MC68HC912D60 Motorola, MC68HC912D60 Datasheet - Page 187

• Manufacturer Part Number: MC68HC912D60
• Description: Microcontrollers
• Manufacturer: Motorola

12.4.3 Important Information For Calculating Component Values
12.4.3.1 How to Use This Information
MC68HC912D60A — Rev 3.0
MOTOROLA
Before attempting to apply the information in section
Parameters, the following data from the resonator vendor is required:
The following tables provide Maximum ESR vs. component value for
various frequencies. This table should be used in the following manner:
1. Choose the set of component values corresponding to the correct
2. Determine the range of components for which the Maximum ESR
•
•
•
•
•
•
•
Freescale Semiconductor, Inc.
For More Information On This Product,
VDDPLL Setting — The Voltage applied to the VDDPLL pin
(Logic 1 means VDDPLL is tied to the same potential as VDD).
Resonator Frequency — The frequency of oscillation of the
resonator.
Maximum ESR — The maximum effective series resistance
(ESR) of the resonator. This figure must include any increases
due to ageing, power dissipation, temperature, process variation
or particle contamination.
Resonator Frequency (f)
Maximum ESR (R, ESR, or R1)
Maximum Shunt Capacitance (C0)
Load Capacitance (CL) — this is not the external component
values but rather the capacitance applied in parallel with the
resonator during the tuning procedure.
maximum shunt capacitance (equal to the sum of EXTAL–VSS
parasitics in excess of 1pF, plus the C0 of the resonator) and
VDDPLL setting.
is greater than the absolute maximum ESR of the resonator
(including ageing, power dissipation, temperature, process
Go to: www.freescale.com
Oscillator
MC68HC912D60C Colpitts Oscillator Specification
12.4.2.4 Key
Technical Data
Oscillator
187