HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 100
HD6433044
Manufacturer Part Number
HD6433044
Description
(HD64 Series) Hitachi Single-Chip Microcomputer
Manufacturer
Hitachi Semiconductor
Datasheet
1.HD6433044.pdf
(867 pages)
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Interrupt Priority Register A (IPRA): IPRA is an 8-bit readable/writable register in which
interrupt priority levels can be set.
IPRA is initialized to H'00 by a reset and in hardware standby mode.
Bit
Initial value
Read/Write
Priority level A7
Selects the priority level of IRQ interrupt requests
IPRA7
R/W
7
0
Priority level A6
Selects the priority level of IRQ interrupt requests
IPRA6
R/W
6
0
Priority level A5
Selects the priority level of IRQ and IRQ interrupt requests
IPRA5
R/W
5
0
Priority level A4
Selects the priority level of IRQ and IRQ
interrupt requests
0
86
IPRA4
R/W
4
0
Priority level A3
Selects the priority level of WDT and
refresh controller interrupt requests
1
IPRA3
R/W
3
0
Priority level A2
Selects the priority level of
ITU channel 0 interrupt requests
2
IPRA2
R/W
2
0
Priority level A1
Selects the priority level
of ITU channel 1
interrupt requests
4
3
IPRA1
R/W
1
0
Priority
level A0
Selects the
priority level
of ITU
channel 2
interrupt
requests
5
IPRA0
R/W
0
0
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