AT45DB021A Datasheet | Atmel

Features - - - - - - - - - - - - - - 100% patible to AT45D021 Single 2.7V - 3.6V Supply Serial Interface Architecture Page Program Operation - Single Cycle Reprogram (Erase and Program) - 1024 Pages (264 Bytes/Page) Main Memory Optional Page and Block Erase Operations Two 264-byte SRAM Data Buffers - Allows Receiving of Data while Reprogramming of Nonvolatile Memory Continuous Read Capability through Entire Array Internal Program and Control Timer Low Power Dissipation - 4 m A Active Read Current Typical - 2 µA CMOS Standby Current Typical 13 MHz Max Clock Frequency Hardware Data Protection Feature Serial Peripheral Interface (SPI) patible - Modes 0 and 3 CMOS and TTL patible Inputs and Outputs mercial and Industrial Temperature Ranges 2-megabit 2.7-volt Only Serial Data Flash® AT45DB021A Remend using AT45DB021B for new designs. Description The AT45DB021A is a 2.7-volt only, serial interface Flash memory suitable for in-system reprogramming. Its 2,162,688 bits of memory are organized as 1024 pages of 264 bytes each. In addition to the main memory, the AT45DB021A also contains two SRAM data buffers of 264 bytes each. The buffers allow receiving of data while a page in the main memory is being reprogrammed. Unlike conventional Flash .. (continued) Pin Configurations Pin Name CS SCK SI SO WP RESET RDY/BUSY Function Chip Select Serial Clock Serial Input Serial Output Hardware Page Write Protect Pin Chip Reset Ready/Busy PLCC CS NC NC GND VCC NC NC GND NC NC CS SCK SI SO NC NC NC NC NC NC NC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 RDY/BUSY RESET WP NC NC VCC GND NC NC NC CS SCK SI SO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 NC NC NC NC NC NC NC NC NC NC NC NC NC NC TSOP Top View Type 1 SOIC 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VCC NC NC WP RESET RDY/BUSY NC NC NC NC NC NC NC NC NC NC DC DC NC NC NC 14 15 16 17 18 19 20 SCK SI SO NC NC NC NC NC NC 5 6 7 8 9 10 11 12 13 4 3 2 1 32 31 30 29 28 27 26 25 24 23 22 21 WP RESET RDY/BUSY...