S3P852B Datasheet, PDF (351/383 Pages) Samsung semiconductor – 8-BIT CMOS MICROCONTROLLERS

S3C852B/P852B (Preliminary Spec)
SAM8 INSTRUCTION EXECUTION TIMING DIAGRAMS
EXTERNAL INTERFACE
M1
T1
T2
M2
T1
T2
M1
T1
T2
CPU CLK
Address
A0-A15
A0-A15
Data
D0-D7
D0-D7
D0-D7
WR
Fetch
Instruction
Fetch 1st Byte of
Next Instruction
RD
Figure 16-9. External Bus Timing Diagram for 1-Byte Fetch Instructions
M1
T1
T2
M2
T1
T2
M1
T1
T2
CPU CLK
Address
A0-A15
A0-A15
A0-A15
Data
D0-D7
D0-D7
D0-D7
WR
Fetch 1st Byte of
Fetch
Fetch
Next Instruction
1st Byte
2nd Byte
RD
Figure 16-10. External Bus Timing Diagram for 2-Byte Fetch Instructions
16-15