gc80c510 CORERIVER Semiconductor, gc80c510 Datasheet - Page 98

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

Figure 6-22 Clock Circuit
due to interaction between the amplifier and its feedback capacitance. Once the external signal meets
the V
Figure 6-23 The Load Capacitor versus Operating Frequency
Crystal OSC.
Table 6-13 System Clock Configuration
Ring OSC.
An external oscillator may encounter as much as a
XT/RG
IL
Load Cap.
MiDAS
1
0
1
0
and V
PD
PD
XTAL2
IH
specifications the capacitance will not exceed 20pF.
XTOFF
RINGON
XTOFF
Control Flag
0
X
0
X
C
On-chip AMP
L
Oscillator
Crystal
RINGON
4MHz
X
1
X
1
XTAL1
(16-bit Counter)
DIV1
Clock Stable
C
L
1/2/4/8
XTUP
Circuit
Divide
TRGSL
DIV0
X
X
0
1
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Crystal OSC.
Ring OSC.
RGMD
(During power-down wake-up)
(During power-down wake-up)
System Clock (F
100pF
XT/RG
Crystal Oscillator
Crystal Oscillator
Ring Oscillator
Ring Oscillator
Control
Switch
Clock
load at XTAL1 when it starts up. This is
RGSL
Frequency (log) (HERTZ)
C
L
= LARGE
System clock
OSC
PD
)
Functional Description
IDL
C
L
RGMD
= SMALL
Status Bits
0
1
0
1
Peri. Clock
CPU Clock
XTUP
0 / 1
1
0
0