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6. Selecting a Clock
With the M32186T2-PTC, it is possible to select a clock supply
to the MCU by the clock select switch (SW1). Select a clock
supply as shown below.
However, when used with the M32186T2-PTC, the clock
cannot be supplied from the user system.
(1) 8 MHz
Supplies the clock (X1: 8 MHz) on the M32186T2-PTC
board to the MCU.
(2) SOCKET
Supplies the clock to the MCU from the socket (X2) for
mounting an oscillator on the M32186T2-PTC board. By
mounting an oscillator to the X2 socket of the MCU, it is
possible to change the operating frequency.
Figure 6.1 shows the connecting the X2 socket and the
MCU.
7. External Dimensions and a Sample Foot Pattern of the M32186T2-PTC
85.0
CN2
X2
SOCKET
SW1
8MHz
20MHz
CN1
Figure 7.1 External dimensions and a sample foot pattern of the M32186T2-PTC
C1
C2
Figure 6.1 Connection diagram of X2 socket
16.0
(5/6)
Mount an oscillator to X as
shown in the diagram printed
on the board.
X2 socket
Connected to Xin pin of MCU
R10
Connected to Xout pin of MCU
R4
R10：
1MΩ
R4：
510Ω
C1：
27pF
C2：
27pF
0.25
0.5
19.0
23.0
Unit: mm
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