Timer Counters (Tcnt) - Renesas F-ZTAT H8 Series Hardware Manual

Section 10 16-Bit Integrated Timer Unit (ITU)
Bit 1—Output Level Select 4 (OLS4): Selects output levels in complementary PWM mode and
reset-synchronized PWM mode.
Bit 1: OLS4 Description
0 TIOCA
1 TIOCA
Bit 0—Output Level Select 3 (OLS3): Selects output levels in complementary PWM mode and
reset-synchronized PWM mode.
Bit 0: OLS3 Description
0 TIOCB
1 TIOCB
10.2.7

Timer Counters (TCNT)

TCNT is a 16-bit counter. The ITU has five TCNTs, one for each channel.
Channel Abbreviation
0 TCNT0
1 TCNT1
2 TCNT2
3 TCNT3
4 TCNT4
Bit 15
Initial value 0
Read/Write R/W
Each TCNT is a 16-bit readable/writable register that counts pulse inputs from a clock source. The
clock source is selected by bits TPSC2 to TPSC0 in TCR.
TCNT0 and TCNT1 are up-counters. TCNT2 is an up/down-counter in phase counting mode and
an up-counter in other modes. TCNT3 and TCNT4 are up/down-counters in complementary PWM
mode and up-counters in other modes.
Rev. 7.00 Sep 21, 2005 page 338 of 878
REJ09B0259-0700
, TIOCA , and TIOCB
3 4
, TIOCA , and TIOCB
3 4
, TOCXA , and TOCXB
3 4
, TOCXA , and TOCXB
3 4
Function
Up-counter
Phase counting mode: up/down-counter
Other modes: up-counter
Complementary PWM mode: up/down-counter
Other modes: up-counter
14 13 12 11 10
0 0 0 0
R/W R/W R/W R/W R/W
outputs are inverted
4
outputs are not inverted
4
outputs are inverted
4
outputs are not inverted
4
9 8 7 6
0 0 0 0 0
R/W R/W R/W R/W
(Initial value)
(Initial value)
5 4 3 2
0 0 0 0
R/W R/W R/W R/W R/W
1 0
0 0
R/W