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HCS12 Datasheet(PDF) 147 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) 147 Page - Freescale Semiconductor, Inc

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S12CPUV2 Reference Manual, Rev. 4.0
Freescale Semiconductor
147
Operation:
0
⇒ I bit
Description:
Clears the I mask bit. This instruction is assembled as ANDCC #$EF. The
ANDCC instruction can be used to clear any combination of bits in the CCR
in one operation.
When the I bit is cleared, interrupts are enabled. There is a 1-cycle (bus
clock) delay in the clearing mechanism for the I bit so that, if interrupts were
previously disabled, the next instruction after a CLI will always be executed,
even if there was an interrupt pending prior to execution of the CLI
instruction.
CLI
Clear Interrupt Mask
CLI
CCR Details:
S
X
HIN
Z
V
C
–––
0
––––
I:
0; cleared
Source Form
Address
Mode
Object Code
Access Detail
HCS12
M68HC12
CLI
translates to... ANDCC #$EF
IMM
10 EF
P
P



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