r5s72060w200fpv Renesas Electronics Corporation., r5s72060w200fpv Datasheet - Page 98

• Manufacturer Part Number: r5s72060w200fpv
• Description: 32-bit Risc Microcomputer Superhtm Risc Engine Family / Sh7200 Series
• Manufacturer: Renesas Electronics Corporation.

Section 3 Clock Pulse Generator (CPG)
3.3
Table 3.2 shows the relationship between the combinations of the mode control pins (MD_CLK2
and MD_CLK0) and the clock operating modes. Table 3.3 shows the usable frequency ranges in
the clock operating modes.
Table 3.2
• Mode 2
• Mode 7
Rev. 2.00 Dec. 09, 2005 Page 74 of 1152
REJ09B0191-0200
Mode
2
7
The frequency of the signal received from the EXTAL pin or crystal resonator LSI is
quadrupled by the PLL circuit 2 before it is supplied as the clock signal. This enables to use
the external clock of lower frequency. Either a crystal resonator with a frequency in the range
from 10 to 16.67 MHz or an external signal in the same frequency range input on the EXTAL
pin may be used. The frequency range of CKIO is from 40 to 66.67 MHz.
In mode 7, the CKIO pin functions as an input pin and draws an external clock signal. The
PLL circuit 1 shapes its waveform and the setting of the frequency control register multiplies
its frequency before the clock enters the LSI. For reduced current and hence power
consumption, pull up the EXTAL pin and open the XTAL pin when the LSI is used in mode 7.
MD_CLK2
0
1
Clock Operating Modes
Pin Values
Clock Operating Modes
MD_CLK0
0
1
Source
EXTAL or
crystal resonator
CKIO
Clock I/O
Output
CKIO

PLL Circuit 2
On/Off
ON (×4)
OFF
PLL Circuit 1
On/Off
ON (×1, 2, 3, 4) (EXTAL or crystal
ON (×1, 2, 3, 4,
6, 8)
CKIO Frequency
resonator) ×4
(CKIO)