Microcontrollers Data Sheet

MC68HC(7)08KH12 — Rev. 1.1 Advance Information
Freescale Semiconductor
257
17.15 Clock Generation Module Characteristics
17.15.1 CGM Component Specifications
17.15.2 CGM Electrical Specifications
Characteristic Symbol Min Typ Max Unit
Crystal reference frequency
(1)
1. Fundamental mode crystals only
f
XCLK
6MHz
Crystal load capacitance
(2)
2. Consult crystal manufacturer’s data.
C
L
———pF
Crystal fixed capacitance
(2)
C
1
20 pF
Crystal tuning capacitance
(2)
C
2
20 pF
Feedback bias resistor R
B
10 MΩ
Series resistor R
S
0kΩ
NOTES:
Description Symbol Min Typ Max Unit
Operating voltage V
DD
4.0 — 5.5 V
Operating temperature T 0 25 70
o
C
Crystal reference frequency f
RCLK
6MHz
VCO center-of-range frequency f
VRS
48 MHz
VCO multiply factor N 1 — 4095
VCO prescale multiplier 2
P
118
Reference divider factor R 1 1 15
VCO operating frequency f
VCLK
40 — 56 MHz