AT25FS040_07 Datasheet, PDF (1/25 Pages) ATMEL Corporation – High Speed Small Sectored SPI Flash Memory 4M (524,288 x 8)

Features
• Serial Peripheral Interface (SPI) Compatible
• Supports SPI Modes 0 (0,0) and 3 (1,1)
– Datasheet describes Mode 0 Operation
• 50 MHz Clock Rate
• Byte Mode and Page Mode Program (1 to 256 Bytes) Operations
• Sector/Block/Page Architecture
– Sixteen 256 byte Pages per Sector
– Sixteen 4 Kbyte Sectors per Block
– Eight uniform 64 Kbyte Blocks
• Self-timed Sector, Block and Chip Erase
• Product Identification Mode with JEDEC Standard
• Low-voltage Operation
– 2.7V (V_CC = 2.7V to 3.6V)
• Hardware and Software Write Protection
– Device protection with Write Protect (WP) Pin
– Write Enable and Write Disable Instructions
– Software Write Protection:
• Upper 1/64, 1/32, 1/16, 1/8, 1/4, 1/2 or Entire Array
• Flexible Op Codes for Maximum Compatibility
• Self-timed Program Cycle
– 30 µs/Byte Typical
• Single Cycle Reprogramming (Erase and Program) for Status Register
• High Reliability
– Endurance: 10,000 Write Cycles Typical
• 8-lead JEDEC 150mil SOIC and 8-lead Ultra Thin Small Array Package (SAP)
• Die Sales: Waffer Form, Tape and Reel, and Bumped Wafers
High Speed
Small Sectored
SPI Flash
Memory
4M (524,288 x 8)
AT25FS040
Description
The AT25FS040 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 AT25FS040 is available in a space-saving 8-lead JEDEC SOIC and
8-lead Ultra Thin SAP packages.
Table 0-1. Pin Configuration
Pin Name
Function
8-lead JEDEC SOIC
CS
SCK
SI
Chip Select
Serial Data Clock
Serial Data Input
CS 1
SO 2
WP 3
GND 4
8 VCC
7 HOLD
6 SCK
5 SI
SO
GND
VCC
WP
HOLD
Serial Data Output
Ground
Power Supply
Write Protect
Suspends Serial
Input
8-lead SAP
__^V_^C_^C_ ⁸
HOLD 7
SCK 6
SI 5
___
1 CS
2 _{_}S_{_}O_{_}
3 WP
4 GND
Bottom View
5107E–SFLSH–8/07