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RL78/G1A CHAPTER 24 OPTION BYTE
Figure 24-2. Format of User Option Byte (000C1H/010C1H) (1/2)
Address: 000C1H/010C1H
Note
7 6 5 4 3 2 1 0
VPOC2 VPOC1 VPOC0 1 LVIS1 LVIS0 LVIMDS1 LVIMDS0
<R>
• LVD setting (interrupt & reset mode)
Detection voltage Option byte setting value
VLVDH VLVDL Mode setting
Rising
edge
Falling
edge
Falling
edge
VPOC2 VPOC1 VPOC0 LVIS1 LVIS0
LVIMDS1 LVIMDS0
1.77 V 1.73 V 1 0
1.88 V 1.84 V 0 1
2.92 V 2.86 V
1.63 V 0 0
0 0
1.98 V 1.94 V 1 0
2.09 V 2.04 V 0 1
3.13 V 3.06 V
1.84 V 0 1
0 0
2.61 V 2.55 V 1 0
2.71 V 2.65 V
2.45 V 1 0
0 1
2.92 V 2.86 V 1 0
3.02 V 2.96 V
2.75 V
0
1 1
0 1
1 0
−
Setting of values other than above is prohibited.
<R>
• LVD setting (reset mode)
Detection voltage Option byte setting value
VLVD Mode setting
Rising edge Falling edge
VPOC2 VPOC1 VPOC0 LVIS1 LVIS0
LVIMDS1 LVIMDS0
1.67 V 1.63 V 0 0 1 1
1.77 V 1.73 V 0 0 1 0
1.88 V 1.84 V 0 1 1 1
1.98 V 1.94 V 0 1 1 0
2.09 V 2.04 V 0 1 0 1
2.50 V 2.45 V 1 0 1 1
2.61 V 2.55 V 1 0 1 0
2.71 V 2.65 V 1 0 0 1
2.81 V 2.75 V 1 1 1 1
2.92 V 2.86 V 1 1 1 0
3.02 V 2.96 V 1 1 0 1
3.13 V 3.06 V
0
0 1 0 0
1 1
−
Setting of values other than above is prohibited.
Note Set the same value as 000C1H to 010C1H when the boot swap operation is used because 000C1H is replaced
by 010C1H.
Remarks 1. For details on the LVD circuit, see CHAPTER 21 VOLTAGE DETECTOR.
2. The detection voltage is a typical value. For details, see 29.6.4 or 30.6.4 LVD circuit characteristics.
(Cautions are listed on the next page.)
R01UH0305EJ0200 Rev.2.00 795
Jul 04, 2013