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UT62256C

更新时间: 2024-11-23 22:41:39
品牌 Logo 应用领域
其他 - ETC 静态存储器
页数 文件大小 规格书
12页 163K
描述
32K X 8 BIT LOW POWER CMOS SRAM

UT62256C 数据手册

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UTRON  
UT62256C  
32K X 8 BIT LOW POWER CMOS SRAM  
Rev. 1.0  
FEATURES  
GENERAL DESCRIPTION  
Access time : 35/70ns (max.)  
Low power consumption:  
Operating : 40/30 mA (typical.)  
Standby : 3mA (typical) normal  
2uA (typical) L-version  
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.  
1uA (typical) LL-version  
Single 5V power supply  
The UT62256C is designed for high-speed  
All inputs and outputs are TTL compatible  
Fully static operation  
and low power application. It is particularly  
well suited for battery back-up nonvolatile  
memory application.  
Three state outputs  
Data retention voltage : 2V (min.)  
Package : 28-pin 600 mil PDIP  
28-pin 330 mil SOP  
The UT62256C operates from a single 5V  
power supply and all inputs and outputs are  
fully TTL compatible  
28-pin 8mmx13.4mm STSOP  
FUNCTIONAL BLOCK DIAGRAM  
PIN CONFIGURATION  
A4  
A3  
Vcc  
WE  
A14  
A12  
A7  
1
28  
27  
2
3
26  
25  
A13  
A8  
A14  
4
A6  
.
.
.
V
CC  
A13  
A12  
A7  
A5  
5
6
24  
23  
A9  
MEMORY ARRAY  
ROW  
A4  
A11  
512 ROWS × 512 COLUMNS  
DECODER  
7
8
9
22  
21  
A3  
V
SS  
OE  
A2  
A10  
A6  
20  
19  
A1  
CE  
A5  
A8  
A0  
10  
11  
I/O8  
I/O7  
I/O6  
I/O5  
I/O4  
18  
17  
I/O1  
I/O2  
I/O3  
Vss  
12  
. . .  
13  
14  
16  
15  
I/O1  
.
.
.
I/O  
CONTROL  
COLUMN I/O  
.
.
.
.
.
.
I/O8  
COLUMN DECODER  
PDIP/SOP  
CE  
WE  
OE  
LOGIC  
CONTROL  
A10  
CE  
1
28  
OE  
A11  
27  
26  
25  
2
3
A10  
A11  
A9  
A2 A1 A0  
A9  
A8  
I/O8  
I/O7  
4
PIN DESCRIPTION  
A13  
WE  
Vcc  
5
6
24  
23  
I/O6  
I/O5  
I/O4  
7
8
9
22  
21  
SYMBOL  
DESCRIPTION  
A14  
A12  
A7  
Vss  
I/O3  
I/O2  
I/O1  
A0  
UT62256C  
A0 - A14  
Address Inputs  
20  
19  
I/O1 - I/O8  
Data Inputs/Outputs  
10  
11  
18  
17  
16  
15  
A6  
Chip Enable Input  
Write Enable Input  
Output Enable Input  
CE  
WE  
OE  
VCC  
VSS  
12  
13  
14  
A5  
A4  
A1  
A3  
A2  
Power Supply  
Ground  
STSOP  
____________________________________________________________________________________________  
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  
1

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