HD64F38602R Datasheet, PDF (98/552 Pages) Renesas Technology Corp – Renesas 16-Bit Single-Chip Microcomputer

Section 4 Clock Pulse Generators
4.2 System Clock Oscillator
Clock pulses can be supplied to the system clock divider either by connecting a crystal or ceramic
resonator, or by providing external clock input.
Either the system clock oscillator or on-chip oscillator can be selected, as shown in figure 4.1. For
the selecting method, see section 4.2.4, On-Chip Oscillator Selection Method.
4.2.1 Connecting Crystal Resonator
Figure 4.2 shows a typical method of connecting a crystal resonator. An AT-cut parallel-resonance
crystal resonator should be used. For notes on connecting, refer to section 4.5.2, Notes on Board
Design.
C1
OSC1
C2
OSC2
Frequency
Manufacturer
Product Type C1, C2 Recommendation Value
4.194304 MHz NIHON DEMPA KOGYO CO.,LTD. NR-18
12 pF ±20%
Figure 4.2 Typical Connection to Crystal Resonator
4.2.2 Connecting Ceramic Resonator
Figure 4.3 shows a typical method of connecting a ceramic resonator. For notes on connecting,
refer to section 4.5.2, Notes on Board Design.
OSC1
OSC2
C₁
C₂
Frequency
4.19 MHz
Manufacturer
C1, C2 Recommendation Value
Murata Manufacturing Co., Ltd. 15 pF (on-chip)
47 pF (on-chip)
Figure 4.3 Typical Connection to Ceramic Resonator
Rev. 3.00 May 15, 2007 Page 66 of 516
REJ09B0152-0300