66
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
IRQn
(initial value)
1
Enables interrupt requests from pin
IRQn
(n = 4 to 0)
Note:
IRQ
0
is an internal signal that performs interfacing to the FLEX™ decoder incorporated in
the chip.
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 H8/3935
Страница 1: ......
Страница 2: ......
Страница 4: ......
Страница 24: ...12 ...
Страница 53: ...41 Notation op Operation field 15 0 8 7 op op Figure 2 10 Block Data Transfer Instruction Code ...
Страница 96: ...84 ...
Страница 142: ...130 ...
Страница 144: ...132 ...
Страница 252: ...240 ...
Страница 326: ...314 ...
Страница 340: ...328 ...
Страница 520: ...508 ...