r5f21368sdfp Renesas Electronics Corporation., r5f21368sdfp Datasheet - Page 122

• Manufacturer Part Number: r5f21368sdfp
• Description: Renesas Mcu R8c Family / R8c/3xt-a Series
• Manufacturer: Renesas Electronics Corporation.

Under development
R8C/36T-A Group
R01UH0240EJ0001 Rev.0.01
Apr 28, 2011
9.2.8
After Reset
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 00014h
Set the PRC0 bit in the PRCR register to 1 (write enabled) before rewriting the FRA2 register.
Symbol
Bit
Symbol
FRA20
FRA21
FRA22
FRA24
FRA25
High-Speed On-Chip Oscillator Control Register 2 (FRA2)
—
—
—
Preliminary document
Specifications in this document are tentative and subject to change.
b7
—
0
High-speed on-chip oscillator division
ratio select bits
Reserved
High-speed on-chip oscillator
frequency switch bits
Nothing is assigned. The write value must be 0. The read value is 0.
b6
—
0
Bit Name
FRA25
b5
0
FRA24
b4
0
b3
—
Set to 0.
0
b2 b1 b0
b5 b4
0 0 0: Divide-by-2 mode
0 0 1: Divide-by-3 mode
0 1 0: Divide-by-4 mode
0 1 1: Divide-by-5 mode
1 0 0: Divide-by-6 mode
1 0 1: Divide-by-7 mode
1 1 0: Divide-by-8 mode
1 1 1: Divide-by-9 mode
0 0: 40 MHz
0 1: 36.864 MHz
1 0: 32 MHz
1 1: The same applies as with the setting of
00b
FRA22
b2
0
FRA21
Function
b1
0
9. Clock Generation Circuit
FRA20
b0
0
Page 91 of 725
R/W
R/W
R/W
R/W
R/W
R/W
—