General Description

The A29L040A is a 3.0 volt-only Flash memory organized as 524,288 bytes of 8 bits each. The 512 Kbytes of data are further divided into eight sectors of 64 Kbytes each for flexible sector erase capability. The 8 bits of data appear on I/O0 - I/O7 while the addresses are input on A0 to A18. The A29L040A is offered in 32-pin PLCC, TSOP (8mm x 20mm) or sTSOP (8mm x 13.4mm) packages. This device is designed to be programmed in-system with the standard system 3.0 volt VCC supply. Additional 12.0 volt VPP is not required for in-system write or erase operations. However, the A29L040A can also be programmed in standard EPROM programmers.

Features

■ Single power supply operation

- Full voltage range: 2.7 to 3.6 volt read and write operations for battery-powered applications

- Regulated voltage range: 3.0 to 3.6 volt read and write operations for compatibility with high performance 3.3 volt microprocessors

■ Access times: - 70 (max.)

■ Current:

- 4 mA typical active read current

- 20 mA typical program/erase current

- 200 nA typical CMOS standby

- 200 nA Automatic Sleep Mode current

■ Flexible sector architecture

- 8 uniform sectors of 64 Kbyte each

- Any combination of sectors can be erased

- Supports full chip erase

- Sector protection: A hardware method of protecting sectors to prevent any inadvertent program or erase operations within that sector

■ Embedded Erase Algorithms

- Embedded Erase algorithm will automatically erase the entire chip or any combination of designated sectors and verify the erased sectors

- Embedded Program algorithm automatically writes and verifies bytes at specified addresses

■ Typical 100,000 program/erase cycles per sector

■ 20-year data retention at 125°C

- Reliable operation for the life of the system

■ Compatible with JEDEC-standards

- Pinout and software compatible with single-powersupply Flash memory standard

- Superior inadvertent write protection

■ Data Polling and toggle bits

- Provides a software method of detecting completion of program or erase operations

■ Erase Suspend/Erase Resume

- Suspends a sector erase operation to read data from, or program data to, a non-erasing sector, then resumes the erase operation

■ Package options

- 32-pin DIP, PLCC, TSOP (8mm x 20mm), sTSOP (8mm x 13.4mm), sTSOP (8mm x 14mm).