ADC0804(2002) View Datasheet(PDF) - Intersil
Part Name
Description
View to exact match
ADC0804 Datasheet PDF : 17 Pages
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RD
RD
2
IORQ
ADC0803-
ADC0804
WR
WR
3
74C32
FIGURE 22. MAPPING THE A/D AS AN
I/O DEVICE FOR USE
WITH THE Z-80 CPU
ADC0803, ADC0804
IRQ (4)† [D] ††
ANALOG
INPUTS
150pF
10K
ADC0803 - ADC0804
1 CS
V+ 20
2 RD
3 WR
CLK R 19
DB0 18 LSB
4 CLK IN DB1 17
5 INTR
DB2 16
6 VIN (+) DB3 15
7 VIN (-) DB4 14
8 AGND
9 VREF/2
10 DGND
DB5 13
DB6 12
DB7 11 MSB
1
2
6
3
1/2 DM8092 4
5
R/W (34) [6]
+
10µF
ABC
5V (8) 1 2 3
D0 (33) [31]
D1 (32) [29]
D2 (31) [K]
D3 (30) [H]
D4 (29) [32]
D5 (28) [30]
D6 (27) [L]
D7 (26) [J]
A12 (22) [34]
A13 (23) [N]
A14 (24) [M]
A15 (25) [33]
VMA (5) [F]
† Numbers in parentheses refer to MC6800 CPU Pinout.
†† Numbers or letters in brackets refer to standard MC6800 System Common Bus Code.
FIGURE 23. ADC080X TO MC6800 CPU INTERFACE
ANALOG
INPUTS
150pF
18
CB1
19
CB2
10K
ADC0803 - ADC0804
1 CS
V+ 20
5V
2 RD CLK R 19
3 WR
DB0 18 LSB
10
4 CLK IN DB1 17
11
5 INTR
DB2 16
12
6 VIN (+) DB3 15
13
7 VIN (-) DB4 14
14
8 AGND DB5 13
15
9 VREF/2 DB6 12
16
10 DGND DB7 11 MSB
17
MC6820
(MCS6520)
PIA
PB0
PB1
PB2
PB3
PB4
PB5
PB6
PB7
FIGURE 24. ADC080X TO MC6820 PIA INTERFACE
15
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