HD6433044 Datasheet, PDF (100/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

Interrupt Priority Register A (IPRA): IPRA is an 8-bit readable/writable register in which
interrupt priority levels can be set.
Bit
Initial value
Read/Write
7
IPRA7
0
R/W
6
IPRA6
0
R/W
5
IPRA5
0
R/W
4
IPRA4
0
R/W
3
IPRA3
0
R/W
2
IPRA2
0
R/W
1
IPRA1
0
R/W
0
IPRA0
0
R/W
Priority
level A0
Selects the
priority level
of ITU
channel 2
interrupt
requests
Priority level A1
Selects the priority level
of ITU channel 1
interrupt requests
Priority level A2
Selects the priority level of
ITU channel 0 interrupt requests
Priority level A3
Selects the priority level of WDT and
refresh controller interrupt requests
Priority level A4
Selects the priority level of IRQ₄ and IRQ ₅
interrupt requests
Priority level A5
Selects the priority level of IRQ₂ and IRQ₃ interrupt requests
Priority level A6
Selects the priority level of IRQ₁ interrupt requests
Priority level A7
Selects the priority level of IRQ ₀ interrupt requests
IPRA is initialized to H'00 by a reset and in hardware standby mode.
86