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PDF TC55257BFI-10L Data sheet ( Hoja de datos )

Número de pieza TC55257BFI-10L
Descripción SILICON GATE CMOS STATIC RAM
Fabricantes Toshiba 
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No Preview Available ! TC55257BFI-10L Hoja de datos, Descripción, Manual

TOSHIBA
TC55257BPI/BFI/BSPI/BFTI/BTRI-IOL
SILICON GATE CMOS
32,768 WORD x 8 BIT STATIC RAM
Description
The TC55257BPI 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
5mAlMHz fu:p.) and a minimum cycle time of 100ns.
When CE is a logical high, the device is placed in a low power standby mode in which the standby current is 2J..tA at room tem-
perature. The TC55257BPI 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 TC55257BPI is suitable for use in microprocessor systems where high
speed, low power, and battery backup are required. The TC55257BPI has an operating temperature range of -40 - 85°C so it is
suitable for use in wide operating temperature systems.
The TC55257BPI 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
Pin Connection (Top View)
• Low power dissipation:
• Standby current:
• Single 5V power supply
• Access time (max.)
Access Time
Chip Enable
Access Time
27.5mW/MHz (typ.)
2J.1A at Ta =25°C (max.)
TC55257BPI/BFI/BSPI/BFTI/BTRI-10L
100ns
100ns
Al4
Al2
A7
A6
AS
A4
A3
A2
(forward type) ( reverse type)
Voo
rwv 14
A13
A8
A9
A11
OE
AIO
l.1l
Output Enable Time
• Power down feature:
CE
• Data retention supply voltage:
50ns
2.0 - 5.5V
Al
AO
1/01
1102
CE
1/08
1/07
1/06
• Wide operating temperature:
-40 - 85°C
• Inputs and outputs TIL compatible
• Package
TC55257BPI : DIP28-P-600
1/03
GNO
1/05
1/04
28 28
1!
TC55257BFI
TC55257BSPI
TC55257BFTI
TC55257BTRI
: SOP28-P-450
: DIP28-P-300B
: TSOP28-P
: TSOP28-P-A
Pin Names
AO - A14 Address Inputs
RIW
ReadlWrite Control Input
OE Output Enable Input
CE Chip Enable Input
1/01 - 1/08 Data Input/Output
Voo
GND
Power (+5V)
Ground
PIN NO.
1 2 3 4 5 6 7 8 9 10 11 12 13 14
PIN NAME OE A11
Ag
As A13 RIW Voo A14 A12
A7
A6
As
A4
A3
PIN NO.
15 16 17 18 19 20 21 22 23 24 25 26 27 28
crPIN NAME
A2
A1
Ao 1/01 1/02 1/03 GND 1/04 1/05 1/06 1/07 1/08
AlO
TOSHIBA AMERICA ELECTRONIC CDMPDNENTS, INC.
A-43

1 page




TC55257BFI-10L pdf
Timing Waveforms
Read Cycle (1)
ADDRESSES
Static RAM
TC55257BPI/BFI/BSPI/BFTI/BTRI-10L
DOUT
Write Cycle 1 (4) (RIW Controlled Write)
ADDRESSES
R/W
UNKNOWN
twc
twp
DOUT
DATA STABLE
TOSHIBA AMERICA ELECTRONIC CDMPDNENTS, INC.
A-47

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