General Description

The A29L004A is a 4Mbit, 3.0 volt-only Flash memory organized as 524,288 bytes of 8 bits. The 8 bits of data appear on I/O0 - I/O7. The A29L004A is offered in 40-pin TSOP, 32-pin PLCC or (s)TSOP 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 A29L004A 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:

- 70/90 (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

- 16 Kbyte/ 8 KbyteX2/ 32 Kbyte/ 64 KbyteX7 sectors

- 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. Temporary Sector Unprotect feature allows code changes in previously locked sectors

● Unlock Bypass Program Command

- Reduces overall programming time when issuing multiple program command sequence

● Top or bottom boot block configurations available

● Embedded 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 data 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-power-supply Flash memory standard

- Superior inadvertent write protection

● Data Polling and toggle bits

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

● Ready / BUSY pin (RY / BY )

- Provides a hardware method of detecting completion of program or erase operations (not available on 32-pin PLCC & (s)TSOP packages)

● 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

● Hardware reset pin (RESET )

- Hardware method to reset the device to reading array data (not available on 32 pin PLCC & (s)TSOP packages)

● Package options

- 40-pin TSOP (forward type), 32-pin PLCC or (s)TSOP (forward type)