTACK???? |? 7 PA3??????? |
+---------------+---------------+---------------+---------------+

68230 (DIP)
680x0 family Parallel Interface and Timer (PI/T)
??? +-----+--+-----+
?D5 |1??? +--+?? 48| D4
?D6 |2?????????? 47| D3
?D7 |3?????????? 46| D2
PA0 |4?????????? 45| D1
PA1 |5?????????? 44| D0
PA2 |6?????????? 43| R//W
PA3 |7?????????? 42| /DTACK
PA4 |8?????????? 41| /CE
PA5 |9?????????? 40| CLK
PA6 |10????????? 39| /RST
PA7 |11????????? 38| GND
VCC |12????????? 37| PC7 /TIACK
?H1 |13? 68230?? 36| PC6 /PIACK
?H2 |14????????? 35| PC5 /PIRQ
?H3 |15????????? 34| PC4 /DMAREQ
?H4 |16????????? 33| PC3 TOUT
PB0 |17????????? 32| PC2 TIN
PB1 |18????????? 31| PC1
PB2 |19????????? 30| PC0
PB3 |20????????? 29| RS0
PB4 |21????????? 28| RS1
PB5 |22????????? 27| RS2
PB6 |23????????? 26| RS3
PB7 |24????????? 25| RS4
??? +--------------+

68452
680x0 family bus arbiter.
?????? +-----+--+-----+
?? VCC |1??? +--+?? 28| GND
?? VCC |2?????????? 27| /BCLR
? /GT4 |3?????????? 26| /GT0
?/REQ3 |4?????????? 25| /REQ4
? /GT5 |5?????????? 24| /GT1
?/REQ2 |6?????????? 23| /REQ5
?/REQ1 |7?????????? 22| /REQ6
?? GND |8?? 68452?? 21| /REQ7
?/REQ0 |9?????????? 20| /BG
? /LEI |10????????? 19| /BR
/BGACK |11????????? 18| /GT2
? /GT7 |12????????? 17| /GT3
? /GT6 |13????????? 16| VCC
?? GND |14????????? 15| VCC
?????? +--------------+

68901 (DIP)
680x0 multi-function peripheral.
???? +-----+--+-----+
R//W |1??? +--+?? 48| /CE
?RS0 |2?????????? 47| /DS
?RS1 |3?????????? 46| /DTACK
?RS2 |4?????????? 45| /IACK
?RS3 |5?????????? 44| D7
?RS4 |6?????????? 43| D6
? TC |7?????????? 42| D5
? SO |8?????????? 41| D4
? SI |9?????????? 40| D3
? RC |10????????? 39| D2
?VCC |11????????? 38| D1
???? |12????????? 37| D0
?TAO |13? 68901?? 36| GND
?TBO |14????????? 35| CLK
?TCO |15????????? 34| /IEI
?TDO |16????????? 33| /IEO
? X1 |17????????? 32| /IRQ
? X0 |18????????? 31| /RR
?TAI |19????????? 30| /TR
?TBI |20????????? 29| INT7
/RST |21????????? 28| INT6
INT0 |22????????? 27| INT5
INT1 |23????????? 26| INT4
INT2 |24????????? 25| INT3
???? +--------------+

68901 (PLCC)
680x0 multi-function peripheral.
PLCC52
+---------------+---------------+---------------+---------------+
|? 8 TC???????? | 21??????????? | 34 /TR??????? | 47 D6???????? |
|? 9 SO???????? | 22 TAI??????? | 35 /RR??????? | 48 D7???????? |
| 10 SI???????? | 23 TBI??????? | 36 /IRQ?????? | 49 /IACK????? |
| 11 RC???????? | 24 /RST?????? | 37 /IEO?????? | 50 /DTACK???? |
| 12 VCC??????? | 25 INT0?????? | 38 /IEI?????? | 51 /DS??????? |
| 13??????????? | 26 INT1?????? | 39 CLK??????? | 52 /CE??????? |
| 14??????????? | 27 INT2?????? | 40 GND??????? |? 1??????????? |
| 15 TAO??????? | 28 INT3?????? | 41 D0???????? |? 2 R//W?????? |
| 16 TBO??????? | 29 INT4?????? | 42 D1???????? |? 3 RS0??????? |
| 17 TCO??????? | 30 INT5?????? | 43 D2???????? |? 4 RS1??????? |
| 18 TDO??????? | 31 INT6?????? | 44 D3???????? |? 5 RS2??????? |
| 19 X1???????? | 32 INT7?????? | 45 D4???????? |? 6 RS3??????? |
| 20 X0???????? | 33??????????? | 46 D5???????? |? 7 RS4??????? |
+---------------+---------------+---------------+---------------+

146818
Real-time clock with 50 bytes RAM.
??? +-----+--+-----+
??? |1??? +--+?? 24| VCC
?X1 |2?????????? 23| SQW
?X2 |3?????????? 22|
AD0 |4?????????? 21| /RCLR
AD1 |5?????????? 20| VBAT
AD2 |6?? 146818? 19| /INT
AD3 |7?????????? 18| /RST
AD4 |8?????????? 17| DS
AD5 |9?????????? 16| GND
AD6 |10????????? 15| R//W
AD7 |11????????? 14| AS
GND |12????????? 13| /CE
??? +--------------+