m30262f8gp Renesas Electronics Corporation., m30262f8gp Datasheet - Page 35

• Manufacturer Part Number: m30262f8gp
• Description: Renesas 16-bit Cmos Single-chip Microcomputer M16c Family / M16c/20 Series
• Manufacturer: Renesas Electronics Corporation.

Clock Generating Circuit
Figure 1.8.1. Examples of main clock
Figure 1.8.2. Examples of sub-clock
Figure 1.8.1 shows some examples of the main clock circuit, one using an oscillator connected to the
circuit, and the other one using an externally derived clock for input. Figure 1.8.2 shows some examples of
sub-clock circuits, one using an oscillator connected to the circuit, and the other one using an externally
derived clock for input. Circuit constants in Figures 1.8.1 and 1.8.2 vary with each oscillator used. Use the
values recommended by the manufacturer of your oscillator.
Note: Insert a damping resistor if required. The resistance will vary depending on the oscillator and the oscillation drive
X
(Built-in feedback resistor)
Preliminary Specifications Rev. 0.9
CIN
Note: Insert a damping resistor if required. The resistance will vary depending on the oscillator and the oscillation drive
capacity setting. Use the value recommended by the maker of the oscillator.
Also, if the oscillator manufacturer's data sheet specifies that a feedback resistor be added external to the chip,
Specifications in this manual are tentative and subject to change.
(Built-in feedback resistor)
X
insert a feedback resistor between X
Microcomputer
IN
C
CIN
capacity setting. Use the value recommended by the maker of the oscillator.
When the oscillation drive capacity is set to low, check that oscillation is stable. Also, if the oscillator manufacturer's
data sheet specifies that a feedback resistor be added external to the chip, insert a feedback resistor between X
and X
Microcomputer
C
IN
OUT
following the instruction.
X
COUT
X
OUT
R
(Note)
C
Cd
COUT
(Note)
R
C
d
OUT
CIN
Renesas Technology Corp.
and X
COUT
following the instruction.
Vcc
Vss
Vcc
Vss
Externally derived clock
(Built-in feedback resistor)
X
(Built-in feedback resistor)
Externally derived clock
IN
X
Microcomputer
CIN
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
Microcomputer
X
Open
OUT
X
Open
COUT
IN
M16C/26 Group
29