W77C32_07 Datasheet, PDF (35/78 Pages) Winbond – 8-BIT MICROCONTROLLER

W77C32/W77C032A
CLK
ALE
PSEN
AD7-0
PORT 2
Instruction Fetch
C1
C2
C3
C4
Operand Fetch
C1
C2
C3
C4
PC
OP-CODE
Address A15-8
PC+1
OPERAND
Address A15-8
Figure 4: Two Cycle Instruction Timing
Instruction Fetch
Operand Fetch
Operand Fetch
C1 C2 C3 C4 C1
C2 C3 C4 C1
C2 C3 C4
CLK
ALE
PSEN
AD7-0
A7-0 OP-CODE
A7-0 OPERAND
A7-0 OPERAND
PORT 2
Address A15-8
Address A15-8
Address A15-8
Figure 5: Three Cycle Instruction Timing
Instruction Fetch
Operand Fetch
Operand Fetch
Operand Fetch
C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4 C1 C2 C3 C4
CLK
ALE
PSEN
AD7-0
A7-0 OP-CODE
A7-0 OPERAND
A7-0 OPERAND
A7-0 OPERAND
Port 2
Address A15-8
Address A15-8
Address A15-8
Address A15-8
Figure 6: Four Cycle Instruction Timing
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Publication Release Date: February 1, 2007
Revision A8