24AA256 32kx8 Microchip Serial EEPROM

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The 24AA256 is a 32K x 8 (256 Kbit) Serial Electrically Erasable PROM, capable of operation across a broad voltage range (1.7V to 5.5V). It has been developed for advanced, low-power applications such as personal communications or data acquisition. This device also has a page write capability of up to 64 bytes of data. This device is capable of both random and sequential reads up to the 256K boundary. Functional address lines allow up to eight devices on the same bus, for up to 2 Mbit address space. This device is available in the standard 8-pin plastic DIP, SOIC, TSSOP, MSOP, and DFN packages.

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24AA256 Pinout

24AA256 Pin Configuration

Pin No	Pin Name	Description
1	A0	User Configurable Chip Select
2	A1	User Configurable Chip Select
3	A2	User Configurable Chip Select
4	VSS	Ground Pin
5	SDA	Serial Data Pin
6	SCL	Serial Clock Pin
7	WP	Write Protect Pin
8	VCC	Power Supply Pin

24AA256 Key Feature

Single Supply with Operation Down to 1.7V for
- 24AA256 and 24FC256 Devices, 2.5V for 24LC256 Devices
Low-Power CMOS Technology:
Active current 400 uA, typical
Standby current 100 nA, typical
2-Wire Serial Interface, I2C™ Compatible
Cascadable up to Eight Devices
Schmitt Trigger Inputs for Noise Suppression
Output Slope Control to Eliminate Ground Bounce
100 kHz and 400 kHz Clock Compatibility
Page Write Time 5 ms max.
Self-Timed Erase/Write Cycle
64-Byte Page Write Buffer
Hardware Write-Protect
ESD Protection >4000V
More than 1 Million Erase/Write Cycles
Data Retention >200 years
Factory Programming Available
Packages Include 8-lead PDIP, SOIC, DFN, TSSOP and MSOP
Pb-Free and RoHS Compliant