The W39L512 is a 512Kbit, 3.3-volt only CMOS flash memory organized as 64K x 8 bits. For flexible erase capability, the 512Kbits of data are divided into 16 small even pages with 4 Kbytes. The bytewide (x 8) data appears on DQ7 - DQ0. The device can be programmed and erased in-system with a standard 3.3V power supply. A 12-volt VPP is not required. The unique cell architecture of the W39L512 results in fast program/erase operations with extremely low current consumption (compared to other comparable 3.3-volt flash memory products). The device can also be programmed and erased by using standard EPROM programmers.