MSM80C85ARS Datasheet

  • MSM80C85ARS

  • IC,MICROPROCESSOR,8-BIT,CMOS,DIP,40PIN,PLASTIC

  • 919.96KB

  • OKI

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隆 Semiconductor
MSM80C85AHRS/GS/JS
FUNCTIONAL BLOCK DIAGRAM
RST
INTR
INTA
5.5 6.5
7.5 TRAP
SID
SOD
Interrupt Control
Serial I/O Control
8-Bit Internal Data Bus
Accumulator
(8)
Temporary Register
(8)
Flag (5)
Flip Flops
Instruction
Register (8)
Arithmetic
Logic Unit
ALU(8)
Instruction
Decoder
And
Machine
Cycle
Encoding
B REG (8)
D REG (8)
H REG (8)
C REG (8)
E REG (8)
C REG (8)
Register
Array
Stack Pointer (16)
Program Counter (16)
Incrementer/Decrementer
Address Latch (16)
Power
Supply
+5V
GND
Power Down
X
1
X
2
CLK
GEN
Timing And Control
Control
Status
DMA
Reset
Address Buffer (8)
Data/Address
Buffer (8)
CLK
OUT
READY
RD WR
ALE
S0
S1 IO /
M
HOLD HLDA
RESET IN
RESET OUT
A
15
- A
8
Address Bus
AD
7
- AD
0
Address/Data Bus
2/29

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