Renesas Single-Chip Microcomputer M37531T-ADS - Manual (Page 10)

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5.2 Using the CR Oscillator Circuit Pattern
There is a CR oscillator circuit pattern on the M37531T-ADS.
To use the CR oscillator circuit pattern, mount R3 and C5, and remove the coated wire of JP1, then
change the setting.
Figure 5.3 Using the CR oscillator circuit pattern
CAUTION
Note on Setting Up:
• Always shut OFF power before connecting this product. The power ON state could
destroy internal circuits.
As pins 5-6 and 2-3 of JP1 are shorted out by the coated
wire when shipped from the factory, use the oscillation of
OSC-2.
To use the CR oscillator circuit pattern, mount R3 and C5,
and remove the coated wire of JP1, then change the
setting as following.
When using CR oscillation: Short-circuit 4-5, 1-2
When using OSC-2:
Short-circuit 5-6, 2-3