Name: Renesas RL78 Series
Brand: Renesas
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RL78/F13, F14 CHAPTER 9 REAL-TIME CLOCK

R01UH0368EJ0210 Rev.2.10 682

Dec 10, 2015

9.4.5 1 Hz output of real-time clock

Figure 9-26. 1 Hz Output Setting Procedure

Note The timer input select register 2 (TIS2) is only available in the RL78/F14 products with 48, 64, or 80 pins and 128

Kbytes to 256 Kbytes of code flash memory or with 100 pins and 64 Kbytes to 256 Kbytes of code flash memory.

Caution First set the RTCEN bit to 1 while oscillation of the input clock (f

RTC) is stable.

Start

PMxx = 0 Sets the port mode register so that the pin is an output.

Pxx = 0 Sets the port register for the output of 0.

TIS14 = 0

TIS17, TIS16 = 0, 0 or 1, 0

TIS22 = 0

Note

TIS23 = 0

Note

RCLOE1 = 1

Enables output of the RTC1HZ pin (1 Hz).

RTCE = 1 Starts counter operation.

Output start from RTC1HZ pin

RTCE = 0

Stops counter operation.

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