24LC256 32kx8 Microchip Serial EEPROM

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The 24LC256 is a 32K x 8 (256 Kbit) Serial Electrically Erasable PROM, capable of operation across a broad voltage range (1.8 V to 5.5 V). 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, DFN, and 14-lead TSSOP packages.

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24LC256 Pinout

24LC256 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

24LC256 Key Features

Single supply with operation down to 1.8V
Low-power CMOS technology:
- 1 mA active current, typical
- 1 uA standby current, typical (l-temp)
Organized as 4 blocks of 256 bytes (4 x 256 x8)
2-wire serial interface bus, 1cTM compatible
Schmitt Trigger inputs for noise suppression
Output slope control to eliminate ground bounce
100 KHz (<2.5V) and 400 kHz (22.5V) compatibility
Self-timed write cycle (including auto-erase)
Page write buffer for up to 16 bytes
2 ms typical write cycle time for page write
Hardware write-protect for entire memory
Can be operated as a serial ROM
Factory programming (QTP) available .
ESD protection> 4,000V
1,000,000 erase/write cycles