M32C80 Datasheet, PDF (174/352 Pages) Renesas Technology Corp – 16/32-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M32C/80 SERIES

M32C/80 Group
14. Timer (Timer B)
Count source
Pulse to be measured ^"H"
"L"
Timing to transfer value
from counter to reload
register
Timing that the counter
reaches "000016"
TBiS bits in the
"1"
TABSR and TBSR
registers
"0"
IR bit in the TBilC
"1"
register
"0"
MR3 bit in the TBiMR ^"1"
register
"0"
Transferred
(indeterminate value)
Transferred
(measured value)
(Note 1)
(Note 1)
(Note 2)
Set to "0" by an interrupt request acknowledgement or by program
i=0 to 5
NOTES:
1. The counter is reset when a measurement is completed.
2. The timer counter overflows.
Figure 14.23 Operation Example in Pulse Period Measurement Mode
Count source
"H"
Pulse to be measured
"L"
Timing to transfer value
from counter to reload
register
Timing that the counter
reaches "000016"
Transferred
(indeterminate
value)
Transferred
(measured value)
Transferred Transferred
(measured (measured value)
value)
(Note 1)
(Note 1)
(Note 1) (Note 1)
(Note 2)
TBiS bits in the
"1"
TABSR and TBSR
registers
"0"
IR bit in the TBilC
"1"
register
"0"
MR3 bit in the TBiMR “1”
register
“0”
Set to "0" by an interrupt request acknowledgement or by program.
i=0 to 5
NOTES:
1. The counter is reset when a measurement is completed.
2. The timer counter overflows.
Figure 14.24 Operation Example in Pulse Width Measurement Mode
Rev. 1.00 Nov. 01, 2005 Page 155 of 330
REJ09B0271-0100