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MSM80C85AHJS 数据表(PDF) 10 Page - OKI electronic componets

部件名 MSM80C85AHJS
功能描述  8-Bit CMOS MICROPROCESSOR
PDF  29 Pages
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制造商  OKI [OKI electronic componets]
网页  http://www.oki.com
标志 OKI - OKI electronic componets

MSM80C85AHJS 数据表(HTML) 10 Page - OKI electronic componets

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¡ Semiconductor
MSM80C85AHRS/GS/JS
0
T2
¥
¥
TWAIT
T3
¥
¥
T4
T1
¥
T5
¥
¥
¥
¥
TS
¥
TS
¥
¥
¥
1
1
1
¥
¥
¥
1
1
1
0
0
0
0
1 (1)
0
A8 – A15
AD0 – AD7
RD, WR
INTA
ALE
Machine State
Status & Buses
Control
¥
T6
TRESET
TS
TS
THALT
THOLD
TS
TS
TS
TS
TS
1
TS
TS
TS
1
1
1
1
0
0
0
¥
¥
¥
1
¥
1
¥
¥
¥
0 (2)
¥
0 (2)
S1, S0
IO/
M
1
¥
0
¥
0 (2)
TS
TS
TS
Table 3 MSM80C85AH Machine State Chart
0 = Logic "0"
1 = Logic "1"
TS = High Impedance
¥ = Unspecified
Notes: (1) ALE not generated during 2nd and 3rd machine cycles of DAD instruction.
(2) IO/M = 1 during T4 - T6 of INA machine cycle.
T1
PCH (High Order Address)
(PC+1)H
A8-15
T2
T3
T4
T1
T2
T3
T1
T2
M3
M2
M1
T3
T
AD0-7
ALE
CLK
RD
WR
STATUS
IO/M
IO Port
IO Port
PCL
S1S0(Fetch)
10 (Read)
01 Write
11
(Low Order
Address)
Data from Memory
(Instruction)
Data from Memory
(I/O Port Address)
Data to Memory
or Peripheral
(PC+1)L1
Figure 5 MSM80C85AH Basic System Timing



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