3069RF-ZTAT Datasheet, PDF (109/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

Bit 3—User Bit Enable (UE): Selects whether to use the UI bit in CCR as a user bit or an
interrupt mask bit.
Bit 3
UE
0
1
Description
UI bit in CCR is used as interrupt mask bit
UI bit in CCR is used as user bit
(Initial value)
Bit 2—NMI Edge Select (NMIEG): Selects the NMI input edge.
Bit 2
NMIEG
0
1
Description
Interrupt is requested at falling edge of NMI input
Interrupt is requested at rising edge of NMI input
(Initial value)
5.2.2 Interrupt Priority Registers A and B (IPRA, IPRB)
IPRA and IPRB are 8-bit readable/writable registers that control interrupt priority.
Rev. 5.0, 09/04, page 87 of 978