TC55VZM208AJJN/AFTN08,10,12
TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS
524,288-WORD BY 8-BIT CMOS STATIC RAM
DESCRIPTION
The TC55VZM208AJJN/AFTN is a 4,194,304-bit high-speed static random access memory (SRAM) organized as
524,288 words by 8 bits. Fabricated using CMOS technology and advanced circuit techniques to provide high speed,
it operates from a single 3.3 V power supply. Chip enable ( CE ) can be used to place the device in a low-power mode,
and output enable ( OE ) provides fast memory access. This device is well suited to cache memory applications
where high-speed access and high-speed storage are required. All inputs and outputs are directly LVTTL
compatible. The TC55VZM208AJJN/AFTN is available in plastic 36-pin SOJ and 44-pin TSOP with 400mil width
for high density surface assembly.
FEATURES
•
•
Fast access time (the following are maximum values)
TC55VZM208AJJN/AFTN08:8 ns
TC55VZM208AJJN/AFTN10:10 ns
TC55VZM208AJJN/AFTN12:12 ns
Low-power dissipation (IDDO2)
(the following are maximum values)
Cycle Time
8
10
12
ns
Operation (max)
130
120
110
•
•
•
•
•
Single power supply voltage of 3.3 V ± 0.3 V
Fully static operation
All inputs and outputs are LVTTL compatible
Output buffer control using OE
Package:
SOJ36-P-400-1.27 (AJJN)
(Weight: 1.35 g typ)
TSOP II44-P-400-0.80 (AFTN) (Weight: 0.45 g typ)
mA
Standby:4 mA (both devices)
PIN ASSIGNMENT (TOP VIEW)
PIN NAMES
44 PIN TSOP
36 PIN SOJ
A0 to A18
A17
A3
A2
A1
A0
CE
I/O1
I/O2
VDD
GND
I/O3
I/O4
WE
A16
A15
A14
A13
A18
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
NC
A4
A5
A6
A7
OE
I/O8
I/O7
GND
VDD
I/O6
I/O5
A8
A9
A10
A11
A12
NU
(TC55VZM208AJJN)
NC
NC
A17
A3
A2
A1
A0
CE
I/O1
I/O2
VDD
GND
I/O3
I/O4
WE
A16
A15
A14
A13
A18
NC
NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
NC
NC
NC
A4
A5
A6
A7
OE
I/O8
I/O7
GND
VDD
I/O6
I/O5
A8
A9
A10
A11
A12
NU
NC
NC
I/O1 to I/O8
Address Inputs
Data Inputs/Outputs
CE
Chip Enable Input
WE
Write Enable Input
OE
Output Enable Input
VDD
Power (+3.3 V)
GND
Ground
NC
No Connection
NU
Not Usable (Input)
(TC55VZM208AFTN)
2003-01-17
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