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TC55BS8215J-10 Datasheet

128K x 8-Bit Synchronous Static RAM

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TC55BS8215J-10 pdf
TOSHIBA
131,072 WORD x 8 BIT SYNCHRONOUS STATIC RAM
with Input Registers and Output Registers
1l:55BS8125}10/12
PRELIMINARY
Description
The TC55BS8125J is a 1,048,576 bit synchronous static random access memory fabricated using BiCMOS technology and
organized as 131,072 words by 8 bits. The TC55BS8125J is similar to the TC55BS8128J but has common data I/O lines and
does not have the write-cycle pass-through feature.
Designed for pipelined architectures, this device has internal input and output registers which latch on the positive edge of an
external clock (ClK). All address, data, and control signals are latched. The setup and hold times for the inputs are 2ns and 1ns
respectively. Synchronous SRAMs can lead to faster, more robust system operation by virtually eliminating the timing skew
problems associated with conventional asynchronous SRAMs. For example, write operations are internally self-timed when
initiated - eliminating the need for accurate write pulse generation and timing by the memory controller or microprocessor. For
read cycles, data is available one clock cycle after the address is latched. All inputs and outputs are TIL compatible.
The TC55BS8125J is available in a 36-pin, 400mil SOJ package suitable for high density assembly.
Features
• Fast cycle time
- TC55BS8125J-10 10ns (max.)
- TC55BS8125J-12 12ns (max.)
• Fast clock access time
- TC55BS8125J-10 5ns (max.)
- TC55BS8125J-12 6ns (max.)
• Input and output registers for synchronous operation
• Single power supply: 5V±10%
• Common data I/O
• Package: JEDEC standard pinout
- 36-pin, 400mil SOJ: SOJ36-P-400
Pin Names
AO -A16
1/01 - 1/08
ClK
CE
WE
OE
V DD
GND
NC
Address Inputs
Data Input and Output
Clock Input
Chip Enable Input
Write Enable Input
Output Enable Input
Power (+5V)
Ground
No Connection
Pin Connection (Top View)
TC55BS8125J
NC
A3
A2
Al
AO
CE
1/01
1/02
VOD
GND
1/03
1/04
WE
A16
A15
A14
A13
NC
NC
A4
AS
A6
A7
OE
1/08
1/07
GND
Voo
1/06
1105
CLK
A8
A9
A10
All
A12
TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC.
C-7
Toshiba
Toshiba



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