R01UH0822EJ0100 Rev.1.00
Page 211 of 1041
Jul 31, 2019
RX13T Group
14. Interrupt Controller (ICUb)
14.2.11
Non-Maskable Interrupt Enable Register (NMIER)
Note 1. A 1 can be written to this bit only once, and subsequent write accesses are no longer enabled.
NMIEN Bit (NMI Pin Interrupt Enable)
This bit enables the NMI pin interrupt.
A 1 can be written to this bit only once, and subsequent write accesses are no longer enabled.
Writing 0 to this bit is disabled.
OSTEN Bit (Oscillation Stop Detection Interrupt Enable)
This bit enables the oscillation stop detection interrupt.
A 1 can be written to this bit only once, and subsequent write accesses are no longer enabled.
Writing 0 to this bit is disabled.
IWDTEN Bit (IWDT Underflow/Refresh Error Enable)
This bit enables the IWDT underflow/refresh error interrupt.
A 1 can be written to this bit only once, and subsequent write accesses are no longer enabled.
Writing 0 to this bit is disabled.
LVD1EN Bit (Voltage Monitoring 1 Interrupt Enable)
This bit enables the voltage monitoring 1 interrupt.
A 1 can be written to this bit only once, and subsequent write accesses are no longer enabled.
Writing 0 to this bit is disabled.
LVD2EN Bit (Voltage Monitoring 2 Interrupt Enable)
This bit enables the voltage monitoring 2 interrupt.
A 1 can be written to this bit only once, and subsequent write accesses are no longer enabled.
Writing 0 to this bit is disabled.
Address(es): ICU.NMIER 0008 7581h
b7
b6
b5
b4
b3
b2
b1
b0
—
—
LVD2E
N
LVD1E
N
IWDTE
N
—
OSTEN NMIEN
Value after reset:
0
0
0
0
0
0
0
0
Bit
Symbol
Bit Name
Description
R/W
b0
NMI Pin Interrupt Enable
0: NMI pin interrupt is disabled
1: NMI pin interrupt is enabled
R/(W)
*
b1
Oscillation Stop Detection Interrupt
Enable
0: Oscillation stop detection interrupt is disabled
1: Oscillation stop detection interrupt is enabled
R/(W)
*
b2
—
Reserved
This bit is read as 0. The write value should be 0.
R/W
b3
IWDT Underflow/Refresh Error
Enable
0: IWDT underflow/refresh error interrupt is disabled
1: IWDT underflow/refresh error interrupt is enabled
R/(W)
*
b4
Voltage Monitoring 1 Interrupt
Enable
0: Voltage monitoring 1 interrupt is disabled
1: Voltage monitoring 1 interrupt is enabled
R/(W)
*
b5
Voltage Monitoring 2 Interrupt
Enable
0: Voltage monitoring 2 interrupt is disabled
1: Voltage monitoring 2 interrupt is enabled
R/(W)
*
b7, b6
—
Reserved
These bits are read as 0. The write value should be 0.
R/W