W39L040A datasheet,pdf(32-pin PLCC Lead free, 32-pin STSOP 8 x 14 mmLead free, 32-pin PDIP and 32-pin TSOP8 x 20 mm )The W39L040A is a 4Mbit, 3V/3.3V CMOS flash memory organized as 512K 8 bits. For flexible erase capability, the 4Mbits of data are divided into 8 uniform sectors of 64 Kbytes. The byte-wide ( 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 W39L040A 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
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