Preliminary Electrical Specifications
Clock Generation Module Characteristics
17.15 Cloc k Ge ne ra tion Mod ule Cha ra c te ristic s
17.15.1 CGM Com p one nt Sp e c ific a tions
Characteristic
Symbol
Min
Typ
6
Max
Unit
MHz
pF
(1)
Crystal reference frequency
f
XCLK
(2)
Crystal load capacitance
C
C
C
—
—
20
20
10
0
—
L
1
2
B
S
(2)
Crystal fixed capacitance
Crystal tuning capacitance
Feedback bias resistor
Series resistor
pF
(2)
pF
R
R
MΩ
kΩ
NOTES:
1. Fundamental mode crystals only
2. Consult crystal manufacturer’s data.
17.15.2 CGM Ele c tric a l Sp e c ific a tions
Description
Operating voltage
Symbol
Min
4.0
0
Typ
—
25
6
Max
5.5
70
Unit
V
V
DD
o
Operating temperature
T
C
Crystal reference frequency
VCO center-of-range frequency
VCO multiply factor
f
MHz
MHz
RCLK
f
48
—
1
VRS
N
1
1
4095
8
P
VCO prescale multiplier
Reference divider factor
VCO operating frequency
2
R
1
1
15
f
40
—
56
MHz
VCLK
MC68HC(7)08KH12 — Rev. 1.0
Advance Information
MOTOROLA
Preliminary Electrical Specifications
257