r4f2426 Renesas Electronics Corporation., r4f2426 Datasheet - Page 1122

• Manufacturer Part Number: r4f2426
• Description: 16-bit Single-chip Microcomputer H8s Family / H8s/2400 Series
• Manufacturer: Renesas Electronics Corporation.

Section 23 Clock Pulse Generator
23.1.2
PLLCR sets the frequency multiplication factor used by the system-clock PLL circuit.
Care must be taken when writing to this register. For details, see section 23.3, System-Clock PLL
Circuit and Divider.
Rev. 1.00 Sep. 19, 2008 Page 1094 of 1270
REJ09B0466-0100
Bit
7 to 4
3
2
1
0
Bit Name
—
—
—
STC1
STC0
PLL Control Register (PLLCR)
Initial Value
All 0
0
0
0
0
R/W
—
R/W
—
R/W
R/W
Description
Reserved
These bits are always read as 0 and cannot be
modified.
Reserved
This bit can be read from or written to. However,
the write value should always be 0.
Reserved
This bit is always read as 0 and cannot be
modified.
Frequency Multiplication Factor for System-
Clock PLL Circuit and System Clock Divider
Setting
The STC bits specify the frequency
multiplication factor and dividing ratio with
respect to the oscillator frequency.
00: × 1
01: × 2
10: Setting prohibited
11: 1/2