Key facts
- Brand
- Atmel
- Model
- AT25320A
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-06-05
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ATMEL AT25080A AT25160A AT25320A AT25640A DATA SHEET1
The document details the specifications for the Atmel AT25080A/160A/320A/640A family of electrically-erasable programmable read-only memory (EEPROM) devices. These components are organized as 8K, 16K, 32K, or 64K words of 8 bits each and are optimized for low-power and low-voltage operation in automotive applications.
The datasheet provides comprehensive technical information including absolute maximum ratings, DC and AC electrical characteristics, pin configurations, and a detailed description of the Serial Peripheral Interface (SPI) protocol. It covers operational modes such as read, write, status register access, and hardware/software protection mechanisms like Write Protect (WP) pins and block write protection.
Atmel AT25320A specifications
| Memory Capacity (AT25080A) | 8K words of 8 bits each |
|---|---|
| Memory Capacity (AT25320A) | 32K words of 8 bits each |
| Memory Capacity (AT25640A) | 64K words of 8 bits each |
| Operating Temperature Range | -40°C to +125°C |
| Maximum Clock Rate | 5.0 MHz |
| Supply Voltage Range | +2.7V to +5.5V |
| Endurance | One Million Write Cycles |
| Data Retention | 100 Years |
Source: ATMEL AT25080A AT25160A AT25320A AT25640A DATA SHEET1
All Atmel AT25320A documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What SPI modes does the device support?
The device supports SPI Modes 0 (0,0) and 3 (1,1), though this datasheet specifically describes Mode 0 operation.
What is the typical self-timed write cycle time?
The typical self-timed write cycle time is 2 ms when operating at 5V.
How many write cycles can the EEPROM endure?
The EEPROM can endure up to one million write cycles.
What is the maximum operating voltage for the AT25080A series?
The devices operate from 2.7 V up to 5.5 V.
From: Atmel AT25080A/AT25160A/AT25320A/AT25640A Serial EEPROM Datasheet
How many bits of memory does the AT25640A provide?
The AT25640A provides 65 536 bits (64 K‑bit) of EEPROM memory.
From: Atmel AT25080A/AT25160A/AT25320A/AT25640A Serial EEPROM Datasheet