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8085AH
8085AH/8085AH-2/8085AH-1
J\
A8-15
T"'-
V
/1
ADO·7
'J
/).
ALE
)
A
"-
RD
"-
Vee
WR
101M
"-
-
Vee
"-
ClK
RESET
OUl
r
"-
I---
READY
i
I
I.
i
TIMER
• IN
~~~~--~--~+--I-V~-vee
I·
RESET
WR
RD
ALE
101M
8156H
[RAM + I/O + COUNTERITIMER]
A8-
AD
_
101
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I
'Z
7A1'~'\707
CE
MALE
RDlowelKRST!RDY
8355 [ROM + I/O]
OR
8755A [PROM + I/O]
8 8
Figure 8. MCS-85® Minimum System (Memory Mapped I/O)
-
x,
x
2
RESET IN
-
TRAP
HOLD
-
RSTl
HlDA
I--
-
RST6
SOD
I--
-
RST5
8085AH
510_
-
INTR
s,l--
-
INTA
RESET
Sol--
ADDRI
OUT
ADDR
DATA
ALE RD
iNA
101M
ROY
ClK
;>.
181
181
8212
f-
t-.
V
1161
~
~
1-1----
A
"
I
001
liT
-v
I
101M
ICSI
iNA
RD
DATA
STANDARD
MEMORY
ADDR
lesl
ClK
.
RESET
101M
leSI
liD
POR
WR
RJj
DATA
TS,
OlS
~
STANDARD
liD
ADDR
Vee
Vee
Vee
Figure 9. MCS-85® System (Using Standard Memories)
6-17
AFN-01835C