Oscillator Circuit - Renesas 32185 User Manual

2.5

Oscillator Circuit

The oscillator circuit can be selected from three options by using the jumper J1: a surface
mount-type 20 MHz crystal oscillator module, a surface mount-type 10 MHz crystal oscillator
module or a crystal resonator. By default, the surface mount-type 20 MHz crystal oscillator module
is selected.
* Cx : Capacitor
* Jx : Jumper
* Rx : Resister
* Ux : IC
* Xx : Oscillator modules
* Yx : Resonator
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 (C1, C2) and a resistor (R2, R4).
Table 2.8 Oscillator Circuit Connections (Jumper)
Name Condition
Shorted
between 1–4
Shorted
J1
between 2–4
Shorted
between 3–4
Note1: Using M32186F8VFP, the J1 jumper should be shorted between 2-4.
REJ10B0223-0150/Rev.1.50
X1
Surface mount-type
oscillator module
OUT
20MHz
X2
Surface mount-type
OUT
oscillator module
10MHz
Default Outputs a clock from X1 (surface mount-type oscillator module)
(Note1) Outputs a clock from X2 (surface mount-type oscillator module)
Outputs a clock from Y1 (resonator)
32185/32186/32192/32195/32196 Group
Starter Kit User's Manual M3A-2154G52B
1
J1
2
4
3
R2
R4
Y1
C1
C2
Description
Mar 2008
U1
M32R/ECU
XIN
XOUT
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