This is a preliminary document about A29040B Series 512K x 8 Bit CMOS 5.0 Volt-only Uniform Sector Flash Memory. The product features include 5.0V voltage, 8 uniform sectors, erasing and programming capabilities, support for full chip erase, etc.
The A29040B is a 5.0 V‑only flash memory organized as 512 KB (524,288 bytes) of 8‑bit cells, divided into eight uniform 64 KB sectors. It offers fast access times, low power consumption, and a range of package options (32‑pin PLCC, TSOP, PDIP). The device is compatible with JEDEC single‑power‑supply flash standards and includes features such as sector protection, erase‑suspend/resume, and embedded program/erase algorithms.
The document details electrical characteristics, pin descriptions, bus operations, programming sequences, and protection mechanisms, along with mechanical dimensions for the supported packages. It also lists absolute maximum ratings and operating temperature ranges for both commercial and extended‑range versions.
| Memory Capacity | 512 KB (524,288 bytes) |
|---|---|
| Operating Voltage | 5.0 V (single‑supply) |
| Access Times | 55 ns, 70 ns, 90 ns (max) |
| Active Read Current | 20 mA typical |
| Program/Erase Current | 30 mA typical |
| Standby Current | 1 pA typical |
| Number of Sectors | 8 uniform sectors |
| Sector Size | 64 KB |
| Operating Temperature (Extended‑range) | -40 °C to +85 °C |
| Absolute Maximum Ambient Temperature | -55 °C to +125 °C |
| Typical Program/Erase Cycles | 100,000 per sector |
| Data Retention | 20 years at 125 °C |
| Package Options | 32‑pin PLCC, TSOP, PDIP |
It operates from a single 5.0 V supply for both read and write functions.
The device contains eight uniform sectors, each 64 KB in size.
The maximum access times are 55 ns, 70 ns, and 90 ns.
Typical active read current is 20 mA.