mc68hc908jb16 Freescale Semiconductor, Inc, mc68hc908jb16 Datasheet - Page 77
mc68hc908jb16
Manufacturer Part Number
mc68hc908jb16
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC908JB16.pdf
(332 pages)
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6.4 CPU Registers
6.4.1 Accumulator
MC68HC908JB16
Freescale Semiconductor
—
Rev. 1.1
Figure 6-1
the memory map.
The accumulator is a general-purpose 8-bit register. The CPU uses the
accumulator to hold operands and the results of arithmetic/logic
operations.
Reset:
Read:
Write:
15
15
15
Bit 7
shows the five CPU registers. CPU registers are not part of
Central Processor Unit (CPU)
H
6
Figure 6-2. Accumulator (A)
Figure 6-1. CPU Registers
7
7
V 1 1 H I N Z C
5
X
Unaffected by reset
4
0
0
0
0
0
CONDITION CODE REGISTER (CCR)
CARRY/BORROW FLAG
ZERO FLAG
NEGATIVE FLAG
INTERRUPT MASK
HALF-CARRY FLAG
TWO’S COMPLEMENT OVERFLOW FLAG
ACCUMULATOR (A)
INDEX REGISTER (H:X)
STACK POINTER (SP)
PROGRAM COUNTER (PC)
3
Central Processor Unit (CPU)
2
1
Technical Data
Bit 0
77
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