Key facts
- Brand
- Atmel
- Model
- AT93C56A
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-03-27
Start here
Atmel AT93C56A/AT93C66A Datasheet
The AT93C56A/AT93C66A are serial electrically‑erasable programmable read‑only memory (EEPROM) devices offering 2 Kb or 4 Kb of storage. They operate from 2.7 V to 5.5 V and support a three‑wire serial interface for read, write, and erase operations.
The datasheet provides absolute‑maximum ratings, electrical characteristics, pin configurations, timing diagrams, and mechanical dimensions for both 8‑lead SOIC and 8‑lead TSSOP packages. It also lists the instruction set used to control the device.
Atmel AT93C56A specifications
| Supply voltage | 2.7 V to 5.5 V |
|---|---|
| Organization | 2K: 256 × 8 or 128 × 16; 4K: 512 × 8 or 256 × 16 |
| Maximum clock rate | 2 MHz |
| Endurance | 1 Million write cycles |
| Data retention | 100 years |
| Operating temperature range | -40 °C to 125 °C |
| Pin capacitance (DO, CS, SK, DI) | 5 pF |
| Read current (1 MHz) | 2.0 mA |
All Atmel AT93C56A documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What voltage range does the AT93C56A/AT93C66A operate at?
The device operates from 2.7 V to 5.5 V.
How many write cycles can the EEPROM endure?
It can endure up to 1 million write cycles.
What temperature were the qualification tests performed at?
All qualification tests were conducted at 25 °C.
From: ATMEL AT93C56A/66A (AT3552m/2k) SPI EEPROM Product Qualification handbook
What is the maximum trigger current used in latch‑up testing?
The latch‑up tests used a maximum trigger current of 200 mA.
From: ATMEL AT93C56A/66A (AT3552m/2k) SPI EEPROM Product Qualification handbook