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UT62256C Datasheet, PDF (1/12 Pages) List of Unclassifed Manufacturers – 32K X 8 BIT LOW POWER CMOS SRAM
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Rev. 1.0
UTRON
UT62256C
32K X 8 BIT LOW POWER CMOS SRAM
FEATURES
GENERAL DESCRIPTION
Access time : 35/70ns (max.)
Low power consumption:
Operating : 40/30 mA (typical.)
Standby : 3mA (typical) normal
2uA (typical) L-version
1uA (typical) LL-version
Single 5V power supply
All inputs and outputs are TTL compatible
Fully static operation
Three state outputs
Data retention voltage : 2V (min.)
Package : 28-pin 600 mil PDIP
28-pin 330 mil SOP
28-pin 8mmx13.4mm STSOP
The UT62256C is a 262,144-bit low power
CMOS static random access memory
organized as 32,768 words by 8 bits. It is
fabricated using high performance, high
reliability CMOS technology.
The UT62256C is designed for high-speed
and low power application. It is particularly
well suited for battery back-up nonvolatile
memory application.
The UT62256C operates from a single 5V
power supply and all inputs and outputs are
fully TTL compatible
FUNCTIONAL BLOCK DIAGRAM PIN CONFIGURATION
A4
A3
A14
.
A13
ROW
. A12 DECODER
A7
A6
.
A5
A8
I/O1
...
... I/O
CONTROL
I/O8
...
MEMORY ARRAY
512 ROWS × 512 COLUMNS
. ..
COLUMN I/O
COLUMN DECODER
VCC
VSS
A14
1
A12
2
A7
3
A6
4
A5
5
A4
6
A3
7
A2
8
A1
9
A0
10
I/O1
11
I/O2
12
I/O3
13
Vss
14
28
Vcc
27
WE
26
A13
25
A8
24
A9
23
A11
22
OE
21
A10
20
CE
19
I/O8
18
I/O7
17
I/O6
16
I/O5
15
I/O4
PDIP/SOP
CE
LOGIC
WE CONTROL
OE
A10 A9 A11 A2 A1 A0
PIN DESCRIPTION
SYMBOL
A0 - A14
I/O1 - I/O8
CE
WE
OE
VCC
VSS
DESCRIPTION
Address Inputs
Data Inputs/Outputs
Chip Enable Input
Write Enable Input
Output Enable Input
Power Supply
Ground
OE
1
28
A11
2
27
A9
3
26
A8
4
25
A13
5
24
WE
6
23
Vcc
7
22
A14
8
UT62256C
21
A12
9
20
A7
10
19
A6
11
18
A5
12
17
A4
13
16
A3
14
15
STSOP
A10
CE
I/O8
I/O7
I/O6
I/O5
I/O4
Vss
I/O3
I/O2
I/O1
A0
A1
A2
____________________________________________________________________________________________
UTRON TECHNOLOGY INC.
P80027
1F, No. 11, R&D Rd. II, Science-Based Industrial Park, Hsinchu, Taiwan, R. O. C.
TEL: 886-3-5777882 FAX: 886-3-5777919
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