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P4C1256-35CMLF Datasheet(PDF) 1 Page - Pyramid Semiconductor Corporation

Part # P4C1256-35CMLF
Description  HIGH SPEED 32K x 8 STATIC CMOS RAM
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Manufacturer  PYRAMID [Pyramid Semiconductor Corporation]
Direct Link  http://www.pyramidsemiconductor.com
Logo PYRAMID - Pyramid Semiconductor Corporation

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Document # SRAM119 REV G
Revised June 2007
P4C1256
HIGH SPEED 32K x 8
STATIC CMOS RAM
High Speed (Equal Access and Cycle Times)
— 12/15/20/25/35 ns (Commercial)
— 15/20/25/35/45 ns (Industrial)
— 20/25/35/45/55/70 ns (Military)
Low Power
Single 5V±10% Power Supply
Easy Memory Expansion Using
CE
CE
CE
CE
CE and OE
OE
OE
OE
OE
Inputs
Common Data I/O
Three-State Outputs
FUNCTIONAL BLOCK DIAGRAM
PIN CONFIGURATIONS
1519B
Fully TTL Compatible Inputs and Outputs
Advanced CMOS Technology
Fast t
OE
Automatic Power Down
Packages
—28-Pin 300 mil DIP, SOJ, TSOP
—28-Pin 300 mil Ceramic DIP
—28-Pin 600 mil Ceramic DIP
—28-Pin CERPACK
—28-Pin SOP
—28-Pin LCC (350 mil x 550 mil)
—32-Pin LCC (450 mil x 550 mil)
FEATURES
DESCRIPTION
The P4C1256 is a 262,144-bit high-speed CMOS
static RAM organized as 32Kx8. The CMOS memory
requires no clocks or refreshing, and has equal access
and cycle times. Inputs are fully TTL-compatible. The
RAM operates from a single 5V±10% tolerance power
supply.
Access times as fast as 12 nanoseconds permit greatly
enhanced system operating speeds. CMOS is utilized
to reduce power consumption to a low level. The
P4C1256 is a member of a family of PACE RAM™ prod-
ucts offering fast access times.
DIP (P5, C5, C5-1, D5-2), SOJ (J5), SOP (S11-1, S11-3)
CERPACK (F4) SIMILAR
See end of datasheet for LCC and TSOP
pin configurations.
The P4C1256 device provides asynchronous operation
with matching access and cycle times. Memory loca-
tions are specified on address pins A
0 to A14.
Reading
is accomplished by device selection (
CE and output
enabling (
OE) while write enable (WE) remains HIGH.
By presenting the address under these conditions, the
data in the addressed memory location is presented on
the data input/output pins. The input/output pins stay
in the HIGH Z state when either
CE or OE is HIGH or
WE is LOW.
Package options for the P4C1256 include 28-pin 300
mil DIP, SOJ and TSOP packages. For military tempera-
ture range, Ceramic DIP and LCC packages are avail-
able.


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