Features
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Serial Peripheral Interface (SPI) Compatible
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Supports SPI Modes 0 (0,0) and 3 (1,1)
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– Datasheet Describes Mode 0 Operation
Low-voltage and Standard-voltage Operation
– 2.7 (V
CC
= 2.7V to 5.5V)
– 1.8 (V
CC
= 1.8V to 5.5V)
20 MHz 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 (5 ms max)
High Reliability
– Endurance: One Million Write Cycles
– Data Retention: 100 Years
Available in Automotive
8-lead JEDEC PDIP, 8-lead JEDEC SOIC, 8-lead TSSOP, 8-lead MAP, 8-lead Ultra Thin
Mini-MAP (MLP 2x3) and 8-lead TSSOP Packages
Die Sales: Wafer Form, Tape and Reel, and Bumped Wafers
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SPI Serial
EEPROMs
8K (1024 x 8)
16K (2048 x 8)
32K (4096 x 8)
64K (8192 x 8)
AT25080A
AT25160A
AT25320A
AT25640A
Description
The AT25080A/160A/320A/640A provides 8192/16384/32768/65536 bits of serial
electrically-erasable programmable read-only memory (EEPROM) organized as
1024/2048/4096/8192 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 AT25080A/160A/320A/640A is available in space-saving 8-lead
PDIP, 8-lead JEDEC SOIC, 8-lead MAP, 8-lead Ultra Thin Mini-MAP (MLP 2x3), 8-
lead TSSOP and 8-Lead Ultra Leadframe Land Grid Array (ULLGA) packages.
The AT25080A/160A/320A/640A 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 separate erase cycle is required before write.
3347M–SEEPR–06/07
ATMEL [ ATMEL CORPORATION ]
