AT25512 Datasheet, PDF (1/17 Pages) ATMEL Corporation – SPI Serial EEPROM

Features
• Serial Peripheral Interface (SPI) Compatible
• Supports SPI Modes 0 (0,0) and 3 (1,1)
• Data Sheet Describes Mode 0 Operation
• Low-voltage Operation
– 1.8 (V_CC = 1.8V to 3.6V)
• 10 MHz Clock Rate (2.7 − 3.6V)
• 128-byte Page Mode and Byte Write Operation Supported
• 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 Max)
• High-reliability
– Endurance: 1 Million Write Cycles
– Data Retention: >40 Years
• Automotive Grade Temperature Available
• Lead-free/Halogen-free Devices
• 8-lead JEDEC SOIC, 8-lead TSSOP and 8-lead SAP Packages
• Die Sales: Wafer Form, Waffle Pack, and Bumped Die
Description
SPI Serial
EEPROM
512K (65,536 x 8)
AT25512
The AT25512 provides 524,288 bits of serial electrically-erasable programmable
read only memory (EEPROM) organized as 65,536 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 devices are available in space saving
8-lead JEDEC SOIC, 8-lead TSSOP and 8-lead SAP packages. In addition, the
entire family is available in 1.8V (1.8V to 3.6V) versions.
Advance
Information
The AT25512 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 programming cycles are completely self-timed, and no separate
Erase cycle is required before Write.
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
NC
No Connect
8-lead SOIC
CS 1
SO 2
WP 3
GND 4
8 VCC
7 HOLD
6 SCK
5 SI
8-lead TSSOP
CS 1
SO 2
WP 3
GND 4
8 VCC
7 HOLD
6 SCK
5 SI
8-lead SAP
VCC 8
HOLD 7
SCK 6
SI 5
1 CS
2 SO
3 WP
4 GND
Bottom View
5165A–SEEPR–1/07
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