CHAPTER 7 INTERRUPTION/EXCEPTION PROCESSING FUNCTION
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User’s Manual U14359EJ4V0UM
7.3.5 Interrupt mask registers 0 to 3 (IMR0 to IMR3)
These registers set the interrupt mask state for the maskable interrupts. The xxMKn bit of the IMR0 to IMR3
registers is equivalent to the xxMKn bit of the xxICn register.
The IMRm register (m = 0 to 3) can be read/written in 16-bit units.
If the higher 8 bits of the IMRm register are used as an IMRmH register and the lower 8 bits as an IMRmL register,
these registers can be read/written in 8-bit or 1-bit units.
Bits 15 to 1 of the IMR3 register (bits 7 to 0 of the IMR3H register and bits 7 to 1 of the IMR3L register) are fixed to
1. If these bits are not 1, the operation cannot be guaranteed.
Caution
The device file defines the xxMKn bit of the xxICn register as a reserved word. If a bit is
manipulated using the name of xxMKn, the contents of the xxICn register, instead of the IMRm
register, are rewritten (as a result, the contents of the IMRm register are also rewritten).
Address
FFFFF100H
15
P10MK3
IMR0
14
P10MK2
13
P10MK1
12
P10MK0
11
P03MK1
10
P03MK0
9
P02MK1
8
P02MK0
7
P01MK1
6
P01MK0
5
P00MK1
4
P00MK0
3
OVMK3
2
OVMK2
1
OVMK1
0
OVMK0
After reset
FFFFH
Address
FFFFF102H
15
CMMK3
IMR1
14
CMMK2
13
CMMK1
12
CMMK0
11
P13MK3
10
P13MK2
9
P13MK1
8
P13MK0
7
P12MK3
6
P12MK2
5
P12MK1
4
P12MK0
3
P11MK3
2
P11MK2
1
P11MK1
0
P11MK0
After reset
FFFFH
Address
FFFFF104H
15
STMK2
IMR2
14
SRMK2
13
SEMK2
12
CSIMK2
11
STMK1
10
SRMK1
9
SEMK1
8
CSIMK1
7
STMK0
6
SRMK0
5
SEMK0
4
CSIMK0
3
DMAMK3
2
DMAMK2
1
DMAMK1
0
DMAMK0
After reset
FFFFH
Address
FFFFF106H
15
1
IMR3
14
1
13
1
12
1
11
1
10
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
ADMK
After reset
FFFFH
Bit position
Bit name
Function
15 to 0
(IMR0 to 2),
0 (IMR3)
xxMKn
Mask Flag
Interrupt mask flag
0: Interrupt servicing enabled
1: Interrupt servicing disabled (pending)
Remark
xx: Identification name of each peripheral unit (OV, P00 to P03, P10 to P13, CM, DMA, CSI, SE, SR,
ST, and AD).
n: Peripheral unit number (None, or 0 to 3)
Содержание V850E/MA1
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