HD6412240 RENESAS [Renesas Technology Corp], HD6412240 Datasheet - Page 595

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

17.4
When the oscillator frequency is 5 MHz or higher, the duty adjustment circuit adjusts the duty
cycle of the clock signal from the oscillator to generate the system clock ( ).
17.5
The medium-speed clock divider divides the system clock to generate /2, /4, /8, /16, and /32.
17.6
The bus master clock selection circuit selects the system clock ( ) or one of the medium-speed
clocks ( /2, /4, /8, /16, and /32) to be supplied to the bus master, according to the settings of
the SCK2 to SCK0 bits in SCKCR.
17.7
As various characteristics related to the crystal resonator are closely linked to the user's board
design, thorough evaluation is necessary on the user's part, using the resonator connection
examples shown in this section as a guide. As the resonator circuit ratings will depend on the
floating capacitance of the resonator and the mounting circuit, the ratings should be determined in
consultation with the resonator manufacturer. The design must ensure that a voltage exceeding the
maximum rating is not applied to the oscillator pin.
Duty Adjustment Circuit
Note on Crystal Resonator
Medium-Speed Clock Divider
Bus Master Clock Selection Circuit
Rev.3.00 Mar. 26, 2007 Page 553 of 772
Section 17 Clock Pulse Generator
REJ09B0355-0300