The W39L040 is a 4Mbit, 3.3-volt only 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, which are composed of 16 smaller even pages with 4 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 W39L040 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.
The W39L040 is a 4Mbit (512K x 8) CMOS Flash Memory designed for flexible erase capability, divided into eight uniform sectors of 64 Kbytes. The device operates on a single 3.3-volt supply and does not require a 12-volt VPP for programming or erasing.
| Memory Capacity | 4Mbit (512K x 8) |
|---|---|
| Operating Voltage | 3.3V only |
| Program Cycle Time (Typical) | 50 µs |
| Chip Erase Cycle Time | 100 ms (max.) |
| Data Retention | Twenty years |
No, it can be programmed and erased in-system with a standard 3.3V power supply.
The device is available in 32L PLCC, 32L TSOP (8 x 20 mm), and 32L STSOP (8 x 14 mm).