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HCS12 Datasheet(PDF) 141 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) 141 Page - Freescale Semiconductor, Inc

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S12CPUV2 Reference Manual, Rev. 4.0
Freescale Semiconductor
141
Operation:
(SP) – $0002
⇒ SP
RTNH : RTNL ⇒ M(SP) : M(SP+1)
(PC) + Rel
⇒ PC
Description:
Sets up conditions to return to normal program flow, then transfers control
to a subroutine. Uses the address of the instruction after the BSR as a return
address.
Decrements the SP by two, to allow the two bytes of the return address to
be stacked.
Stacks the return address (the SP points to the high-order byte of the return
address).
Branches to a location determined by the branch offset.
Subroutines are normally terminated with an RTS instruction, which
restores the return address from the stack.
BSR
Branch to Subroutine
BSR
CCR Details:
S
X
HIN
Z
V
C
––––––––
Source Form
Address
Mode
Object Code
Access Detail
HCS12
M68HC12
BSR rel8
REL
07 rr
SPPP
PPPS



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