TC55V16256JI/FTI-12,-15
TOSHIBA MOS DIGITAL INTEGRATED CIRCUIT SILICON GATE CMOS
262,144-WORD BY 16-BIT CMOS STATIC RAM
DESCRIPTION
The TC55V16256JI/FTI is a 4,194,304-bit high-speed static random access memory (SRAM) organized as 262,144
words by 16 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. Data byte control signals (
LB
,
UB
) provide lower and upper
byte 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 TC55V16256JI/FTI is available in
plastic 44-pin SOJ and 44-pin TSOP with 400mil width for high density surface assembly. The TC55V16256JI/FTI
guarantees
鈭?0擄
to 85擄C operating temperature so it is suitable for use in wide operating temperature system.
FEATURES
鈥?/div>
Fast access time (the following are maximum values)
TC55V16256JI/FTI-12:12 ns
TC55V16256JI/FTI-15:15 ns
Low-power dissipation
(the following are maximum values)
Cycle Time
Operation (max)
12
230
15
200
20
170
25
150
ns
mA
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Standby:10 mA (both devices)
Single power supply voltage of 3.3 V
鹵
0.3 V
Fully static operation
All inputs and outputs are LVTTL compatible
Output buffer control using OE
Data byte control using
LB
(I/O1 to I/O8) and
UB
(I/O9 to I/O16)
Package:
SOJ44-P-400-1.27 (JI)
(Weight: 1.64 g typ)
TSOP II44-P-400-0.80 (FTI) (Weight: 0.45 g typ)
PIN ASSIGNMENT
(TOP VIEW)
44 PIN SOJ
44 PIN TSOP
PIN NAMES
A0 to A17
A4
A3
A2
A1
A0
CE
I/O1
I/O2
I/O3
I/O4
V
DD
GND
I/O5
I/O6
I/O7
I/O8
WE
A15
A14
A13
A12
A16
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
A5
A6
A7
OE
UB
LB
I/O16
I/O15
I/O14
I/O13
GND
V
DD
I/O12
I/O11
I/O10
I/O9
NU
A8
A9
A10
A11
A17
A4
A3
A2
A1
A0
CE
I/O1
I/O2
I/O3
I/O4
V
DD
GND
I/O5
I/O6
I/O7
I/O8
WE
A15
A14
A13
A12
A16
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
A5
A6
A7
OE
UB
LB
I/O16
I/O15
I/O14
I/O13
GND
V
DD
I/O12
I/O11
I/O10
I/O9
NU
A8
A9
A10
A11
A17
I/O1 to I/O16
CE
Address Inputs
Data Inputs/Outputs
Chip Enable Input
Write Enable Input
Output Enable Input
Data Byte Control Inputs
Power (+3.3 V)
Ground
Not Usable (Input)
WE
OE
LB
,
UB
V
DD
GND
NU
(TC55V16256JI)
(TC55V16256FTI)
2002-01-07
1/11
TC55V16256FTI-15相關(guān)型號PDF文件下載
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