NEC PD78058FY(A) - Manual (Page 470)

470
CHAPTER 19 SERIAL INTERFACE CHANNEL 2
[Example]
INTSER is Generated
7 Clocks (MIN.) of CPU Clock
(Time from Interrupt Request to Servicing)
Instructions for
2205 clocks (MIN.)
of CPU clock are
required.
UART Receive Error Interrupt (INTSER) Servicing
EI
RETI
MOV A,RXB
Main Processing