HD6432138SW datasheet(376/1061 Pages) RENESAS

376 / 1061 page

Section 12 8-Bit Timers

Rev. 4.00 Jun 06, 2006 page 322 of 1004

REJ09B0301-0400

12.2.10

Time Constant Register C (TCORC) [TMRX Additional Function]

R/W

Bit

Initial value

Read/Write

TCORC is an 8-bit readable/writable register. The sum of the contents of TCORC and TICR is

continually compared with the value in TCNT. When a match is detected, a compare-match C

signal is generated. Note, however, that comparison is disabled during the T2 state of a TCORC

write cycle and a TICR input capture cycle.

TCORC is initialized to H'FF by a reset and in hardware standby mode.

The TCORC function is used in timer connection. For details, see section 13, Timer Connection

[H8S/2138 Group].

12.2.11

Input Capture Registers R and F (TICRR, TICRF) [TMRX Additional Functions]

Bit

Initial value

Read/Write

TICRR and TICRF are 8-bit read-only registers. When the ICST bit in TCONRI is set to 1,

TICRR and TICRF capture the contents of TCNT successively on the rise and fall of the external

reset input. When one capture operation ends, the ICST bit is cleared to 0.

TICRR and TICRF are each initialized to H'00 by a reset and in hardware standby mode.

The TICRR and TICRF functions are used in timer connection. For details, see section 12.3.6,

Input Capture Operation, and section 13, Timer Connection [H8S/2138 Group].

HD6432138SW Datasheet(PDF) 376 Page - Renesas Technology Corp