at52br3224a ATMEL Corporation, at52br3224a Datasheet - Page 28

• Manufacturer Part Number: at52br3224a
• Description: At52br3224a 32-megabit Flash + 4-megabit/ 8-megabit Sram Stack Memory
• Manufacturer: ATMEL Corporation

4-megabit
SRAM
Description
Features
Block Diagram
28
AT52BR3224A(T)/3228A(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 technology 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 guar-
antees data to remain valid at a minimum power supply voltage of 1.2V.
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•
•
Fully Static Operation and Tri-state Output
TTL Compatible Inputs and Outputs
Battery Backup
Voltage (V)
– 1.2V (Min) Data Retention
2.7 - 3.3
SCS1
SCS2
SWE
SOE
SUB
SLB
A17
A0
Speed (ns)
70
Current/I
Operation
(Max)
3
CC
ROW DECODER
MEMORY ARRAY
(mA)
256K X 16
Current (µA)
Standby
(Max)
10
Temperature
-40 - 85
(° C)
3338B–STKD–6/03
I/O8
I/O0
I/O7
I/O15