23A512/23LC512
512Kbit SPI Serial SRAM with SDI and SQI Interface
Device Selection Table
Part
Number
Temp.
Ranges
Dual I/O
(SDI)
Quad I/O
(SQI)
Max. Clock
Frequency
VCC Range
Packages
23A512
23LC512
1.7-2.2V
2.5-5.5V
I, E
I, E
Yes
Yes
Yes
Yes
20 MHz(1)
20 MHz(1)
SN, ST, P
SN, ST, P
Note 1: 16 MHz for E-temp.
Features:
Description:
• SPI-Compatible Bus Interface:
- 20 MHz Clock rate
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.
- 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
This device also supports unlimited reads and writes to
the memory array.
• 64K x 8-bit Organization:
- 32-byte page
The 23A512/23LC512 is available in standard
packages including 8-lead SOIC, PDIP and advanced
8-lead TSSOP.
• Byte, Page and Sequential mode for Reads and
Writes
• High Reliability
• Temperature Ranges Supported:
Package Types (not to scale)
- Industrial (I):
-40C to +85C
-40C to +125C
- Automotive (E):
• RoHS Compliant
• 8-Lead SOIC, TSSOP and PDIP Packages
SOIC/TSSOP/PDIP
CS
1
8
VCC
Pin Function Table
SO/SIO1
SIO2
2
3
4
7
6
5
HOLD/SIO3
SCK
Name
Function
CS
Chip Select Input
VSS
SI/SIO0
SO/SIO1
SIO2
Serial Output/SDI/SQI Pin
SQI Pin
VSS
Ground
SI/SIO0
SCK
Serial Input/SDI/SQI Pin
Serial Clock
HOLD/SIO3 Hold/SQI Pin
Power Supply
VCC
2012-2013 Microchip Technology Inc.
DS20005155B-page 1