Renesas M16C/62P Series Hardware Manual page 179

M16C/62P Group (M16C/62P, M16C/62PT)
Count source
Measurement pulse
Reload register
transfer timing
Timing at which counter
reaches "0000h"
TBiS bit
IR bit in TBiIC
register
MR3 bit in TBiMR
register
The TB0S to TB2S bits are assigned to the bit 5 to bit 7 in the TABSR register, and the TB3S to TB5S bits
are assigned to the bit 5 to bit 7 in the TABSR register.
i = 0 to 5
NOTES :
1. Counter is initialized at completion of measurement.
2. Timer has overflowed.
3. This timing diagram is for the case where the MR1 to MR0 bits in the TBiMR register are "00b" (measure the
interval from falling edge to falling edge of the measurement pulse).
Figure 15.22 Operation Timing when Measuring a Pulse Period
Count source
Measurement pulse
Reload register
transfer timing
Timing at which counter
reaches "0000h"
TBiS bit
IR bit in TBiIC
register
MR3 bit in TBiMR
register
i = 0 to 5
NOTES :
1. Counter is initialized at completion of measurement.
2. Timer has overflowed.
3. This timing diagram is for the case where the MR1 to MR0 bits in the TBiMR register are "10b" (measure the
interval from a falling edge to the next rising edge and the interval from a rising edge to the next falling edge of the
measurement pulse).
Figure 15.23 Operation Timing when Measuring a Pulse Width
Rev.2.41 Jan 10, 2006
REJ09B0185-0241
http://www.xinpian.net
"H"
"L"
counter
"1"
"0"
"1"
"0"
Set to "0" upon accepting an interrupt request or by writing in
program
"1"
"0"
"H"
"L"
counter
"1"
"0"
"1"
"0"
Set to "0" upon accepting an interrupt request or by
"1"
writing in program
"0"
The TB0S to TB2S bits are assigned to the bit 5 to bit 7 in the TABSR register, and the TB3S to TB5S
bits are assigned to the bit 5 to bit 7 in the TABSR register.
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Transfer
(indeterminate value)
(NOTE 1)
Transfer Transfer Transfer
(indeterminate (measured value) (measured
value) value)
(NOTE 1)
(NOTE 1) (NOTE 1)
Transfer
(measured value)
(NOTE 1) (NOTE 2)
Transfer
(measured value)
(NOTE 1) (NOTE 2)
010-62245566 13810019655
15. Timers