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RL78/D1A User's Manual: Hardware - Renesas

RL78/D1A User's Manual: Hardware - Renesas

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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 />

Supply voltage (VDD)<br />

Figure 24-6. Timing of Voltage Detector Reset Signal and Interrupt Signal Generation<br />

(Option Byte LVIMDS1, LVIMDS0 = 1, 0) (2/2)<br />

When a condition of VDD is VDD < VLVIH after releasing the mask,<br />

a reset is generated because ofLVIMD = 1 (reset mode).<br />

VLVDH<br />

VLVDL<br />

LVIMK flag<br />

(set by software)<br />

Operation status<br />

LVIF flag<br />

LVISEN flag<br />

(set by software)<br />

LVIOMSK flag<br />

LVIMD flag<br />

LVILV flag<br />

LVIRF flag<br />

LVD reset signal<br />

POR reset signal<br />

Internal reset signal<br />

INTLVI<br />

LVIIF flag<br />

RESET<br />

Note 1<br />

H<br />

Cleared by<br />

software<br />

Normal<br />

operation<br />

Cleared by software<br />

Save<br />

processing RESET Normal operation RESET<br />

Cleared by<br />

software Note 2<br />

(Notes and Remark are listed on the next page.)<br />

Save processing<br />

Cleared by<br />

software Note 3<br />

R01UH0317EJ0004 Rev. 0.04 1127<br />

Feb. 22, 2013<br />

W<br />

Time<br />

Cleared<br />

Cleared<br />

Note 3

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