hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 123

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Interrupt Enable Register 1 (IENR1)
IENR1 is an 8-bit read/write register that enables or disables interrupt requests.
Bit 7—Timer A Interrupt Enable (IENTA)
Bit 7 enables or disables timer A overflow interrupt requests.
Bit 7
IENTA
0
1
Bit 6—Reserved
Bit 6 is reserved: it can only be written with 0.
Bit 5—Wakeup Interrupt Enable (IENWP)
Bit 5 enables or disables WKP
Bit 5
IENWP
0
1
Bits 4 and 3—IRQ
Bits 4 and 3 enable or disable IRQ
Bit n
IENn
0
1
Bit
Initial value
Read/Write
Description
Disables timer A interrupt requests
Enables timer A interrupt requests
Description
Disables
Enables
Description
Disables interrupt requests from pin
Enables interrupt requests from pin
IENTA
R/W
4
7
0
and IRQ
W K P
W K P
7
7
to
to
7
3


W
6
W K P
to WKP
Interrupt Enable (IEN4 and IEN3)
W K P
4
and IRQ
0
0
IENWP
interrupt requests
interrupt requests
R/W
0
5
0
interrupt requests.
3
interrupt requests.
IEN4
R/W
I R Q n
I R Q n
4
0
Rev. 7.00 Mar 10, 2005 page 81 of 652
IEN3
R/W
3
0
IENEC2
Section 3 Exception Handling
R/W
2
0
IEN1
R/W
REJ09B0042-0700
1
0
(initial value)
(initial value)
(initial value)
(n = 4 or 3)
IEN0
R/W
0
0