at52br3244 ATMEL Corporation, at52br3244 Datasheet - Page 26

• Manufacturer Part Number: at52br3244
• Description: 32-megabit 2m X 16 Flash +4-megabit 256k X 16 / 8-megabit 512k X 16 Sram Stack Memory
• Manufacturer: ATMEL Corporation

4-megabit SRAM
Description
Features
Block Diagram
26
AT52BR3244(T)/3248(T)
The 4-megabit SRAM is a high-speed, super low-power CMOS SRAM organized as
256K words by 16 bits. The SRAM uses high-performance full CMOS process technol-
ogy and is designed for high-speed and low-power circuit technology. It is particularly
well-suited for the high-density low-power system application. This device has a data
retention mode that guarantees data to remain valid at a minimum power supply voltage
of 1.2V.
•
•
•
Fully Static Operation and Tri-state Output
TTL Compatible Inputs and Outputs
Battery Backup
SCS1
SCS2
Voltage (V)
SWE
SOE
SUB
SLB
– 1.2V (Min) Data Retention
A17
2.7 - 3.3
A0
Speed (ns)
70
Current/I
Operation
(Max)
5
ROW DECODER
MEMORY ARRAY
CC
256K X 16
(mA)
Current (µA)
Standby
(Max)
15
2471E–STKD–10/02
Temperature
-40 - 85
(°C)
I/O8
I/O0
I/O7
I/O15