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AT25128A

ATMEL Corporation
Part Number AT25128A
Manufacturer ATMEL Corporation
Description (AT25128A / AT25256A) SPI Serial EEPROMs
Published Apr 26, 2007
Detailed Description Features • • • • • • • • • • • • • Serial Peripheral Interface (SPI) Compatible Supports SPI Modes 0 (0,0) and 3 (1,1) D...
Datasheet PDF File AT25128A PDF File

AT25128A
AT25128A


Overview
Features • • • • • • • • • • • • • Serial Peripheral Interface (SPI) Compatible Supports SPI Modes 0 (0,0) and 3 (1,1) Data Sheet Describes Mode 0 Operation Low-voltage and Standard-voltage Operation – 2.
7 (VCC = 2.
7V to 5.
5V) – 1.
8 (VCC = 1.
8V to 5.
5V) 20 MHz Clock Rate (5V) 64-byte Page Mode and Byte Write Operation 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 (5 ms Max) High-reliability – Endurance: 1 Million Write Cycles – Data Retention: >100 Years Automotive Grade, Extended Temperature and Lead-free/Halogen-free Devices Available 8-lead PDIP, 8-lead EIAJ SOIC, 8-lead JEDEC SOIC, 8-lead TSSOP, 8-ball dBGA2 and 8-lead SAP Packages Die Sales: Wafer Form, Waffle Pack, and Bumped Die SPI Serial EEPROMs 128K (16,384 x 8) 256K (32,768 x 8) Description The AT25128A/256A provides 131,072/262,144 bits of serial electrically-erasable programmable read only memory (EEPROM) organized as 16,384/32,768 words of 8 bits each.
The device is optimized for use in many industrial and commercial applications where low-power and low-voltage operation are essential.
The devices are www.
DataSheet4U.
com available in space saving 8-lead PDIP, 8-lead EIAJ SOIC, 8-lead JEDEC SOIC, 8lead TSSOP, 8-ball dBGA2 and 8-lead SAP packages.
In addition, the entire family is available in 2.
7V (2.
7V to 5.
5V) and 1.
8V (1.
8V to 5.
5V) versions.
The AT25128A/256A 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.
8-lead PDIP 8-lead SOIC VCC HOLD SCK SI CS SO WP GND 1 2 3 4 8 7 6 5 VCC HOLD SCK SI AT25128A AT25256A Table 1.
Pin Configurations Pin Name CS SCK SI SO GND VCC WP HOLD NC Function Chip Select Serial Data Clock Serial Data Input Serial Data...



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