Clock Modules - Renesas M3A-HS37 User Manual

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2.8 Clock Modules

The M3A-HS37 clock modules consists of two blocks.
- Crystal resonator is connected to EXTAL and XTAL
- Output from the oscillator is connected to the SH7137 EXTAL
The M3A-HS37 comes standard with a 10.0 MHz crystal resonator.
When mounting the oscillator, remove R7 and the crystal oscillation circuit.
Figure 2.8.1 shows the clock module block diagram.
Oscillator
CLK
Crystal oscillation circuit
*: When mounting the oscillator, remove R7 and the crystal oscillation circuit.
：optional
Rev.1.00 Oct 09, 2008
REJ11J0021-0100
EXTAL
0
0
*
XTAL
R7
Crystal oscillator
10.0 MHz
*
Figure 2.8.1 Clock Module Block Diagram
SH7137
PA15/CK/TXD1/SSO
Functional Specifications
2.8 Clock Modules
Expansion connector
(J9, pin 23)
2-12