HD6432345 Datasheet, PDF (126/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

5.2.2 Interrupt Priority Registers A to K (IPRA to IPRK)
Bit
:
7
6
5
4
3
2
1
0
—
IPR6 IPR5 IPR4
—
IPR2 IPR1 IPR0
Initial value:
0
1
1
1
0
1
1
1
R/W
:
—
R/W R/W R/W
—
R/W
R/W
R/W
The IPR registers are eleven 8-bit readable/writable registers that set priorities (levels 7 to 0) for
interrupts other than NMI.
The correspondence between IPR settings and interrupt sources is shown in table 5.3.
The IPR registers set a priority (level 7 to 0) for each interrupt source other than NMI.
The IPR registers are initialized to H'77 by a reset and in hardware standby mode.
Bits 7 and 3—Reserved: Read-only bits, always read as 0.
Table 5.3 Correspondence between Interrupt Sources and IPR Settings
Bits
Register
6 to 4
2 to 0
IPRA
IRQ0
IRQ1
IPRB
IRQ2
IRQ3
IRQ4
IRQ5
IPRC
IRQ6
IRQ7
DTC
IPRD
Watchdog timer
—*
IPRE
—*
A/D converter
IPRF
TPU channel 0
TPU channel 1
IPRG
TPU channel 2
TPU channel 3
IPRH
TPU channel 4
TPU channel 5
IPRI
8-bit timer channel 0
8-bit timer channel 1
IPRJ
—*
SCI channel 0
IPRK
SCI channel 1
—*
Note: * Reserved bits. May be read or written, but the setting is ignored.
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