66
MC95FG308 / MC95FG208
ABOV Semiconductor Co., Ltd.
11 Peripheral Hardware
11.1 Clock Generator
11.1.1 Overview
As shown in Figure 11.1, the clock generator produces the basic clock pulses which provide the system clock to be
supplied to the CPU and the peripheral hardware. It contains main-frequency clock oscillator. The system clock
operation can be easily obtained by attaching a crystal between the XIN and XOUT pin, respectively. The system clock
can also be obtained from the external oscillator. In this case, it is necessary to put the external clock signal into the
XIN pin and open the XOUT pin. The default system clock is INT-RC Oscillator and the default division rate is one. In
order to stabilize system internally, use 1MHz RING oscillator for BIT, WDT and ports de-bounce.
- Calibrated Internal RC Oscillator (8MHz)
. INT-RC OSC/1 (Default system clock)
. INT-RC OSC/2 (4MHz)
. INT-RC OSC/4 (2MHz)
. INT-RC OSC/8 (1MHz)
- Crystal Oscillator (1~16MHz)
- Sub-Clock Crystal Oscillator (32.768kHz)
11.1.2 Block Diagram
Figure 11.1
Clock Generator Block Diagram
Main
OSC
X
IN
X
OUT
PDOWN
SUB
OSC
SUB
XIN
SUB
XOUT
WT
System
ClockGen.
WDT
BIT
DCLK
System Clock
Masking Control
BIT
Overflow
SCLK
(Core, System,
Peripherals)
Clock
Change
f
XIN
f
SUB
f
INTRC
1/2
1/4
1/8
1/1
DIV/8
RING-OSC
(1MHz)
PDOWN
STOP1
INT-RC
OSC
(8MHz)
f
RING
DIV
Содержание MC95FG208 Series
Страница 14: ...14 MC95FG308 MC95FG208 ABOV Semiconductor Co Ltd 4 Package Diagram Figure 4 1 32 Pin SOP Package...
Страница 15: ...15 MC95FG308 MC95FG208 ABOV Semiconductor Co Ltd Figure 4 2 32 Pin QFN Package...
Страница 16: ...16 MC95FG308 MC95FG208 ABOV Semiconductor Co Ltd Figure 4 3 32 Pin LQFP Package...
Страница 17: ...17 MC95FG308 MC95FG208 ABOV Semiconductor Co Ltd Figure 4 4 28 Pin SOP Package...
Страница 18: ...18 MC95FG308 MC95FG208 ABOV Semiconductor Co Ltd Figure 4 5 28 Pin SOP Package continue...
Страница 19: ...19 MC95FG308 MC95FG208 ABOV Semiconductor Co Ltd Figure 4 6 28 Pin SOP Package...
Страница 20: ...20 MC95FG308 MC95FG208 ABOV Semiconductor Co Ltd Figure 4 7 28 Pin TSSOP Package...
Страница 21: ...21 MC95FG308 MC95FG208 ABOV Semiconductor Co Ltd Figure 4 8 20 Pin SOP Package...
Страница 22: ...22 MC95FG308 MC95FG208 ABOV Semiconductor Co Ltd Figure 4 9 20 Pin TSSOP Package...
Страница 23: ...23 MC95FG308 MC95FG208 ABOV Semiconductor Co Ltd Figure 4 10 16 Pin SOP Package...
Страница 24: ...24 MC95FG308 MC95FG208 ABOV Semiconductor Co Ltd Figure 4 11 16 Pin TSSOP Package...