AT25640B-CUL-T(2012) Просмотр технического описания (PDF) - Atmel Corporation

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AT25640B-CUL-T
(Rev.:2012)

SPI Serial EEPROM 32Kb (4096 x 8) and 64Kb (8192 x 8)

Atmel Corporation 

Atmel AT25320B and AT25640B

SPI Serial EEPROM

32Kb (4096 x 8) and 64Kb (8192 x 8)

Features

DATASHEET

 Serial Peripheral Interface (SPI) compatible

 Supports SPI Modes 0 (0,0) and 3 (1,1)

 Datasheet describes Mode 0 operation

 Low-voltage and standard-voltage operation

 1.8V (VCC = 1.8V to 5.5V)

 20MHz clock rate (5V)

 32-byte Page mode

 Block Write Protection

 Protect 1/4, 1/2, or entire array

 Write Protect (WP) pin and Write Disable instructions for both hardware and

software data protection

 Self-timed write cycle (5ms max)

 High reliability

 Endurance: 1,000,000 write cycles

 Data retention: 100 years

 Green (Pb/Halide-free/RoHS compliant) packaging options

 Die sales: wafer form, tape and reel, and bumped wafers

Description

The Atmel® AT25320B/640B provides 32768-/65536-bits of Serial Electrically-

erasable Programmable Read-Only Memory (EEPROM) organized as 4096/8192

words of eight bits each. The device is optimized for use in many industrial and

commercial applications where low-power and low-voltage operation are essential.

The AT25320B/640B is available in space-saving 8-lead JEDEC SOIC, 8-lead

TSSOP, 8-lead UDFN, 8-lead XDFN, and 8-ball VFBGA packages.

The AT25320B/640B is enabled through the Chip Select pin (CS) and accessed via a

3-wire interface consisting of Serial Data Input (SI), Serial Data Output (SO), and

Serial Clock (SCK). All programming cycles are completely self-timed, and no

separate erase cycle is required before Write.

8535G–SEEPROM–11/2012

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