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32176 Group
Starter Kit User’s Manual M3A-2152
REJ10B0224-0300/Rev.3.00 Jan. 2007 Page 51 of 82
2.5 Oscillator Circuit
The oscillator circuit can be selected from three options by using the jumper J1: a surface
mount-type 10 MHz crystal oscillator module, a DIP-type crystal oscillator module or a crystal
resonator.
By default, the surface mount-type 10 MHz crystal oscillator module is selected.
Figure 2.5 Oscillator Circuit
Note: The shaded sections in the above diagram have only patterns available. When using the resonator Y1, please
be sure to add capacitors (C3, C4) and a resistor (R4).
Table 2.8 Oscillator Circuit Connections (Jumper)
Name Default Condition Description
{
Shorted
between 1–4
Outputs a clock from X1 (surface mount-type oscillator module)
Shorted
between 2–4
Outputs a clock from X2 (DIP-type oscillator module)
J1
Shorted
between 3–4
Outputs a clock from Y1 (resonator)
Note: The J1 jumper is shorted by soldering.
U1
M32R/ECU
XOUT
J1
1
2
X1
XINOUT
C3
R3
R4
Y1
X2
C4
OUT
3
4
Surface
mount-type
oscillator module
DIP-type
oscillator module