em78p131a ELAN Microelectronics Corp, em78p131a Datasheet - Page 28

• Manufacturer Part Number: em78p131a
• Description: 8-bit Microcontroller With Otp Rom
• Manufacturer: ELAN Microelectronics Corp

EM78P131A
8-Bit Microcontroller with OTP ROM
24 •
In most applications, pin OSCI and pin OSCO can be connected with a crystal or
ceramic resonator to generate oscillation. Fig. 5-12 depicts such circuit. The same
thing applies whether it is in the HXT mode or in the LXT mode.
In Fig. 5-12-1, when the connected resonator in OSCI and OSCO is used in
applications, R1 that is 1 MΩ needs to be shunted with resonator.
E M 78 P 131A
EM 78P131A
O S C O
OSCO
O S C I
O SCI
Fig. 5-12-1 Circuit for Crystal/Resonator
Fig. 5-12 Circuit for Crystal/Resonator
R 1
Crystal
(This specification is subject to change without further notice)
RS
Product Specification (V1.2) 09.16.2009
R esonator
C 1
C 2
C1
C2