25A512 Datasheet, PDF (1/34 Pages) Microchip Technology – 512 Kbit SPI Bus Serial EEPROM

25A512
512 Kbit SPI Bus Serial EEPROM
Device Selection Table
Part Number
25A512
VCC Range
1.7-3.0V
Page Size
128 Byte
Temp. Ranges
I
Packages
SN, ST
Features:
• 10 MHz max. Clock Speed
• Byte and Page-level Write Operations
- 128-byte page
- 5 ms max.
- No page or sector erase required
• Low-Power CMOS Technology
- Max. Write Current: 5 mA at 3.0V, 10 MHz
- Read Current: 10 mA at 3.0V, 10 MHz
- Standby Current: 1A at 2.5V (Deep power-
down)
• Electronic Signature for Device ID
• Self-Timed Erase and Write cycles
- Page Erase (5 ms, typical)
- Sector Erase (10 ms/sector, typical)
- Bulk Erase (10 ms, typical)
• Sector Write Protection (16K byte/sector)
- Protect none, 1/4, 1/2 or all of array
• Built-In Write Protection
- Power-on/off data protection circuitry
- Write enable latch
- Write-protect pin
• High Reliability
- Endurance: 1 Million erase/write cycles
- Data Retention: >200 years
- ESD Protection: 4000V
• Temperature Ranges Supported;
- Industrial (I): -40°C to +85°C
• Pb-free and RoHS Compliant
Pin Function Table
Name
Function
CS
SO
WP
VSS
SI
SCK
HOLD
VCC
Chip Select Input
Serial Data Output
Write-Protect
Ground
Serial Data Input
Serial Clock Input
Hold Input
Supply Voltage
Description:
The Microchip Technology Inc. 25A512 is a 512 Kbit
serial EEPROM memory with byte-level and page-level
serial EEPROM functions. It also features Page, Sector
and Chip erase functions typically associated with
Flash-based products. These functions are not required
for byte or page write operations. The memory is
accessed via a simple Serial Peripheral Interface (SPI)
compatible serial bus. The bus signals required are a
clock input (SCK) plus separate data in (SI) and data
out (SO) lines. Access to the device is controlled by a
Chip Select (CS) input.
Communication to the device can be paused via the
hold pin (HOLD). While the device is paused, transi-
tions on its inputs will be ignored, with the exception of
Chip Select, allowing the host to service higher priority
interrupts.
The 25A512 is available in standard packages includ-
ing 8-lead SOIC and TSSOP packages. All packages
are Pb-free and RoHS compliant.
Package Types (not to scale)
SOIC/TSSOP
(SN, ST)
CS 1
SO 2
WP 3
VSS 4
8 VCC
7 HOLD
6 SCK
5 SI
 2010-2011 Microchip Technology Inc.
Preliminary
DS22237C-page 1