23A1024/23LC1024
1Mbit 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
23A1024
23LC1024
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 Bus Interface:
- SPI compatible
The Microchip Technology Inc. 23A1024/23LC1024
are 1 Mbit 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), a data in line (SI) and a data out line
(SO). 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.
- SDI (dual) and SQI (quad) compatible
- 20 MHz Clock rate for all modes
• 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.
• 128K x 8-bit Organization:
- 32-byte page
The 23A1024/23LC1024 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
Package Types (not to scale)
• Temperature Ranges Supported:
- Industrial (I):
- Automotive (E):
-40C to +85C
-40C to +125C
• RoHS Compliant
SOIC/TSSOP/PDIP
• 8 Lead SOIC, TSSOP and PDIP Packages
CS
1
8
VCC
SO/SIO1
SIO2
2
3
7
6
HOLD/SIO3
SCK
Pin Function Table
Name
Function
VSS
4
5
SI/SIO0
CS
Chip Select Input Pin
Serial Output/SDI/SQI Pin
SQI Pin
SO/SIO1
SIO2
VSS
Ground Pin
SI/SIO0
SCK
Serial Input/SDI/SQI Pin
Serial Clock Pin
HOLD/SIO3 Hold/SQI Pin
VCC
Power Supply Pin
2012-2015 Microchip Technology Inc.
DS20005142C-page 1