AT25512_08 Datasheet, PDF (1/21 Pages) ATMEL Corporation – SPI Serial EEPROM 512K (65,536 x 8)

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 5.5V)
• 20 MHz Clock Rate (4.5 – 5.5V)
• 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
• 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
SPI Serial
EEPROM
512K (65,536 x 8)
AT25512
Description
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 opti-
mized 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 5.5V) versions.
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 0-1.
Pin Name
CS
SCK
SI
SO
GND
VCC
WP
HOLD
NC
Pin Configurations
Function
Chip Select
Serial Data Clock
Serial Data Input
Serial Data Output
Ground
Power Supply
Write Protect
Suspends Serial Input
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
5165E–SEEPR–8/08