25LC512_14 Datasheet, PDF (1/30 Pages) Microchip Technology – 512 Kbit SPI Bus Serial EEPROM

25LC512
512 Kbit SPI Bus Serial EEPROM
Extended (M) Operating Temperatures
Device Selection Table
Part Number
25LC512
VCC Range
2.5-5.5V
Page Size
128 Byte
Temp. Ranges
-55°C to +125°C (M)
Packages
SN
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: 7 mA at 5.5V
- Read Current: 10 mA at 5.5V, 10 MHz
- Standby Current: 1 A at 2.5V, 85°C (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:
- Extended (M):
-55C to +125C
• 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. 25LC512 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 25LC512 is available in the 8-lead SOIC package.
Package Types (not to scale)
SOIC
(SN)
CS 1
SO 2
WP 3
VSS 4
8 VCC
7 HOLD
6 SCK
5 SI
 2014 Microchip Technology Inc.
DS20005265A-page 1