MC9S12D64 Motorola, MC9S12D64 Datasheet - Page 107
![no-image](/images/manufacturer_photos/0/4/459/motorola_sml.jpg)
MC9S12D64
Manufacturer Part Number
MC9S12D64
Description
MC9S12DJ64 Device User Guide V01.17
Manufacturer
Motorola
Datasheet
1.MC9S12D64.pdf
(126 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC9S12D64
Manufacturer:
MOTOROLA
Quantity:
113
Company:
Part Number:
MC9S12D64
Manufacturer:
FREESCALE
Quantity:
4 000
Company:
Part Number:
MC9S12D64CFU
Manufacturer:
FREESCALE
Quantity:
1 831
Company:
Part Number:
MC9S12D64CFU
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC9S12D64CFU
Manufacturer:
MOTOROLA/摩托罗拉
Quantity:
20 000
Company:
Part Number:
MC9S12D64CFUE
Manufacturer:
FREE
Quantity:
2 190
Company:
Part Number:
MC9S12D64CFUE
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC9S12D64CFUE
Manufacturer:
FREESCALE
Quantity:
20 000
Company:
Part Number:
MC9S12D64CFUER
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
Part Number:
MC9S12D64CPVE
Manufacturer:
FREESCALE
Quantity:
20 000
A.5.3 Phase Locked Loop
The oscillator provides the reference clock for the PLL. The PLL´s Voltage Controlled Oscillator (VCO)
is also the system clock source in self clock mode.
A.5.3.1 XFC Component Selection
This section describes the selection of the XFC components to achieve a good filter characteristics.
The following procedure can be used to calculate the resistance and capacitance values using typical
values for K
The grey boxes show the calculation for f
for f
The VCO Gain at the desired VCO frequency is approximated by:
NOTES:
1. Depending on the crystal a damping series resistor might be necessary
2. f
3. Maximum value is for extreme cases using high Q, low frequency crystals
4. Only valid if Pierce oscillator/external clock mode is selected
osc
OSC
= 4MHz, C = 22pF.
= 4MHz and a 25MHz bus clock.
1
, f
1
and i
f
osc
K
V
ch
from Table A-16.
=
K
refdv+1
Figure A-2 Basic PLL functional diagram
1
1
e
---------------------- -
f
K
1
1
f
–
ref
VDDPLL
f
1V
VCO
vco
=
= 50MHz and f
–
100
f
cmp
C
C
p
Loop Divider
s
e
Detector
----------------------- -
Phase
60 50
synr+1
–
K
100
ref
1
–
R
MC9S12DJ64 Device User Guide — V01.17
= 1MHz. E.g., these frequencies are used
= -90.48MHz/V
XFC Pin
1
2
VCO
K
V
f
vco
107