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TC55V040AFT-55 Datasheet(PDF) 1 Page - Toshiba Semiconductor

Part No. TC55V040AFT-55
Description  524,288-WORD BY 8-BIT FULL CMOS STATIC RAM
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Maker  TOSHIBA [Toshiba Semiconductor]
Homepage  http://www.semicon.toshiba.co.jp/eng
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TC55V040AFT-55 Datasheet(HTML) 1 Page - Toshiba Semiconductor

 
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TC55V040AFT-55,-70
2003-08-06
1/11
TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS
524,288-WORD BY 8-BIT FULL CMOS STATIC RAM
DESCRIPTION
The TC55V040AFT 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 55 ns. It is automatically placed in low-power mode at 0.5
µA standby
current (at VDD
= 3 V, Ta = 25°C, maximum) when chip enable ( CE1 ) is asserted high or (CE2) is asserted low.
There are three control inputs. CE1 and CE2 are 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. And, with a guaranteed operating
extreme temperature range of
−40° to 85°C, the TC55V040AFT can be used in environments exhibiting extreme
temperature conditions. The TC55V040AFT is available in normal and reverse pinout plastic 40-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 CE1 and CE2
• Data retention supply voltage of 1.5 to 3.6 V
• Direct TTL compatibility for all inputs and outputs
• Wide operating temperature range of −40° to 85°C
• Standby Current (maximum):
3.6 V
7
µA
3.0 V
5
µA
PIN ASSIGNMENT (TOP VIEW)
40 PIN TSOP
PIN NAMES
A0~A18
Address Inputs
1
CE , CE2
Chip Enable
R/W
Read/Write Control
OE
Output Enable
I/O1~I/O8
Data Inputs/Outputs
VDD
Power
GND
Ground
NC
No Connection
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Pin Name
A16
A15
A14
A13
A12
A11
A9
A8
R/W
CE2
NC
NC
A18
A7
A6
A5
A4
A3
A2
A1
Pin No.
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
Pin Name
A0
CE1
GND
OE
I/O1
I/O2
I/O3
I/O4
NC
VDD VDD I/O5
I/O6
I/O7
I/O8
A10
NC
NC
GND
A17
• Access Times (maximum):
TC55V040AFT
-55
-70
Access Time
55 ns
70 ns
1
CE
Access Time
55 ns
70 ns
CE2 Access Time
55 ns
70 ns
OE Access Time
30 ns
35 ns
• Package:
TSOPⅠ40-P-1014-0.50 (AFT) (Weight: 0.32 g typ)
(Normal)
21
40
20
1


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