Configuration Of Watch Timer; Register Controlling Watch Timer - NEC 78K0 User Manual

10.2 Configuration of Watch Timer

The watch timer consists of the following hardware.
Counter
Prescaler
Control register

10.3 Register Controlling Watch Timer

The watch timer is controlled by the watch timer operation mode register (WTM).
• Watch timer operation mode register (WTM)
This register sets the watch timer count clock, enables/disables operation, prescaler interval time, and 5-bit
counter operation control.
WTM is set by a 1-bit or 8-bit memory manipulation instruction.
RESET input clears WTM to 00H.
CHAPTER 10 WATCH TIMER
Table 10-3. Watch Timer Configuration
Item
5 bits × 1
11 bits × 1
Watch timer operation mode register (WTM)
*
User's Manual U15947EJ2V0UD
Configuration
257