C509-L_97 SIEMENS [Siemens Semiconductor Group], C509-L_97 Datasheet - Page 55

• Manufacturer Part Number: C509-L_97
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Figure 4-1
External Program Memory Execution
Semiconductor Group
a)
ALE
PSEN
RD
P2
P0
b)
ALE
PSEN
RD
P2
P0
INST.
INST.
IN
IN
S1
S1
PCL OUT
PCL OUT
valid
OUT
OUT
PCL
valid
PCL
S2
S2
One Machine Cycle
One Machine Cycle
PCH
OUT
PCH
OUT
S3
S3
INST.
INST.
IN
IN
S4
S4
PCL OUT
DPL or Ri
valid
valid
OUT
PCL
S5
S5
PCH
OUT
S6
S6
INST.
4-3
DPH OUT OR
IN
P2 OUT
S1
S1
PCL OUT
valid
OUT
PCL
S2
S2
One Machine Cycle
One Machine Cycle
DATA
IN
PCH
OUT
S3
S3
INST.
IN
S4
S4
PCL OUT
PCL OUT
External Bus Interface
valid
valid
S5
S5
OUT
OUT
PCL
PCL
PCH
OUT
PCH
OUT
S6
S6
INST.
INST.
MCT03220
IN
IN
(A)
without
MOVX
(B)
with
MOVX
1997-10-01
C509-L