CDP1805 Intersil Corporation, CDP1805 Datasheet - Page 2

• Manufacturer Part Number: CDP1805
• Description: CMOS 8-Bit Microprocessor with On-Chip RAM and Counter/Timer
• Manufacturer: Intersil Corporation

Pinouts
† ME for CDP1805AC
Schematic
V
DD
IN
OUT
for CDP1806AC
CLOCK
CLEAR
BUS 7
BUS 6
BUS 5
BUS 4
BUS 3
BUS 2
BUS 1
BUS 0
WAIT
MRD
SC1
SC0
V
N2
N1
N0
SS
Q
BUS0 - BUS7
†
CDP1851
10
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
PIO
CDP1805AC, CDP1806AC
FIGURE 1. TYPICAL CDP1805AC, CDP1806AC SMALL MICROPROCESSOR SYSTEM
(PDIP, SBDIP)
TOP VIEW
CONTROL
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
V
XTAL
DMA IN
DMA OUT
INTERRUPT
MWR
TPA
TPB
MA7
MA6
MA5
MA4
MA3
MA2
MA1
MA0
EF1
EF2
EF3
EF4
RAM, COUNTER/TIMER
DD
CDP1805AC, CDP1806AC
CDP1805AC WITH
CDP1806AC WITH
COUNTER/TIMER
BUS0 - BUS7
MA0 - MA7
MWR
MRD
TPA
ME
8-BIT DATA BUS
2
(CDP1805AC ONLY)
BUS 7
BUS 6
BUS 5
BUS 4
BUS 3
BUS 2
BUS 1
BUS 0
MRD
SC0
TPA
NC
ADDRESS BUS
BUS0 - BUS7
1K BYTE ROM
MA0 - MA7
7
8
9
10
11
12
13
14
15
16
17
CDP1833
18
6
(PLCC, PACKAGE TYPE Q)
CDP1805AC, CDP1806AC
19
5
20 21 22 23 24 25 26
4
CEO
3
TOP VIEW
2
1
44 43 42 41 40
MRD
MWR
CS
CDP1806AC ONLY)
27
32 BYTE RAM
28
(USED WITH
BUS0-BUS4
MA0-MA4
CDP1824
39
38
37
36
35
34
33
32
31
30
29
MWR
TPA
TPB
MA7
MA6
NC
MA5
MA4
MA3
MA2
MA1