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EM78P312N
8-Bit Microcontroller
Product Specification (V1.0) 10.03.2006
• 51
(This specification is subject to change without further notice)
OSCI
OSCO
EM78P809N
Ext. Clock
Fig. 5-29 Crystal/Resonator Circuit
C1
C2
XTAL
RS
OSCI
OSCO
EM78P809N
Fig. 5-30 Crystal/Resonator Circuit
Table12. Capacitor Selection Guide for Crystal Oscillator or Ceramic Resonator
Oscillator Type Frequency Mode Frequency C1 (pF) C2 (pF)
2.0 MHz 20~40 20~40
Ceramic Resonator HXT
4.0 MHz 10~30 10~30
1.0 MHz 15~30 15~30
2.0 MHz 15 15
Crystal Oscillator HXT
4.0 MHz 15 15
33
0
33
0
EM78P809N
C
740
4
XTAL
740
4
740
4
OSCI
Fig. 5-31 Crystal/Resonator-Series Mode Circuit
EM78P312N
EM78P312N
EM78P312N