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TC55W800FT Datasheet

  • TC55W800FT

  • 524,288-WORD BY 16-BIT/1,048,576-WORD BY 8-BIT FULL CMOS STA...

  • 182.17KB

  • 13頁

  • TOSHIBA

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TC55W800FT-55,-70
TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS
524,288-WORD BY 16-BIT/1,048,576-WORD BY 8-BIT FULL CMOS STATIC RAM
DESCRIPTION
The TC55W800FT is a 8,388,608-bit static random access memory (SRAM) organized as 524,288 words by 16
bits/1,048,576 words by 8 bits. Fabricated using Toshiba's CMOS Silicon gate process technology, this device
operates from a single 2.3 to 3.3 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
mA
standby current (at V
DD
=
3 V, Ta
=
25擄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. 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. And, with a guaranteed operating extreme
temperature range of
-40擄
to 85擄C, the TC55W800FT can be used in environments exhibiting extreme temperature
conditions. The TC55W800FT is available in a plastic 48-pin thin-small-outline package (TSOP).
FEATURES
路
路
路
路
路
路
路
Low-power dissipation
Operating: 9.9 mW/MHz (typical)
Single power supply voltage of 2.3 to 3.3 V
Power down features using
CE1
and CE2
Data retention supply voltage of 1.5 to 3.3 V
Direct TTL compatibility for all inputs and outputs
Wide operating temperature range of
-40擄
to 85擄C
Standby Current (maximum):
3.3 V
3.0 V
10
mA
5
mA
路
Access Times (maximum):
TC55W800FT
-55
Access Time
CE1
Access Time
-70
70 ns
70 ns
70 ns
35 ns
55 ns
55 ns
55 ns
30 ns
CE2 Access Time
OE
Access Time
路
Package:
TSOP鈪?8-P-1220-0.50 (Weight: 0.52 g typ)
PIN ASSIGNMENT
(TOP VIEW)
48 PIN TSOP
PIN NAMES
A0~A18
1
48
A-1~A18
CE1
, CE2
Address Inputs (Word Mode)
Address Inputs (Byte Mode)
Chip Enable
Read/Write Control
Output Enable
Data Byte Control
Data Inputs/Outputs
Byte (麓8 mode) Enable
Power
Ground
No Connection
R/W
OE
LB
,
UB
24
(Normal)
25
I/O1~I/O16
BYTE
V
DD
GND
NC
Pin No.
Pin Name
Pin No.
Pin Name
Pin No.
Pin Name
1
A15
17
A17
33
I/O3
2
A14
18
A7
34
I/O11
3
A13
19
A6
35
I/O4
4
A12
20
A5
36
I/O12
5
A11
21
A4
37
V
DD
6
A10
22
A3
38
I/O5
7
A9
23
A2
39
8
A8
24
A1
40
9
NC
25
A0
41
10
NC
26
CE1
11
R/W
27
GND
43
12
CE2
28
OE
13
NC
29
I/O1
45
14
UB
15
LB
16
A18
32
I/O10
48
A16
30
I/O9
46
31
I/O2
47
42
44
I/O13 I/O6
I/O14 I/O7
I/O15 I/O8
I/O16 GND
BYTE
/A-1
2001-10-03
1/13

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