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MC68HC08AS20FN bảng dữ liệu(PDF) 73 Page - Freescale Semiconductor, Inc

tên linh kiện MC68HC08AS20FN
Giải thích chi tiết về linh kiện  M68HC08 Microcontrollers
PDF  386 Pages
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nhà sản xuất  FREESCALE [Freescale Semiconductor, Inc]
Trang chủ  http://www.freescale.com
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MC68HC08AS20FN bảng dữ liệu(HTML) 73 Page - Freescale Semiconductor, Inc

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MC68HC08AS20 — Rev. 4.1
Advance Information
Freescale Semiconductor
73
7.4 CPU Registers
Figure 7-1 shows the five CPU registers. CPU registers are not part of
the memory map.
Figure 7-1. CPU Registers
7.4.1 Accumulator
The accumulator is a general-purpose 8-bit register. The CPU uses the
accumulator to hold operands and the results of arithmetic/logic
operations.
ACCUMULATOR (A)
INDEX REGISTER (H:X)
STACK POINTER (SP)
PROGRAM COUNTER (PC)
CONDITION CODE REGISTER (CCR)
CARRY/BORROW FLAG
ZERO FLAG
NEGATIVE FLAG
INTERRUPT MASK
HALF-CARRY FLAG
TWO’S COMPLEMENT OVERFLOW FLAG
V1 1 H I N Z C
H
X
0
0
0
0
7
15
15
15
70
Bit 7
654321
Bit 0
Read:
Write:
Reset:
Unaffected by Reset
Figure 7-2. Accumulator (A)



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