HD6412340 HITACHI [Hitachi Semiconductor], HD6412340 Datasheet - Page 136

• Manufacturer Part Number: HD6412340
• Description: H8S/2345 F-ZTAT Hardware Manual
• Manufacturer: HITACHI [Hitachi Semiconductor]

Figure 5.4 shows a block diagram of the priority decision circuit.
(1) Interrupt Acceptance Control
In interrupt control mode 0, interrupt acceptance is controlled by the I bit in CCR.
Table 5.6 shows the interrupts selected in each interrupt control mode.
Table 5.6
Interrupt Control Mode
0
2
Legend
* : Don't care
Interrupt source
Interrupts Selected in Each Interrupt Control Mode (1)
Figure 5.4 Block Diagram of Interrupt Control Operation
Interrupt Mask Bits
I
0
1
*
Interrupt
control
mode 0
Interrupt control mode 2
IPR
mask control
acceptance
Interrupt
control
8-level
I2 to I0
I
Default priority
determination
Selected Interrupts
All interrupts
NMI interrupts
All interrupts
Vector number
117