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TC554161AFT-70 데이터시트(PDF) 1 Page - Toshiba Semiconductor

부품명 TC554161AFT-70
상세설명  262,144-WORD BY 16-BIT STATIC RAM
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제조업체  TOSHIBA [Toshiba Semiconductor]
홈페이지  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

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TC554161AFT-70,-85,-10,-70L,-85L,-10L
2001-08-17
1/10
TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS

262,144-WORD BY 16-BIT STATIC RAM
DESCRIPTION
The TC554161AFT is a 4,194,304-bit static random access memory (SRAM) organized as 262,144 words by 16bits.
Fabricated using Toshiba's CMOS Silicon gate process technology, this device operates from a single 5V ± 10%
power supply. Advanced circuit technology provides both high speed and low power at an operating current of 10
mA/MHz (typ) and a minimum cycle time of 70 ns. It is automatically placed in low-power mode at 2 mA standby
current (typ) 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. Data byte control pin ( LB ,
UB
) provides lower and upper byte access. This device is well suited to various microprocessor system applications
where high speed, low power and battery backup are required. The TC554161AFT is available in a plastic 54-pin
thin-small-outline package (TSOP).
FEATURES
· Low-power dissipation
Operating: 55 mW/MHz (typical)
· Single power supply voltage of 5 V ± 10%
· Power down features using CE .
· Data retention supply voltage of 2 to 5.5 V
· Direct TTL compatibility for all inputs and outputs
· Standby Current (maximum):
TC554161AFT
-70,-85,-10
-70L,-85L,-10L
5.5 V
100
mA
50
mA
3.0 V
50
mA
25
mA
PIN ASSIGNMENT (TOP VIEW)
PIN NAMES
A0~A17
Address Inputs
I/O1~I/O16
Data Inputs/Outputs
CE
Chip Enable
R/W
Read/Write Control
OE
Output Enable
LB
, UB
Data Byte Control
VDD
Power (
+5 V)
GND
Ground
NC
No Connection
OP*
Option
*: OP pin must be open of connected to GND.
· Access Times (maximum):
TC554161AFT
-70,-70L
-85,-85L
-10,-10L
Access Time
70 ns
85 ns
100 ns
CE
Access Time
70 ns
85 ns
100 ns
OE
Access Time
35 ns
45 ns
50 ns
· Package:
TSOP II54-P-400-0.80 (AFT) (Weight: 0.57 g typ)
NC
A3
A2
A1
A0
I/O16
I/O15
VDD
GND
I/O14
I/O13
OP
R/W
I/O12
I/O11
GND
VDD
I/O10
I/O9
NC
A17
A16
A15
A14
A13
A4
A5
A6
A7
NC
I/O1
I/O2
VDD
GND
I/O3
I/O4
OP
NC
I/O5
I/O6
GND
VDD
I/O7
I/O8
A8
A9
A10
A11
A12
NC
1
54
2
53
3
52
4
51
5
50
6
49
7
48
8
47
9
46
10
45
11
44
12
43
13
42
14
41
15
40
16
39
17
38
18
37
19
36
20
35
21
34
22
33
23
32
24
31
25
30
26
29
27
28
CE
OE
UB
LB
(Normal pinout)


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