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HCS12 데이터시트(PDF) 102 Page - Freescale Semiconductor, Inc

부품명 HCS12
상세설명  HCS12 Microcontrollers
PDF  452 Pages
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제조업체  FREESCALE [Freescale Semiconductor, Inc]
홈페이지  http://www.freescale.com
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HCS12 데이터시트(HTML) 102 Page - Freescale Semiconductor, Inc

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S12CPUV2 Reference Manual, Rev. 4.0
102
Freescale Semiconductor
Operation:
(B) + (Y)
⇒ Y
Description:
Adds the 8-bit unsigned content of accumulator B to the content of index
register Y considering the possible carry out of the low-order byte of Y;
places the result in Y. The content of B is not changed.
This mnemonic is implemented by the LEAY B,Y instruction. The LEAY
instruction allows A, B, D, or a constant to be added to Y. For compatibility
with the M68HC11, the mnemonic ABY is translated into the LEAY B,Y
instruction by the assembler.
ABY
Add Accumulator B to Index Register Y
ABY
CCR Details:
S
X
HIN
Z
V
C
––––––––
Source Form
Address
Mode
Object Code
Access Detail
HCS12
M68HC12
ABY
translates to... LEAY B,Y
IDX
19 ED
Pf
PP
(1)
1. Due to internal M68HC12CPU requirements, the program word fetch is performed twice to the same address during this
instruction.



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