NEC 78K0S/KB1+ User Manual page 97

Figure 6-10. Control Register Settings for Interval Timer Operation
7 6 5
CRC00 0 0 0
ES110 ES100 ES010
PRM00 0/1 0/1 0/1
7 6 5
TMC00 0 0 0
Remark 0/1: Setting 0 or 1 allows another function to be used simultaneously with the interval timer. See the
description of the respective control registers for details.
f
XP
2
f /2
XP
8
f /2
XP
Noise
TI000/INTP0/P30
eliminator
f
XP
Note OVF00 is set to 1 only when 16-bit timer capture/compare register 000 (CR000) is set to FFFFH.
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
(a) Capture/compare control register 00 (CRC00)
4 3 CRC002 CRC001 CRC000
0 0 0/1 0/1
(b) Prescaler mode register 00 (PRM00)
ES000 3 2 PRM001 PRM000
0/1 0 0 0/1
(c) 16-bit timer mode control register 00 (TMC00)
4 TMC003 TMC002 TMC001 OVF00
0 1 1 0/1
Figure 6-11. Interval Timer Configuration Diagram
16-bit timer capture/compare
register 000 (CR000)
16-bit timer counter 00
(TM00)
User's Manual U17446EJ3V1UD
0
CR000 used as compare register
0/1
Selects count clock.
Setting invalid (setting "10" is prohibited.)
Setting invalid (setting "10" is prohibited.)
0
Clears and starts on match between TM00 and CR000.
INTTM000
Note
OVF00
Clear
circuit
97