UPD17708 datasheet(182/358 Pages) RENESAS

182 / 358 page

µPD17704, 17705, 17707, 17708, 17709

180

13.5.2 Clock selection and start/stop control blocks

The clock selection block selects a basic clock to operate timer 2 counter.

Four types of basic clocks can be selected by using the TM2CK1 and TM2CK0 flags.

The start/stop block starts or stops the basic clock input to timer 2 by using the TM2EN flag.

Figure 13-22 shows the configuration and function of each flag.

13.5.3 Count block

The count block counts the basic clock with timer 2 counter, reads the count value, and issues an interrupt

request when its count value coincides with the value of the timer 2 modulo register.

The timer 2 counter can be reset by the TM2RES flag.

The timer 2 counter is automatically reset when its value coincides with the value of the timer 2 modulo

The value of the timer 2 counter can be read via data buffer.

Data can be written to the value of the timer 2 modulo register via data buffer.

Figure 13-22 shows the configuration of timer 2 counter clock selection register.

Figure 13-23 shows the configuration of the timer 2 counter.

Figure 13-24 shows the configuration of the timer 2 modulo register.

UPD17708 Datasheet(PDF) 182 Page - Renesas Technology Corp