Key facts
- Brand
- Atmel
- Model
- AT25040A
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-03-27
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Atmel AT25010A/AT25020A/AT25040A Serial EEPROM Datasheet
The AT25010A/AT25020A/AT25040A series provides 1 Kb, 2 Kb, or 4 Kb of serial electrically‑erasable programmable read‑only memory (EEPROM) in 8‑lead SOIC and TSSOP packages. It operates over a wide voltage range (2.7 V‑5.5 V) and temperature range (‑40 °C to +125 °C), making it suitable for automotive and low‑power applications.
The device uses a standard SPI interface with Chip Select, Serial Data Input/Output, and Serial Clock pins. Features include self‑timed write cycles (max 10 ms), block write protection, and a high endurance of one million write cycles with 100‑year data retention.
Atmel AT25040A specifications
| Supply Voltage | 2.7 V – 5.5 V |
|---|---|
| Page Mode | 8‑byte |
| Data Retention | 100 years |
| Operating Temperature Range | ‑40 °C to +125 °C |
| Package Types | 8‑lead SOIC, 8‑lead TSSOP |
| Pin Capacitance (SO) | 8 pF |
| Pin Capacitance (CS, SCK, SI, WP, HOLD) | 6 pF |
Source: Atmel AT25010A/AT25020A/AT25040A Serial EEPROM Datasheet
All Atmel AT25040A documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the operating temperature range?
The device operates from –40 °C to +125 °C.
From: Atmel AT25010A/AT25020A/AT25040A Serial EEPROM Datasheet
What supply voltage range is supported?
The EEPROM works with a supply voltage between 2.7 V and 5.5 V.
From: Atmel AT25010A/AT25020A/AT25040A Serial EEPROM Datasheet
What is the maximum clock frequency for the AT25010A/AT25020A/AT25040A?
The device supports a maximum clock rate of 5.0 MHz.
From: Atmel AT25010A/AT25020A/AT25040A Serial EEPROM Datasheet
What supply voltage range does the EEPROM operate over?
It operates from 2.7 V to 5.5 V.
From: Atmel AT25010A/AT25020A/AT25040A Serial EEPROM Datasheet