Section 3 Exception Handling
Rev. 6.00 Aug 04, 2006 page 100 of 680
REJ09B0145-0600
Bits 4 to 0:
IRQ
4
to IRQ
0
interrupt enable (IEN4 to IEN0)
Bits 4 to 0 enable or disable IRQ
4
to IRQ
0
interrupt requests.
Bit n
IENn
Description
0
Disables interrupt requests from pin
IRQ
n
(initial value)
1
Enables interrupt requests from pin
IRQ
n
(n = 4 to 0)
3. Interrupt Enable Register 2 (IENR2)
Bit
Initial value
Read/Write
7
IENDT
0
R/W
6
IENAD
0
R/W
5
—
0
R/W
4
IENTG
0
R/W
3
IENTFH
0
R/W
0
IENEC
0
R/W
2
IENTFL
0
R/W
1
IENTC
0
R/W
IENR2 is an 8-bit read/write register that enables or disables interrupt requests.
Bit 7:
Direct transfer interrupt enable (IENDT)
Bit 7 enables or disables direct transfer interrupt requests.
Bit 7
IENDT
Description
0
Disables direct transfer interrupt requests
(initial value)
1
Enables direct transfer interrupt requests
Bit 6:
A/D converter interrupt enable (IENAD)
Bit 6 enables or disables A/D converter interrupt requests.
Bit 6
IENAD
Description
0
Disables A/D converter interrupt requests
(initial value)
1
Enables A/D converter interrupt requests
Bit 5:
Reserved bit
Bit 5 is a readable/writable reserved bit. It is initialized to 0 by a reset.
Содержание H8/38342
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