NEC PD17062 - Manual (Page 109)

109
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PD17062
11.2.4 Interrupt Permission Flags (IP
×××
)
The interrupt permission flags set interrupt permissions for various types of peripheral hardware.
If these flags are set to 1 and the corresponding interrupt request flags are also set, the corresponding
interrupt requests are output.
Because these flags correspond one-to-one to the flags in the interrupt permission register of the control
register, they are read and written via the window register.
These flags are reset to 0 at power-on reset, clock stop, or CE reset.
11.2.5 Vector Address Generator (VAG)
When interrupts from various types of peripheral hardware are accepted, the vector address generator
generates the branch address (vector address) of the program memory for the source of the accepted interrupt.
Table 11-1 lists the vector addresses corresponding to the interrupt sources.
Table 11-1 Interrupt Vector Addresses
Interrupt source Vector address
INT NC pin 04H
Timer 03H
V
SYNC
pin 02H
Serial interface 01H