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TC55V4000ST-85 Datenblatt(PDF) 1 Page - Toshiba Semiconductor

Teilenummer TC55V4000ST-85
Bauteilbeschribung  524,288-WORD BY 8-BIT STATIC RAM
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Hersteller  TOSHIBA [Toshiba Semiconductor]
Direct Link  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TC55V4000ST-85 Datenblatt(HTML) 1 Page - Toshiba Semiconductor

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TC55V4000ST-70,-85
2001-11-30
1/10
TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS
524,288-WORD BY 8-BIT STATIC RAM
DESCRIPTION
The TC55V4000ST is a 4,194,304-bit static random access memory (SRAM) organized as 524,288 words by 8 bits.
Fabricated using Toshiba's CMOS Silicon gate process technology, this device operates from a single 2.3 to 3.6 V
power supply. Advanced circuit technology provides both high speed and low power at an operating current of 3
mA/MHz and a minimum cycle time of 70 ns. It is automatically placed in low-power mode at 0.5 µA standby
current (at VDD = 3 V, Ta = 25°C) when chip enable ( CE ) is asserted high. There are two control inputs. CE is
used to select the device and for data retention control, and output enable ( OE ) provides fast memory access. This
device is well suited to various microprocessor system applications where high speed, low power and battery
backup are required. The TC55V4000ST is available in a normal pinout plastic 32-pin thin-small-outline package
(TSOP).
FEATURES
• Low-power dissipation
Operating: 10.8 mW/MHz (typical)
• Single power supply voltage of 2.3 to 3.6 V
• Power down features using CE
• Data retention supply voltage of 1.5 to 3.6 V
• Direct TTL compatibility for all inputs and outputs
• Standby Current (maximum):
3.6 V
7
µA
3.0 V
5
µA
PIN ASSIGNMENT (TOP VIEW)
32 PIN TSOP
PIN NAMES
A0~A18
Address Inputs
R/W
Read/Write Control
OE
Output Enable
CE
Chip Enable
I/O1~I/O8
Data Inputs/Outputs
VDD
Power
GND
Ground
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
A11
A9
A8
A13
R/W
A17
A15
VDD
A18
A16
A14
A12
A7
A6
A5
A4
Pin No.
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
42
Pin Name
A3
A2
A1
A0
I/O1
I/O2
I/O3
GND
I/O4
I/O5
I/O6
I/O7
I/O8
CE
A10
OE
• Access Times (maximum):
TC55V4000ST
-70
-85
Access Time
70 ns
85 ns
CE
Access Time
70 ns
85 ns
OE
Access Time
35 ns
45 ns
• Package:
TSOPⅠ32-P-0.50 (ST)
(Weight: 0.24 g typ)
(Normal pinout)
16
1
17
32


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