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AT45DB021B from ATMEL

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AT45DB021B

Manufacturer: ATMEL

2M bit, 2.7-Volt Only Serial-Interface Flash with Two 264-Byte SRAM Buffers

Partnumber Manufacturer Quantity Availability
AT45DB021B ATMEL 934 In Stock

Description and Introduction

2M bit, 2.7-Volt Only Serial-Interface Flash with Two 264-Byte SRAM Buffers The AT45DB021B is a serial-interface Flash memory device manufactured by ATMEL (now part of Microchip Technology). Here are its key specifications:  

- **Memory Capacity**: 2 megabits (256 KB) organized as 1024 pages of 264 bytes each.  
- **Interface**: Serial Peripheral Interface (SPI) compatible.  
- **Voltage Range**: 2.7V to 3.6V.  
- **Operating Temperature**: -40°C to +85°C (industrial grade).  
- **Page Size**: 264 bytes (with an additional 8-byte buffer).  
- **Page Program Time**: 7 ms (typical).  
- **Block Erase Options**: 264-byte page, 128-page block, or full chip erase.  
- **Data Retention**: 20 years (minimum).  
- **Endurance**: 10,000 write cycles per page (minimum).  
- **Package Options**: 8-lead SOIC and 8-lead PDIP.  
- **Clock Frequency**: Up to 20 MHz (SPI Mode 0 and 3 supported).  

This information is based on the official datasheet from ATMEL/Microchip.

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