cdp1822 Intersil Corporation, cdp1822 Datasheet - Page 7

• Manufacturer Part Number: cdp1822
• Description: 256-word X 4-bit Lsi Static Ram
• Manufacturer: Intersil Corporation

R/W
CS2
CSI
DI1
DI2
DI3
DI4
OD
A0
A1
A2
A3
A4
A5
A6
A7
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
†
20
19
17
18
4
3
2
1
21
9
11
13
15
5
6
7
INPUT PROTECTION
NETWORK
ALL COLUMNS
ALL ROWS
DESELECT
DESELECT
FUNCTION
FUNCTION
CONTROL
BUFFERS
BUFFERS
GATES
INPUT
INPUT
AND
AND
(5)
(4)
(3)
A
V
V
SS
DD
FIGURE 5. FUNCTIONAL BLOCK DIAGRAM FOR CDP1822 AND CDP1822C
DECODERS
CONTROL
ROW
(32)
B
† †
OUTPUT
PROTECTION
CIRCUIT
CDP1822, CDP1822C
DECODERS
STORAGE
V
COLUMN
V
(8 x 32)
ARRAY
CONTROL
BIT (1)
SS
DD
(8)
C
6-17
DECODERS
STORAGE
COLUMN
(8 x 32)
ARRAY
BIT (2)
† † †
(8)
OVER VOLTAGE
PROTECTION
CIRCUIT
STORAGE
DECODERS
COLUMN
(8 x 32)
ARRAY
BIT (3)
V
V
SS
DD
(8)
STORAGE
DECODERS
COLUMN
(8 x 32)
ARRAY
BIT (4)
(8)
BITS
(1-4)
DRIVERS
BUFFER
(4)
22
10
12
14
16
8
††
††
††
††
† † †
† † †
V
D01
D02
D03
D04
V
DD
SS