at52br1664at ATMEL Corporation, at52br1664at Datasheet - Page 26

• Manufacturer Part Number: at52br1664at
• Description: 16-megabit Flash 4-megabit Sram Stack Memory
• Manufacturer: ATMEL Corporation

4-megabit
SRAM
Description
Features
Block Diagram
26
AT52BR1664A(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
ROW DECODER
MEMORY ARRAY
CC
256K X 16
(mA)
Standby Current
(Max)
(µA)
10
Temperature
3361C–STKD–1/04
-40 - 85
(° C)
I/O8
I/O0
I/O7
I/O15