HD64336901G Renesas Technology, HD64336901G Datasheet - Page 93

• Manufacturer Part Number: HD64336901G
• Description: (HD64xxx Series) 16-BIT MICROCONTROLLER
• Manufacturer: Renesas Technology

Clock oscillator circuitry (CPG: clock pulse generator) consists of an external oscillator, an
internal RC oscillator, a duty correction circuit, a clock select circuit, and system clock dividers.
Figure 5.1 shows a block diagram of the clock pulse generator.
The system clock ( ) is a basic clock on which the CPU and on-chip peripheral modules operate.
The system clock is divided into /2 to /8192 by prescaler S and the divided clocks are supplied
to respective peripheral modules.
CPG0200A_000020020200
OSC1
OSC2
Internal
RC
oscillator
oscillator
RC
System
clock
RC clock
divider
Figure 5.1 Block Diagram of Clock Pulse Generators
Section 5 Clock Pulse Generators
OSC
RC
RC
RC
correction
/2
/4
circuit
Duty
RC
OSC
Clock
select
circuit
System
divider
clock
Rev. 1.00, 11/03, page 65 of 376
/8
/16
/32
/64
Prescaler S
(13 bits)
to
/2
/8192