NEC mPD780973 Series Preliminary User's Manual page 101

8-bit single-chip microcontrollers
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ES21 ES20 ES11
ES10 ES01
Noise rejection
TI02/P42
circuit
Noise rejection
TI01/P41
circuit
Noise rejection
TI00/P40
circuit
TPO/P81/S19
(1) Pulse width measurement
TM0 can measure the pulse width of an externally input signal.
(2) Divided output of input pulse
The frequency of an input signal can be divided and the divided signal can be output.
CHAPTER 7 16-BIT TIMER 0 TM0
Figure 7-1. Timer 0 (TM0) Block Diagram
Internal bus
Prescaler mode
register (PRM0)
ES00 PRM01 PRM00
CRC01
CRC00
f
/8
X
f
/16
X
f
/32
X
f
/64
X
ES21, ES20
Prescaler
Edge detection
1, 1/2, 1/4, 1/8
ES11, ES10
Edge detection
ES01, ES00
Edge detection
TPOE
Internal bus
Capture pulse control
register (CRC0)
TMC02 TPOE
16-bit timer register (TM0)
16-bit capture register (CR02)
circuit
16-bit capture register (CR01)
circuit
16-bit capture register (CR00)
circuit
16-bit timer mode control
register (TMC0)
INTOVF
INTTM02
INTTM01
INTTM00
101

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