2013 Microchip Technology Inc.
Advance Information
DS33030A-page 89
PIC24FV16KM204 FAMILY
REGISTER 8-1:
SR: ALU STATUS REGISTER
U-0
U-0
U-0
U-0
U-0
U-0
U-0
R-0, HSC
—
—
—
—
—
—
—
DC
(
bit 15
bit 8
R/W-0, HSC R/W-0, HSC R/W-0, HSC
R-0, HSC
R/W-0, HSC R/W-0, HSC R/W-0, HSC R/W-0, HSC
IPL2
(
IPL1
(
IPL0
)
RA
)
N
OV
)
Z
)
C
(
bit 7
bit 0
Legend:
HSC = Hardware Settable/Clearable bit
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
x = Bit is unknown
bit 15-9
Unimplemented:
Read as ‘
0
’
bit 7-5
IPL<2:0>:
CPU Interrupt Priority Level Status bits
(
111
= CPU Interrupt Priority Level is 7 (15); user interrupts are disabled
110
= CPU Interrupt Priority Level is 6 (14)
101
= CPU Interrupt Priority Level is 5 (13)
100
= CPU Interrupt Priority Level is 4 (12)
011
= CPU Interrupt Priority Level is 3 (11)
010
= CPU Interrupt Priority Level is 2 (10)
001
= CPU Interrupt Priority Level is 1 (9)
000
= CPU Interrupt Priority Level is 0 (8)
Note 1:
See
for the description of these bits, which are not dedicated to interrupt control functions.
2:
The IPL<2:0> bits are concatenated with the IPL3 bit (CORCON<3>) to form the CPU Interrupt Priority
Level. The value in parentheses indicates the Interrupt Priority Level if IPL3 =
1
.
3:
The IPLx Status bits are read-only when NSTDIS (INTCON1<15>) =
1
.
Note:
Bit 8 and bits 4 through 0 are described in
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