AT45DB021D is a 2.7V, serial-interface Flash memory ideally suited for a wide variety of digital voice-, image-, program code- and data-storage applications.
The AT45DB021D is a 2‑megabit serial‑interface Flash memory designed for low‑voltage, low‑power applications. It supports a RapidS serial interface up to 66 MHz and offers flexible page sizes of 256 bytes or 264 bytes.
The document provides full feature listings, pin configurations, memory architecture, read/write commands, erase options and electrical characteristics such as supply voltage range, current consumption and endurance specifications.
| Supply voltage | 2.7 V to 3.6 V |
|---|---|
| Maximum serial clock frequency | 66 MHz |
| Page size | 256 bytes or 264 bytes |
| Memory capacity | 2,162,688 bits (2 Mbit) |
| Number of pages | 1,024 pages |
| Erase options | Page (256 B), Block (2 KB), Sector (32 KB), Chip (2 Mbit) |
| Active read current | 7 mA typical |
| Standby current | 25 pA typical |
| Deep power‑down current | 15 pA typical |
| Program/erase endurance | ≥ 100,000 cycles per page |
| Data retention | 20 years |
It operates from a single power supply of 2.7 V to 3.6 V.
The RapidS serial interface can run up to 66 MHz.
The device contains 1,024 pages of 256 bytes or 264 bytes each.
Typical active read current is 7 mA, standby current is 25 pA, and deep power‑down current is 15 pA.