3. Exception Handling
Rev.3.00 Jul. 19, 2007 page 77 of 532
REJ09B0397-0300
Bit 7—Timer A Interrupt Enable (IENTA):
Bit 7 enables or disables timer A overflow interrupt
requests.
Bit 7: IENTA
Description
0
Disables timer A interrupts
(initial value)
1
Enables timer A interrupts
Bit 6—SCI1 Interrupt Enable (IENS1):
Bit 6 is used in the H8/3857 Group to enable or disable
SCI1 transfer complete interrupt requests. In the H8/3854 Group, this bit must always be cleared
to 0.
Bit 6: IENS1
Description
0
Disables SCI1 interrupts
(initial value)
1
Enables SCI1 interrupts
Bit 5—Wakeup Interrupt Enable (IENWP):
Bit 5 enables or disables WKP
7
to WKP
0
interrupt
requests.
Bit 5: IENWP
Description
0
Disables interrupt requests from
WKP
7
to
WKP
0
(initial
value)
1
Enables interrupt requests from
WKP
7
to
WKP
0
Bits 4, 3, 1, and 0—IRQ
4
, IRQ
3
, IRQ
1
, and IRQ
0
Interrupt Enable (IEN4, IEN3, IEN1,
IEN0):
Bits 4 to 0 enable or disable
IRQ
4
,
IRQ
3
,
IRQ
1
, and
IRQ
0
interrupt requests.
Bit n: IENn
Description
0
Disables interrupt request
IRQn
(initial
value)
1
Enables interrupt request
IRQn
Note: n = 4, 3, 1, or 0
Bit 2—IRQ
2
Interrupt Enable (IEN2):
Bit 2 is used in the H8/3857 Group to enable or disable
IRQ
2
interrupt requests. In the H8/3854 Group, this bit must always be cleared to 0.
Bit 2: IEN2
Description
0
Disables interrupt request
IRQ
2
(initial value)
1
Enables interrupt request
IRQ
2
Summary of Contents for F-ZTAT H8 Series
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