The AT29BV020 is a 2.7-volt-only in-system Flash Programmable and Erasable Read Only Memory (PEROM)
The AT29BV020 is a 2‑megabit, in‑system flash programmable and erasable read‑only memory (PEROM) that operates from a single 2.7 V to 3.6 V supply. It provides fast 250 ns read access, low power dissipation, and can endure more than 10 000 program cycles per sector.
The device supports software‑protected programming, hardware data protection, and optional boot‑block lockout for two 8 KB memory sections. It includes CMOS and TTL compatible I/O, a wide input voltage range, and operates across commercial and industrial temperature ranges.
| Supply Voltage Range | 2.7 V to 3.6 V |
|---|---|
| Active Current | 15 mA |
| Standby Current | 20 µA CMOS |
| Endurance | >10,000 cycles per sector |
| Memory Size | 2 Megabit (256K × 8) |
| Number of Sectors | 1024 |
| Sector Size | 256 bytes |
| Boot Block Size | 8 KB (two blocks) |
| Operating Temperature Range | -55 °C to +125 °C |
| Storage Temperature Range | -65 °C to +150 °C |
It operates from 2.7 V up to 3.6 V.
The device contains 1024 sectors, each 256 bytes long.
Programming requires a three‑command software data protection sequence before any sector can be programmed.