HMS87C5216 ETC1 [List of Unclassifed Manufacturers], HMS87C5216 Datasheet - Page 65

• Manufacturer Part Number: HMS87C5216
• Description: CMOS SINGLE-CHIP 8-BIT MICROCONTROLLER FOR UR(Universal Remocon) & WIRELESS KEYBOARD
• Manufacturer: ETC1 [List of Unclassifed Manufacturers]

16. OSCILLATION CIRCUIT
Oscillation circuit is designed to be used either with a ceramic
resonator or crystal oscillator. Fig. 4.2-(a) shows circuit dia-
grams using a crystal (or ceramic) oscillator. As shown in the di-
agram, oscillation circuits can be constructed by connecting a
oscillator between Xout and Xin. Clock from oscillation circuit
makes CPU clock via clock pulse generator, and then enters pres-
* Recommendable resonator
SEP. 2004 Ver 1.01
Figure 16-1 Oscillator configurations
* MC type is building in load capacitior.CCR type is chip type.
(b) External clock input circuit
(a) External Crystal (Ceramic) oscillator circuit
Frequency
4.0 MHz
Xout
Xout
Xin
Xin
Resonator Maker
TDK
TDK
TDK
CQ
CCR4.0MC3
FCR4.0MC5
Part Name
ZTA4.00MG
FCR4.0M5
Cout
Cin
External clock
caler to make peripheral hardware clock. Alternately, the oscilla-
tor may be driven from an external source as shown is Fig. 4.2.-
(b). In the Standby (STOP) mode, oscillatiion stop, Xout state
goes to ``HIigh``, Xin state goes to ``Low``, and built-in feed
back resistor is disabled.
Load Capacitor
Cin=Cout=30pF
Cin=Cout=33pF
Cin=Cout=open
Operating Voltage
2.2 ~ 4.0V
2.2 ~ 4.0V
2.2 ~ 4.0V
2.2 ~ 4.0V
HMS87C5216