CDP1821C Просмотр технического описания (PDF) - Intersil
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производитель
CDP1821C Datasheet PDF : 7 Pages
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Functional Block Diagram
CDP1821C/3
CS
R/W
ROW
BUFFERS
COL. 0
COL. 31
a0
A0
ROW 0
A3
1/16
ROW
a3 DECODER
16 x 32
CELL ARRAY
ROW 15
DI
CS • R/W • A4
COLUMN BUFFERS
A4
A5
1/32
COLUMN DECODER
A9
A4
DI
CS • R/W • A4
COLUMN BUFFERS
a0
1/16
ROW
DECODER
a3
16 x 32
CELL ARRAY
ROW 16
ROW 31
COL. 0
COL. 31
ROW
BUFFERS
VDD
DO
VSS
OPERATIONAL MODES
INPUTS
OUTPUT
MODE
READ/WRITE
R/W
CHIP-SELECT
CS
DATA OUTPUT DO
Standby
X
1
High Impedance
Write
0
0
High Impedance
Read
1
0
Contents of Addressed Call
X = Don’t Care Logic 1 = High Logic 0 = Low
6-6
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