04.03.2013 Views

RL78/D1A User's Manual: Hardware - Renesas

RL78/D1A User's Manual: Hardware - Renesas

RL78/D1A User's Manual: Hardware - Renesas

SHOW MORE
SHOW LESS

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

Under development<br />

Preliminary document<br />

Specifications in this document are tentative and subject to change.<br />

<strong>RL78</strong>/<strong>D1A</strong> CHAPTER 24 VOLTAGE DETECTOR<br />

24.4.2 When used as interrupt mode<br />

When starting operation<br />

Specify the operation mode (the interrupt mode (LVIMDS1, LVIMDS0 = 0, 1)) and the detection voltage (VLVD)<br />

by using the option byte 000C1H/020C1H.<br />

Start in the following initial setting state.<br />

Set bit 7 (LVISEN) of the voltage detection register (LVIM) to 0 (disable rewriting of voltage detection level<br />

register (LVIS))<br />

When the option byte LVIMDS1 is clear to 0 and LVIMDS0 is set to 1, the initial value of the LVIS register is<br />

set to 00H.<br />

Bit 7 (LVIMD) is 0 (interrupt mode).<br />

Bit 0 (LVILV) is 1 (low-voltage detection level: VLVD).<br />

Figure 24-5 shows the timing of the internal interrupt signal generated by the voltage detector.<br />

R01UH0317EJ0004 Rev. 0.04 1122<br />

Feb. 22, 2013

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!