RL78/G1H CHAPTER 26 OPTION BYTE
R01UH0575EJ0120 Rev. 1.20 Page 804 of 920
Dec 22, 2016
Figure 26 - 6 Format of Option Byte (000C2H/010C2H)
Note Set the same value as 000C2H to 010C2H when the boot swap operation is used because 000C2H is
replaced by 010C2H.
Caution 1. Be sure to set bit 5 to 1.
Caution 2. The operating frequency range and operating voltage range depend on each operating mode of the
flash memory. See 31.4 AC Characteristics for details.
Address: 000C2H/010C2H
Note
76543210
CMODE1 CMODE0 1 0 FRQSEL3 FRQSEL2 FRQSEL1 FRQSEL0
CMODE1 CMODE0
Setting of flash operation mode
Operating
Frequency Range
Operating Voltage Range
1 0 LS (low-speed main) mode 1 to 8 MHz 1.8 to 3.6 V
1 1 HS (high-speed main) mode 1 to 16 MHz 2.4 to 3.6 V
1 to 32 MHz 2.7 to 3.6 V
Other than above Setting prohibited
FRQSEL3 FRQSEL2 FRQSEL1 FRQSEL0
Frequency of the high-speed on-chip oscillator clock
f
IH
1000 32 MHz
0000 24 MHz
1001 16 MHz
0001 12 MHz
1010 8 MHz
0010 6 MHz
1011 4 MHz
0011 3 MHz
1100 2 MHz
1101 1 MHz
Other than above Setting prohibited
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