參數(shù)資料
型號: LH6V4256
廠商: Sharp Corporation
英文描述: CMOS 1M (256K x 4) Dynamic RAM
中文描述: 100萬的CMOS(256K × 4)動態(tài)隨機存儲器
文件頁數(shù): 3/18頁
文件大小: 198K
代理商: LH6V4256
OE CLOCK
GENERATOR
3
V
SS
RAS
CAS
6V4256-4
R/W CLOCK
GENERATOR
CAS CLOCK
GENERATOR
RAS CLOCK
GENERATOR
ROW
ADDRESS
COUNTER
ADDRESS
BUFFER
16
4
17
REFRESH
CONTROL
DATA IN
BUFFER
DATA OUT
BUFFER
MEMORY
ARRAY
1,048,576 BITS
C
ROW
DECODER
V
BB
GENERATOR
I/O
1
1
I/O
2
2
I/O
3
18
I/O
4
19
WE
OE
20
V
CC
10
A
0
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
6
7
12
13
14
15
8
9
11
S
NOTE:
Pin numbers apply to the 20-pin DIP.
Figure 4. LH6V4256 Block Diagram
PIN DESCRIPTION
PIN NAME
FUNCTION
A
0
– A
8
RAS
CAS
WE
OE
Address input
Row address strobe
Column address strobe
Write enable
Output enable
PIN NAME
FUNCTION
I/O
1
– I/O
4
V
CC
V
SS
NC
Data input/output
Power supply (+3.3 V)
Power supply (0 V)
No connection
LH6V4256
CMOS 1M (256K
×
4) Dynamic RAM
2-16
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