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Atmel Electronic Components Datasheet

AT25F4096 Datasheet

4Mbit High Speed SPI Serial Flash Memory

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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
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)
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
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
8-lead EIAJ SOIC
CS
SO
WP
GND
1
2
3
4
8 VCC
7 HOLD
6 SCK
5 SI
8-lead SAP
__V_C_C_ 8
HOLD 7
SCK 6
___
1 CS
2 _S_O_
3 WP
SI 5
4 GND
Bottom View
4Mbit High
Speed SPI
Serial Flash
Memory
4M (524,288 x 8)
AT25F4096
2454G–SFLSH–5/06


Atmel Electronic Components Datasheet

AT25F4096 Datasheet

4Mbit High Speed SPI Serial Flash Memory

No Preview Available !

The AT25F4096 is enabled through the Chip Select pin (CS) and accessed via a 3-wire
interface consisting of Serial Data Input (SI), Serial Data Output (SO), and Serial Clock
(SCK). All write cycles are completely self-timed.
Block Write protection for top 1/8, top 1/4, top 1/2 or the entire memory array is enabled
by programming the status register. Separate write enable and write disable instructions
are provided for additional data protection. Hardware data protection is provided via the
WP pin to protect against inadvertent write attempts to the status register. The HOLD
pin may be used to suspend any serial communication without resetting the serial
sequence.
Absolute Maximum Ratings*
Operating Temperature....................................–40°C to +85°C
Storage Temperature .....................................–65°C to +150°C
Voltage on Any Pin
with Respect to Ground .................................... –1.0V to +5.0V
Maximum Operating Voltage ............................................ 4.2V
DC Output Current........................................................ 5.0 mA
*NOTICE:
Stresses beyond those listed under “Absolute
Maximum Ratings” may cause permanent dam-
age to the device. This is a stress rating only and
functional operation of the device at these or any
other conditions beyond those indicated in the
operational sections of this specification is not
implied. Exposure to absolute maximum rating
conditions for extended periods may affect
device reliability.
Figure 1. Block Diagram
524,288 x 8
2 AT25F4096
2454G–SFLSH–5/06


Part Number AT25F4096
Description 4Mbit High Speed SPI Serial Flash Memory
Maker ATMEL Corporation
Total Page 19 Pages
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