The IS25LQ016 （16M-bit） Serial Flash memory offers a storage solution with flexibility and performance in a simplified pin count package. ISSI’s “Industry Standard Serial Interface” is for systems that have limited space， pins， and power. The IS25LQ016 are accessed through a 4-wire SPI Interface consisting of a Serial Data Input （Sl）， Serial Data Output （SO）， Serial Clock （SCK）， and Chip Enable （CE#） pins， which also serve as multifunction I/O pins in Dual and Quad modes （see pin descriptions）。 The IS25xQ series of flash is ideal for code shadowing to RAM， execute in place （XIP） operations， and storing non-volatile data. The memory array is organized into programmable pages of 256-bytes each. The IS25LQ016 supports page program mode where 1 to 256 bytes of data can be programmed into the memory with one command. Pages can be erased in groups of 4K-byte sectors， 64K-byte blocks， and/or the entire chip. The uniform 4K-byte sectors and 64K-byte blocks allow greater flexibility for a variety of applications requiring solid data retention. The device supports the standard Serial Peripheral Interface （SPI）， Dual/Quad output （SPI）， and Dual/Quad I/O （SPI）。 Clock frequencies of up to 104MHz and 80MHz for Dual/Quad I/O modes allow for equivalent clock rates of up to 320MHz （80MHz x 4） allowing up to 40MB/S of throughput. These transfer rates can outperform 16-bit Parallel Flash memories allowing for efficient memory access for a XIP （execute in place） operation. The IS25LQ016 is manufactured using industry leading non-volatile memory technology. The devices are offered in industry standard lead-free packages. See Ordering Information for the density and package combinations available.