NEC PD78214 - Manual (Page 130)

101
Chapter 6 Real-Time Output Function
6
Fig. 6-5 Real-Time Output Port Operation Timing (Controlling 2 Channels Independently of Each Other)
8-bit timer/
counter 1
Timer starts
0H
INTC11
interrupt request
INTC10
interrupt request
CPU operation
D01
D11
D00 D01 D02 D03
D04 D03 D02
D12 D13
D12 D13 D10 D11
D14
CR11
CR10
CR11
CR11
CR11
CR10
CR10
FFH
Buffer register
(P0H)
Buffer register
(P0L)
Output latches
(P07-P04)
Output latches
(P03-P00)
The contents of the buffer register and compare register are rewritten by software processing or macro
service (see Section 12.4).