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AT25256A Datasheet(PDF) 1 Page - ATMEL Corporation |
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AT25256A Datasheet(HTML) 1 Page - ATMEL Corporation |
1 / 18 page 1 Features • Serial Peripheral Interface (SPI) Compatible • Supports SPI Modes 0 (0,0) and 3 (1,1) – Data Sheet Describes Mode 0 Operation • Standard-voltage Operation –2.7 (V CC =2.7Vto5.5V) • Automotive Temperature Range 40°C to +125°C • 5 MHz Clock Rate • 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 • 8-lead JEDEC SOIC and 8-lead TSSOP Packages Description The AT25128A/256A provides 131,072/262,144 bits of serial electrically-erasable pro- grammable 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 automotive applications where low-power and low-voltage operation are essential. The devices are available in space-saving 8-lead JEDEC SOIC and 8-lead TSSOP packages. The AT25128A/256A is enabled through the Chip Select pin (CS) and accessed via a three-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 sepa- rate erase cycle is required before write. Table 1. Pin Configurations Pin Name Function CS Chip Select SCK Serial Data Clock SI Serial Data Input SO Serial Data Output GND Ground VCC Power Supply WP Write Protect HOLD Suspends Serial Input NC No Connect DC Don't Connect 5088F–SEEPR–2/07 SPI Automotive Temperature Serial EEPROMs 128K (16,384 x 8) 256K (32,768 x 8) AT25128A AT25256A Not Recommended for New Design. Replaced by AT25128B/256B Automotive. 1 2 3 4 8 7 6 5 8-lead SOIC 1 2 3 4 8 7 6 5 8-lead TSSOP CS SO WP GND VCC HOLD SCK SI CS SO WP GND VCC HOLD SCK SI |
Similar Part No. - AT25256A_14 |
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Similar Description - AT25256A_14 |
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