gc80c510 CORERIVER Semiconductor, gc80c510 Datasheet - Page 97

• Manufacturer Part Number: gc80c510
• Description: Eprom/rom 8-bit Turbo Microcontrollers
• Manufacturer: CORERIVER Semiconductor

6.2.10 Clock Circuit (On-chip oscillators)
MiDAS1.1 Family
oscillator (only A0 version), 2) oscillator module and 3) internal ring oscillator.
inverter intended for use as a crystal-controlled, positive reactance oscillator. The system clock of the
MiDAS 1.1 family is Ring oscillator by default. User can turn off its oscillator under software control by
writing a 1 to the PD bit in PCON as shown in
in
Figure 6-21 Configuration for Clock
XTAL2 float as shown in
Table 6-12 Recommended Load Capacitor in Crystal Oscillator (V
The MiDAS1.1 family supports three clock configurations as shown in
The MiDAS1.1 family has the on-chip oscillator circuitry which consists of a single stage linear
The value of the load capacitor of crystal oscillator is dependent on the operating frequency as shown
To drive the device with an external clock source, apply the external clock signal to XTAL1 and leave
Figure
Crystal Oscillator
6-23.
Load Capacitor (C
XTAL2
XTAL1
Table 6-12
MiDAS
Figure
shows the recommended load capacitor in the various frequency.
LOAD
6-22.
)
Oscillator Module
Oscillator Module
OSC
Page 97 of 211
Figure
XTAL2
XTAL1
6-22.
~ 11.0592
MiDAS
47 pF
Crystal Oscillator [MHz]
Internal Ring Oscillator
DD
RC Oscillator
= 5V)
XTAL2
XTAL1
Figure
MiDAS
RING
OSC
20.0000
20 pF
6-21: 1) crystal