TC554001AF/AFT/ATR-70,-85,-10,-70L,-85L,-10L
TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS
524,288-WORD BY 8-BIT STATIC RAM
DESCRIPTION
The TC554001AF/AFT/ATR 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 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 µA 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. This device is well suited to
various microprocessor system applications where high speed, low power and battery backup are required. The
TC554001AF/AFT/ATR is available in a standard plastic 32-pin small-outline package (SOP) and normal and
reverse pinout plastic 32-pin thin-small-outline package (TSOP).
FEATURES
•
•
•
•
•
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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 2.0 to 5.5 V
Direct TTL compatibility for all inputs and outputs
Standby Current (maximum):
•
TC554001AF/AFT/ATR
-70,-70L
-70L,-85L,-10L
5.5 V
100 µA
50 µA
3.0 V
50 µA
25 µA
PIN ASSIGNMENT (TOP VIEW)
A18
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O1
I/O2
I/O3
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
(AF/AFT)
VDD
A15
A17
R/W
A13
A8
A9
A11
OE
A10
CE
I/O8
I/O7
I/O6
I/O5
I/O4
70 ns
85 ns
100 ns
CE Access Time
•
-10,-10L
70 ns
85 ns
100 ns
OE Access Time
-70,-85,-10
-85,-85L
Access Time
TC554001AF/AFT/ATR
32 PIN SOP & TSOP
Access Times (maximum):
35 ns
45 ns
50 ns
Package:
SOP32-P-525-1.27 (AF)
(Weight: 1.14 g typ)
TSOP II32-P-400-1.27 (AFT) (Weight: 0.53 g typ)
TSOP II32-P-400-1.27A (ATR) (Weight: 0.53 g typ)
PIN NAMES
32 PIN TSOP
VDD
A15
A17
R/W
A13
A8
A9
A11
OE
A10
CE
I/O8
I/O7
I/O6
I/O5
I/O4
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
A18
A16
A14
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O1
I/O2
I/O3
GND
A0~A18
Address Inputs
R/W
Read/Write Control
OE
Output Enable
CE
Chip Enable
I/O1~I/O8
Data Inputs/Outputs
VDD
Power (+5 V)
GND
Ground
(ATR)
2003-06-23
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