TC55257CSPL-70 Datasheet PDF - Toshiba
| Part Number | TC55257CSPL-70 | |
| Description | SILICON GATE CMOS STATIC RAM | |
| Manufacturers | Toshiba | |
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TOSHIBA
TC55257CPL/CFL/CSPL/CFIL/CfRL-70/85/10
SILICON GATE CMOS
PRELIMINARY
32,768 WORD x 8 BIT STATIC RAM
Description
The TC55257CPL is a 262,144 bit CMOS static random access memory organized as 32,768 words by 8 bits and operated from
a single 5V power supply. Advanced circuit techniques provide both high speed and low power features with an operating current of
5mNMHz iliP.) and a minimum cycle time of 70ns.
When CE is a logical high, the device is placed in a low power standby mode in which the standby current is 2jlA at room tem-
perature. The TC55257CPL has two control inputs. Chip enable (CE) allows for device selection and data retention control, while
an output enable input (OE) provides fast memory access. The TC55257CPL is suitable for use in microprocessor systems where
high speed, low power, and battery backup are required.
The TC55257CPL is offered in a standard dual-in-line 28-pin plastic package (0.6/0.3 inch width), a small outline plastic pack-
age, and a thin small outline plastic package (forward type, reverse type).
Features
• Low power dissipation:
• Standby current:
• Single 5V power supply
• Access time (max.)
27.5mW/MHz (typ.)
1001lA (max.)
TC55257CPL/CFL/CSPL/CFTL/CTRL
-70 -85 -10
Access Time
CE Access Time
OE Access Time
70ns
70ns
35ns
85ns
85ns
45ns
100ns
100ns
50ns
• Power down feature:
CE
• Data retention supply voltage:
2.0 - 5.5V
• Inputs and outputs TIL compatible
• Package
TC55257CPL: DIP28-P-600
TC55257CFL
TC55257CSPL
TC55257CFTL
TC55257CTRL
: SOP28-P-450
: DIP28-P-300B
: TSOP28-P
: TSOP28-P-A
Pin Connection (Top View)
0 28 PIN DIP & SOP
0 28 PIN TSOP
A14
A12
A7
A6
AS
A4
A3
A2
1102
1/03
GND
voo
RJIN
AU
A8
A9
All
OE
A10
CE
1108
1107
1106
1/05
1/04
(forward type)
4
!5 28
( reverse type)
l.:l
28 1~
Pin Names
AO - A14 Address Inputs
RIW
OE
ReadlWrite Control Input
Output Enable Input
CE Chip Enable Input
1/01 - 1/08 Data Input/Output
Voo
GND
Power (+5V)
Ground
PIN NO.
12
PIN NAME OE A11
PIN NO.
15 16
PIN NAME A2 A1
3 4 5 6 7 8 9 10 11 12 13 14
Ag As A13 RIW Voo A14 A12 A7 A6 A5 A4 A3
17 18 19 20 21
22 23 24 25 26
27 28
Ao 1/01 1/02 1/03 GND 1/04 1/05 1/06 1/07 1/08 CE A10
TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC.
A-51
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Timing Waveforms
Read Cycle (1)
ADDRESSES
Static RAM
TC55257CPL/CFL/CSPLlCFTLlCTRL-70/85/10
Dour
Write Cycle 1 (4) (R/W Controlled Write)
UNKNOWN
OUTPUT DATA VALID
twc
ADDRESSES
twp
tcw
Dour
DATA STABLE
PRELIMINARY
TOSHIBA AMERICA ELECTRONIC COMPONENTS, INC.
A-55
Preview 5 Page |
Part DetailsOn this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for TC55257CSPL-70 electronic component. |
| Information | Total 7 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
| Download | [ TC55257CSPL-70.PDF Datasheet ] | |
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