AT25P1024 Datasheet, PDF (1/13 Pages) ATMEL Corporation – SPI Serial EEPROMs

Features
• Serial Peripheral Interface (SPI) Compatible
• Supports SPI Modes 0 (0,0) and 3 (1,1)
• 2.1 MHz Clock Rate
• 128-Byte Page Mode Only for Write Operations
• Low Voltage and Standard Voltage Operation
– 5.0 (V_CC = 4.5V to 5.5V)
– 2.7 (V_CC = 2.7V to 5.5V)
– 1.8 (V_CC = 1.8V to 3.6V)
• 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 Typical)
• High Reliability
– Endurance: 100,000 Write Cycles
– Data Retention: >40 Years
– ESD Protection: >3000V
• 20-Pin JEDEC SOIC and 8-Pin Leadless Array Package
Description
The AT25P1024 provides 1,048,576 bits of serial electrically erasable programmable
read only memory (EEPROM) organized as 131,072 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 AT25P1024 is available in space saving
20-pin JEDEC SOIC and 8-pin leadless array (LAP) packages.
Pin Configurations
(continued)
Pin Name
CS
SCK
SI
SO
GND
VCC
WP
HOLD
NC
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Write Protect
Suspends Serial Input
No Connect
20-Lead SOIC
CS 1
SO 2
NC 3
NC 4
NC 5
NC 6
NC 7
NC 8
WP 9
GND 10
20 VCC
19 HOLD
18 NC
17 NC
16 NC
15 NC
14 NC
13 NC
12 SCK
11 SI
8-Pin LAP
VCC 8
HOLD 7
SCK 6
SI 5
1 CS
2 SO
3 WP
4 GND
Bottom View
SPI Serial
EEPROMs
1M (131,072 x 8)
AT25P1024
Preliminary
Rev. 1082C–08/98
1