Datasheet

Section 13 Timer RA
Page 414 of 982 REJ09B0465-0300 Rev. 3.00
Sep 17, 2010
H8S/20103, H8S/20203, H8S/20223, H8S/20115, H8S/20215, H8S/20235 Group
0 = Contents of TRATR (upper) and TRAPRE (lower) registers
H'FFFF
n
H'0000
Counter value (hexadecimal)
"1"
"0"
"1"
"0"
"1"
"0"
"1"
"0"
"1"
"0"
TSTART in TRACR
Measurement pulse
(TRAIO pin input)
TRAIF in TRAIR
TEDGF in TRACR
TUNDF in TRACR
Set to 0 by a program.
Set to 0 by a program.
Set to 1 by a program.
Start measurement.
Start Start
Measurement is stopped. Measurement is stopped.
Underflow
When a high level is specified for measuring the pulse width (TEDGSEL = 1).
Set to 0 by a program.
Figure 13.3 Operation Example of Pulse Width Measurement Mode