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Features
? Serial Peripheral Interface (SPI) Compatible
? Supports SPI Modes 0 (0,0) and 3 (1,1)
– Datasheet describes Mode 0 Operation
? 33 MHz Clock Rate
? Byte Mode and 256-byte Page Mode for Program Operations
? Sector Architecture:
– Eight Sectors with 64K Bytes Each (4M)
– 256 Pages per Sector
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Product Identification Mode
Low-voltage Operation
– 2.7 (V CC = 2.7V to 3.6V)
Sector Write Protection
– Protect 1/8, 1/4, 1/2 or Entire Array
Write Protect (WP) Pin and Write Disable Instructions for
both Hardware and Software Data Protection
Self-timed Program Cycle (30 μs/Byte Typical)
Self-timed Sector Erase Cycle (1 second/Sector Typical)
Single Cycle Reprogramming (Erase and Program) for Status Register
High Reliability
– Endurance: 10,000 Write Cycles Typical
– Data Retention: 20 Years
8-lead EIAJ SOIC and 8-lead Small Array Package (SAP)
4Mbit High
Speed SPI
Serial Flash
Memory
4M (524,288 x 8)
AT25F4096
Description
The AT25F4096 provides 4,194,304 bits of serial reprogrammable Flash memory
organized as 524,288 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 AT25F4096 is available in a space-saving 8-lead EIAJ SOIC and 8-
lead SAP packages.
Table 1. Pin Configurations
8-lead EIAJ SOIC
Pin Name
CS
SCK
Function
Chip Select
Serial Data Clock
CS
SO
WP
GND
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
SI
Serial Data Input
SO
GND
Serial Data Output
Ground
8-lead SAP
___
_____ 8
___
VCC
WP
Power Supply
Write Protect
VCC
HOLD 7
SCK 6
1
2
3
CS
SO
WP
HOLD
Suspends Serial
Input
SI 5 4
Bottom View
GND
2454G–SFLSH–5/06
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