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HCS12 Datasheet(PDF) 169 Page - Freescale Semiconductor, Inc

Part # HCS12
Description  HCS12 Microcontrollers
PDF  452 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

HCS12 Datasheet(HTML) 169 Page - Freescale Semiconductor, Inc

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Glossary
S12CPUV2 Reference Manual, Rev. 4.0
Freescale Semiconductor
169
Operation:
(Y) – $0001
⇒ Y
Description:
Subtract one from index register Y. LEAY –1,Y can produce the same result,
but LEAY does not affect the Z bit. Although the LEAY instruction is more
flexible, DEY requires only one byte of object code.
Only the Z bit is set or cleared according to the result of this operation.
DEY
Decrement Index Register Y
DEY
CCR Details:
S
X
HIN
Z
V
C
–––––
∆
––
Z: Set if result is $0000; cleared otherwise
Source Form
Address
Mode
Object Code
Access Detail
HCS12
M68HC12
DEY
INH
03
O
O



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