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HCS12 数据表(PDF) 136 Page - Freescale Semiconductor, Inc

部件名 HCS12
功能描述  HCS12 Microcontrollers
PDF  452 Pages
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制造商  FREESCALE [Freescale Semiconductor, Inc]
网页  http://www.freescale.com
标志 FREESCALE - Freescale Semiconductor, Inc

HCS12 数据表(HTML) 136 Page - Freescale Semiconductor, Inc

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S12CPUV2 Reference Manual, Rev. 4.0
136
Freescale Semiconductor
Operation:
(PC) + $0002 + Rel
⇒ PC
Description:
Unconditional branch to an address calculated as shown in the expression.
Rel is a relative offset stored as a two’s complement number in the second
byte of the branch instruction.
Execution time is longer when a conditional branch is taken than when it is
not, because the instruction queue must be refilled before execution
resumes at the new address. Since the BRA branch condition is always
satisfied, the branch is always taken, and the instruction queue must always
be refilled.
See 3.8 Relative Addressing Mode for details of branch execution.
BRA
Branch Always
BRA
CCR Details:
S
X
HIN
Z
V
C
––––––––
Source Form
Address
Mode
Object Code
Access Detail
HCS12
M68HC12
BRA rel8
REL
20 rr
PPP
PPP



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