Справочник Пользователя для IBM EM78P312N
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