Format Of Real-Time Output Port Mode Register (Rtpm) - NEC V850/SA1 mPD703015 Preliminary User's Manual

(1) Real-time output port mode register (RTPM)
This register selects real-time output port mode or port mode in 1-bit units.
RTPM is set by a 1-bit or 8-bit memory manipulation instruction.
RESET input clears RTPM to 00H.
Figure 13-3. Format of Real-Time Output Port Mode Register (RTPM)
After reset: 00H R/W
7
RTPM RTPM7
RTPMn
0
1
Cautions 1. Set a port pin used as a real-time output port pin in the output mode.
2. Data cannot be set to the output latch of a port pin set as a real-time output port pin. To set
an initial value, therefore, set the data to the output latch before setting the port pin in the
real-time output port mode.
324
CHAPTER 13 REAL-TIME OUTPUT FUNCTION (RTO)
Address: FFFFF3A4H
6 5
RTPM6 RTPM5 RTPM4
Selects Real-Time Output Port (n = 0 to 7)
Port mode
Real-time output port mode
4 3 2
RTPM3 RTPM2
1 0
RTPM1 RTPM0