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5. Oscillator Circuit (See Figure 3) This product has two oscillator circuit patterns for the main clock XIN and sub-clock XCIN.
Select one of them according to the oscillator circuitry of the user system.
(1) When using the internal oscillator circuit of the MCU:
The oscillator circuit on the user system may not oscillate because a converter board is used between the emulator MCU and the
user system. In this case, set the jumper switch to INT and mount an oscillator circuit on the M38D59T-RLFS’s oscillator circuit
pattern. When using the oscillator circuit on the user system, be sure to set the jumper switch to EXT.
(2) When using an oscillator module IC etc. (self-oscillation):
It is not necessary to mount an oscillator circuit on the M38D59T-RLFS’s oscillator circuit pattern.
C3 C4 X1X2
R4
C1 C2
R3
XCIN XCOUT XIN XOUT
IC1
CN2-3a(P60)
CN2-2b(P61)
CN2-4a(XIN)
CN2-4b(XOUT)
CN1,CN2
VCC CN2-5a(VCC)
TP1
RESET
CN2-2a(RESET*)
CN2-3b(VSS)
TP3
VCC
TP2
GND
+
JP3 JP4 JP1 JP2
R2
C5
RESET*
R1
EXT
INT
EXT
INT
EXT
INT
EXT
INT
Figure 3 Oscillator circuit diagram
X1
C1 C2
R2
JP2 XOUTJP1 XIN JP3 XCIN JP4 XCOUT
X2
C4
R3
R4
C3
INT EXT INT EXT INT EXT INT EXT
For 3-terminal oscillator
For 2-terminal oscillator
Figure 4 Oscillator circuit pattern