CONTENTS PAGE
INTRODUCTION? 1
I2C-Bus System? 1
I2C Hardware Characteristics 1
I2C Protocol Characteristics? 2
MCS-51 Hardware Requirements? 4
MCS-51 I2C Software Emulation
Modules? 5
CONTENTS PAGE
MCS-51 and I2C-Bus Compatible IC's
System Implementation? 6
I2C Software Emulation Performance? 7
CONCLUSION? 7
REFERENCES? 7
Did you know that you could implement I2C function-
ality using the Intel MCS-51 family of microcontrol-
lers? The I2C-bus allows the designer to implement in-
telligent application-oriented control circuits without
encountering numerous interfacing problems. This bus
simplicity is maintained by being structured for eco-
nomical, efficient and versatile serial communication.
Proven I2C applications are currently being implement-
ed in digital control/signal processing circuits for audio
and video systems, DTMF generators for telephones
with tone dialing and ACCESS.bus, a lower-cost alter-
native for the RS-232C interface used for connecting
peripherals to a host computer.