Product Summary

The 25AA256-I/SN is a 256k-bit Serial Electrically Erasable PROM. The memory is accessed via a simple Serial Peripheral Interface (SPI) compatible serial bus. The bus signals required are a clock input (SCK) plus separate data in (SI) and data out (SO) lines. Access to the device is controlled through a Chip Select (CS) input. Communication to the device can be paused via the hold pin (HOLD). While the 25AA256-I/SN is paused, transitions on its inputs will be ignored, with the exception of Chip Select, allowing the host to service higher priority interrupts.

Parametrics

25AA256-I/SN absolute maximum ratings: (1)VCC: 6.5V; (2)All inputs and outputs w.r.t. VSS: -0.6V to VCC +1.0V; (3)Storage temperature: -65℃ to 150℃; (4)Ambient temperature under bias: -40℃ to 125℃; (5)ESD protection on all pins: 4 kV.

Features

25AA256-I/SN features: (1)Max. clock 10 MHz; (2)Low-power CMOS technology, Max. Write Current: 5 mA at 5.5V, 10 MHz; Read Current: 5 mA at 5.5V, 10 MHz; Standby Current: 1μA at 5.5V; (3)32,768 x 8-bit organization; (4)64 byte page; (5)Self-timed ERASE and WRITE cycles (5 ms max.); (6)Block write protection, Protect none, 1/4, 1/2 or all of array; (7)Built-in write protection, Power-on/off data protection circuitry; Write enable latch; Write-protect pin; (8)Sequential read; (9)High reliability, Endurance: 1,000,000 erase/write cycles; Data retention: > 200 years; ESD protection: > 4000V; (10)Temperature ranges supported; Industrial (I): -40℃ to +85℃; Automotive (E): -40℃ to +125℃; (11)Standard and Pb-free packages available.

Diagrams

25AA256-I/SN block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
25AA256-I/SN
25AA256-I/SN
Microchip Technology
EEPROM 32kx8 - 1.8V
Data Sheet
0-1: $0.84
1-10: $0.67
10-25: $0.65
25-100: $0.62
25AA256-I/SNG
25AA256-I/SNG
Microchip Technology
EEPROM 32kx8 - 1.8V Lead Free Package
Data Sheet
Negotiable