23A512 Datasheet, PDF (1/32 Pages) Microchip Technology – 512Kbit SPI Serial SRAM with SDI and SQI Interface

23A512/23LC512
512Kbit SPI Serial SRAM with SDI and SQI Interface
Device Selection Table
Part
Number
23A512
23LC512
VCC Range
1.7-2.2V
2.5-5.5V
Dual I/O
(SDI)
Yes
Yes
Features:
• SPI-Compatible Bus Interface:
- 20 MHz Clock rate
- SPI/SDI/SQI 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
• 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
SIO2
Vss
SI/SIO0
SCK
HOLD/SIO3
Vcc
Chip Select Input
Serial Output/SDI/SQI Pin
SQI Pin
Ground
Serial Input/SDI/SQI Pin
Serial Clock
Hold/SQI Pin
Power Supply
Quad I/O
(SQI)
Yes
Yes
Max. Clock
Frequency
20 MHz
20 MHz
Packages
SN, ST, P
SN, ST, P
Description:
The Microchip Technology Inc. 23A512/23LC512 are
512Kbit Serial SRAM devices. 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 Interface) and SQI (Serial Quad Interface)
is supported if your application needs faster data rates.
This device also supports unlimited reads and writes to
the memory array.
The 23A512/23LC512 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
SIO2 3
Vss 4
8 Vcc
7 HOLD/SIO3
6 SCK
5 SI/SIO0
 2012 Microchip Technology Inc.
Preliminary
DS25155A-page 1