MC68HC705P9CDW FREESCALE [Freescale Semiconductor, Inc], MC68HC705P9CDW Datasheet - Page 45

• Manufacturer Part Number: MC68HC705P9CDW
• Description: Microcontrollers
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

4.5 Arithmetic/Logic Unit
MC68HC705P9 — Rev. 4.0
MOTOROLA
15
15
0
0
14
14
0
0
13
13
0
0
12
12
CPU CONTROL UNIT
The arithmetic/logic unit (ALU) performs the arithmetic, logic, and
manipulation operations decoded from the instruction set by the CPU
control unit. The ALU produces the results called for by the program and
sets or clears status and control bits in the condition code register
(CCR).
0
CARRY/BORROW FLAG
11 10
11 10
Freescale Semiconductor, Inc.
0
Figure 4-1. CPU Programming Model
HALF-CARRY FLAG
INTERRUPT MASK
For More Information On This Product,
0
NEGATIVE FLAG
9
9
0
ZERO FLAG
8
8
0
Central Processor Unit (CPU)
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7
7
7
7
7
1
1
6
6
6
6
6
1
1
5
5
5
5
5
1
H
4
4
4
4
4
3
3
3
3
3
I
N
2
2
2
2
2
Z
1
1
1
1
1
C
0
0
0
0
0
ARITHMETIC/LOGIC UNIT
INDEX REGISTER (X)
STACK POINTER (SP)
PROGRAM COUNTER (PC)
CONDITION CODE REGISTER (CCR)
ACCUMULATOR (A)
Central Processor Unit (CPU)
Arithmetic/Logic Unit
Technical Data
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