PF990-02
SRM2AW416LLBT1/7
4M-bit Static RAM
●Super Low Voltage Operation and Low Current Consumption
●Access Time 100ns (1.8V) / 70ns (2.2V)
●262,144 Words x 16-bit Asynchtonous
●Wide Temperature Range
■ DESCRIPTION
The SRM2AW416LLBT1/7 is a 262,144words x 16-bit asynchronous, random access memory on a monolithic
CMOS chip. Its very low standby power requirement makes it ideat for applications requiring non-volatile syorage
with back-up batteries. The asynchronous and static nature of the memory requires no external clock or refreshing
circuit. It is possible to contorol the date width by the data byte control. Both the Input and output ports are TTL
compatible and 3-state output allows easy expansion of memory capacity. The temperature range of the
SRM2AW416LLBT1/7 is from –40 to 85°C, and it is suitable for the industrial products.
■ FEATURES
● Fast Access time ........................ 100ns (at 1.8V) / 70ns (at 2.2V)
● Low supply current ..................... LL Version
● Completely static ........................ No clock required
● Supply voltage............................ 1.8V to 2.85V
● TTL compatible inputs and outputs
● 3-state output with wired-OR capability
● Non-volatile storage with back-up batteries
● Package ..................................... SRM2AW416LLBT
TFBGA-48 pin (Tape CSP)
■ BLOCK DIAGRAM
A0
A1
A2
A3
A4
A5
10
1024
A6
Memory Cell Array
1024 x 256 x 16
A7
A8
A9
A10
A11
A12
A13
A14
A15
A16
A17
256x16
8
256
Column Gate
CS
LB
UB
16
OE
I/O Buffer
WE
I/O1
I/O16