r5s72060w200fpv Renesas Electronics Corporation., r5s72060w200fpv Datasheet - Page 93

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

This LSI has a clock pulse generator (CPG) that generates an internal clock (Iφ), a peripheral clock
(Pφ), a bus clock (Bφ), and an MTU clock (Mφ). The CPG consists of a crystal oscillator, PLL
circuits, and divider circuits.
3.1
• Two clock operating modes
• Four clocks generated independently
• Frequency change function
• Power-down mode control
The mode is selected from among the two clock operating modes by the selection of the
following three conditions: the frequency-divisor in use, whether the PLLs are on or off, and
whether the internal crystal resonator or the input on the external clock-signal line is used.
An internal clock (Iφ) for the CPU and cache; a peripheral clock (Pφ) for the on-chip
peripheral modules; a bus clock (Bφ = CKIO) for the external bus interface; an MTU clock
(Mφ) for the MTU2S module.
Internal and peripheral clock frequencies can be changed independently using the PLL (phase
locked loop) circuits and divider circuits within the CPG. Frequencies are changed by software
using frequency control register (FRQCR) settings.
The clock can be stopped for sleep mode and software standby mode, and specific modules can
be stopped using the module standby function. For details on clock control in the power-down
modes, see section 22, Power-Down Modes.
Features
Section 3 Clock Pulse Generator (CPG)
Rev. 2.00 Dec. 09, 2005 Page 69 of 1152
Section 3 Clock Pulse Generator (CPG)
REJ09B0191-0200