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
Product Identification Mode
Low-voltage Operation
– 2.7 (VCC = 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 8lead SAP packages.
Table 1. Pin Configurations
Pin Name
Function
CS
Chip Select
SCK
Serial Data Clock
SI
Serial Data Input
SO
Serial Data Output
GND
8-lead EIAJ SOIC
Ground
VCC
Power Supply
WP
Write Protect
HOLD
Suspends Serial
Input
CS
SO
WP
GND
1
2
3
4
8
7
6
5
VCC
HOLD
SCK
SI
8-lead SAP
___
VCC
_____ 8
HOLD 7
SCK 6
SI 5
1
2
3
4
CS
SO
___
WP
GND
Bottom View
2454G–SFLSH–5/06
