AT29C512 is a 5V-only in-system Flash programmable and erasable read-only memory (PEROM) with features like fast read access time, sector program operation, hardware and software data protection, etc.
The AT29C512 is a 5‑volt‑only, in‑system flash programmable read‑only memory offering 512 Kb of storage organized as 65,536 × 8 bits. It provides fast 70 ns read access, low active current (50 mA) and ultra‑low standby current (300 pA), making it suitable for industrial temperature ranges.
The device supports sector‑wise programming with 128‑byte sectors, data‑polling and toggle‑bit methods to detect the end of a program cycle, and optional software or hardware data‑protection features. Pin configurations, electrical characteristics, and packaging dimensions are detailed for design integration.
| Read Access Time | 70 ns |
|---|---|
| Standby Current | 300 pA |
| Active Current | 50 mA |
| Memory Size | 512 Kb (64K × 8) |
| Number of Sectors | 512 sectors (128 B each) |
| Endurance | >10,000 cycles |
| Operating Temperature Range | -40 °C to +85 °C |
The device operates with a 5‑volt supply and uses 5‑volt‑only commands for programming.
Each sector contains 128 bytes.
The device provides DATA polling and a toggle‑bit on the I/O pins to indicate when a program or erase cycle has completed.
The standby (CMOS) current is 300 pA.