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FM8P51
Rev1.2 Mar 15, 2005
P.10/FM8P51
FEELING
TECHNOLOGY
FIGURE 2.2: Loading of PC in Different Situations
Situation 1: GOTO Instruction
PCH
PCL
11 10 9 8 7
0
PC
-
-
-
-
-
-
STATUS
Situation 2: CALL Instruction
PCH
PCL
11 10 9 8 7
0
PC
-
-
-
-
-
-
STATUS
Situation 3: RETIA, RETFIE, or RETURN Instruction
PCH
PCL
11 10 9 8 7
0
PC
-
-
-
-
-
-
STATUS
Situation 4: Instruction with PCL as destination (excluding TBL instruction)
PCH
PCL
11 10 9 8 7
0
PC
00
-
-
-
-
-
-
STATUS
Situation 5: TBL Instruction
PCH
PCL
11 10 9 8 7
0
PC
-
-
-
-
-
-
STATUS
STACK<11:0>
Opcode<9:0>
PG<1:0>
STACK<11:0>
Opcode<9:0>
PG<1:0>
PG<1:0>
ALU result<7:0>
or Opcode<7:0>
PCH<9:8> bits are unchanged
PG<1:0>
ALU result<7:0>
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