HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 585

• Manufacturer Part Number: HD6412240
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family / H8S/2200 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

17.1
The H8S/2245 Group has a built-in clock pulse generator (CPG) that generates the system clock
( ), the bus master clock, and internal clocks.
The clock pulse generator consists of an oscillator circuit, a duty adjustment circuit, a medium-
speed clock divider, and a bus master clock selection circuit.
17.1.1
Figure 17.1 shows a block diagram of the clock pulse generator.
EXTAL
XTAL
Overview
Block Diagram
Oscillator
circuit
Figure 17.1 Block Diagram of Clock Pulse Generator
Section 17 Clock Pulse Generator
adjustment
circuit
Duty
System clock to
Medium-
divider
pin
speed
Rev.3.00 Mar. 26, 2007 Page 543 of 772
to supporting modules
Internal clock
Section 17 Clock Pulse Generator
/2 to /32
Bus master
selection
SCKCR
circuit
clock
REJ09B0355-0300
Bus master clock
to CPU and DTC
SCK2 to SCK0