M16C65 Datasheet, PDF (392/829 Pages) Renesas Technology Corp – RENESAS MCU M16C FAMILY / M16C/60

Under development
M16C/65 Group
Preliminary Specification
This is a preliminary specification and is subject to change.
18. Timer B
Count source
(Undefined
value)
Count
start
0000h
(Undefined value)
Transfer to the TBi register
(Measured value 1)
(Measured
value 2)
TBiS bit
in TABSR register
Set to 0000h automatically
Transfer to
the TBi register
(Measured value 3)
Transfer to
the TBi register
(Measured value 4)
Set to 0000h automatically
TBiIN input
TBi register
IR bit
in TBiIC register
Undefined value
Undefined value
Measured
value 1
Measured value 2
Interrupt request
by an effective edge of the measured pulse
Measured
value 3
Measured
value 4
i = 0 to 5
Set to 0 by an interrupt request acknowledgement or by a program.
The above timing diagram applies when the register bits are set as follows:
-Bits MR1 to MR0 in the TBiMR register = 00b (measurement between a falling edge and the next falling edge of
measured pulse)
-Bits PPWFS12 to PPWFS10 and PPWFS22 to PPWFS20 in registers PPWFS1 and PPWFS2
= 0 (measurement result stored in the TBi register)
-No initial value is set while timer Bi is stopped.
Figure 18.6 Operation Example in Pulse Period Measurement Mode
REJ09B0484-0030 Rev.0.30 Sep 09, 2008
Page 357 of 791