23LCV512 Datasheet, PDF (1/30 Pages) Microchip Technology – 512 Kbit SPI Serial SRAM with Battery Backup and SDI Interface

23LCV512
512 Kbit SPI Serial SRAM with Battery Backup and SDI Interface
Device Selection Table
Part
Number
23LCV512
VCC Range
2.5-5.5V
Dual I/O
(SDI)
Yes
Features:
• SPI-Compatible Bus Interface:
- 20 MHz Clock rate
- SPI/SDI mode
• Low-Power CMOS Technology:
- Read Current: 3 mA at 5.5V, 20 MHz
- Standby Current: 4 A at +85°C
• Unlimited Read and Write Cycles
• External Battery Backup support
• Zero Write Time
• 64K x 8-bit Organization:
- 32-byte page
• Byte, Page and Sequential mode for Reads and
Writes
• High Reliability
• Temperature Range Supported:
- Industrial (I):
-40C to +85C
• Pb-Free and RoHS Compliant, Halogen Free.
• 8-Lead SOIC, TSSOP and PDIP Packages
Pin Function Table
Name
Function
CS
SO/SIO1
Vss
SI/SIO0
SCK
VBAT
Vcc
Chip Select Input
Serial Output/SDI pin
Ground
Serial Input/SDI pin
Serial Clock
External Backup Supply Input
Power Supply
Battery
Backup
Yes
Max. Clock
Frequency
20 MHz
Packages
SN, ST, P
Description:
The Microchip Technology Inc. 23LCV512 is a 512 Kbit
Serial SRAM device. 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 through a Chip
Select (CS) input. Additionally, SDI (Serial Dual Inter-
face) is supported if your application needs faster data
rates.
This device also supports unlimited reads and writes to
the memory array, and supports data backup via exter-
nal battery/coin cell connected to VBAT (pin 7).
The 23LCV512 is available in standard packages
including 8-lead SOIC, PDIP and advanced 8-lead
TSSOP.
Package Types (not to scale)
SOIC/TSSOP/PDIP
CS 1
SO/SIO1 2
NC 3
Vss 4
8 Vcc
7 VBAT
6 SCK
5 SI/SIO0
 2012 Microchip Technology Inc.
Preliminary
DS25157A-page 1