SH7018 datasheet(175/431 Pages) RENESAS

175 / 431 page

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8.8.4

Overview of Initialization Procedures and Mode Transitions in Case of Error

During Operation, Etc.

• When making a transition to a mode (Normal, PWM1, PWM2) in which the pin output level is

selected by the timer I/O control register (TIOR) setting, initialize the pins by means of a TIOR

setting.

• In PWM mode 1, since a waveform is not output to the TIOC*B pin, setting TIOR will not

initialize the pins. If initialization is required, carry it out in normal mode, then switch to PWM

mode 1.

• In PWM mode 2, since a waveform is not output to the cycle register pin, setting TIOR will

not initialize the pins. If initialization is required, carry it out in normal mode, then switch to

PWM mode 2.

• In normal mode or PWM mode 2, if TGRC and TGRD operate as buffer registers, setting

TIOR will not initialize the buffer register pins. If initialization is required, clear buffer mode,

carry out initialization, then set buffer mode again.

• In PWM mode 1, if either TGRC or TGRD operates as a buffer register, setting TIOR will not

initialize the TGRC pin. To initialize the TGRC pin, clear buffer mode, carry out initialization,

then set buffer mode again.

Note:

An asterisk in this section represents the channel number.

Pin initialization procedures are described below for the numbered combinations in table 8.9. The

active level is assumed to be low.

SH7018 Datasheet(PDF) 175 Page - Renesas Technology Corp