HD6433044 Hitachi Semiconductor, HD6433044 Datasheet - Page 99

• Manufacturer Part Number: HD6433044
• Description: (HD64 Series) Hitachi Single-Chip Microcomputer
• Manufacturer: Hitachi Semiconductor

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
Bit 2—NMI Edge Select (NMIEG): Selects the NMI input edge.
Bit 2
NMIEG
0
1
5.2.2 Interrupt Priority Registers A and B (IPRA, IPRB)
IPRA and IPRB are 8-bit readable/writable registers that control interrupt priority.
Description
UI bit in CCR is used as interrupt mask bit
UI bit in CCR is used as user bit
Description
Interrupt is requested at falling edge of NMI input
Interrupt is requested at rising edge of NMI input
85
(Initial value)
(Initial value)