upd78f0134hgka1-9et-a Renesas Electronics Corporation., upd78f0134hgka1-9et-a Datasheet - Page 161
upd78f0134hgka1-9et-a
Manufacturer Part Number
upd78f0134hgka1-9et-a
Description
8-bit Single-chip Microcontrollers
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD78F0134HGKA1-9ET-A.pdf
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(1) Pulse width measurement with free-running counter and one capture register
Remark 0/1: Setting 0 or 1 allows another function to be used simultaneously with pulse width measurement.
When 16-bit timer counter 0n (TM0n) is operated in free-running mode, and the edge specified by prescaler mode
register 0n (PRM0n) is input to the TI00n pin, the value of TM0n is taken into 16-bit timer capture/compare
register 01n (CR01n) and an external interrupt request signal (INTTM01n) is set.
Specify both the rising and falling edges of the TI00n pin by using bits 4 and 5 (ES0n0 and ES0n1) of PRM0n.
Sampling is performed using the count clock selected by PRM0n, and a capture operation is only performed
when a valid level of the TI00n pin is detected twice, thus eliminating noise with a short pulse width.
Figure 6-22. Control Register Settings for Pulse Width Measurement with Free-Running Counter
n = 0:
n = 0, 1:
See the description of the respective control registers for details.
TMC0n
PRM0n
CRC0n
and One Capture Register (When TI00n and CR01n Are Used)
PD78F0132H
PD78F0133H, 78F0134H, 78F0136H, 78F0138H, 78F0138HD
ES1n1
CHAPTER 6 16-BIT TIMER/EVENT COUNTERS 00 AND 01
0/1
7
0
7
0
(a) 16-bit timer mode control register 0n (TMC0n)
(b) Capture/compare control register 0n (CRC0n)
ES1n0
0/1
6
0
6
0
(c) Prescaler mode register 0n (PRM0n)
ES0n1
5
0
5
0
1
User’s Manual U16899EJ3V0UD
ES0n0
4
0
4
0
1
TMC0n3
0
3
0
3
0
TMC0n2
CRC0n2
1
1
2
0
TMC0n1
CRC0n1
PRM0n1
0/1
0/1
0/1
OVF0n
CRC0n0
PRM0n0
0/1
0
0
Free-running mode
CR00n used as compare register
CR01n used as capture register
Selects count clock (setting “11” is prohibited).
Specifies both edges for pulse width detection.
Setting invalid (setting “10” is prohibited.)
161
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