ZL30402
Data Sheet
Example 1: Calculate the binary value that must be written to the MCFC register to correct a -1ppm offset of the
Master Crystal Oscillator. The -1ppm offset for a 20 MHz frequency is equivalent to -20 Hz:
MCFC = 45036 * 20 = 900720 = 00 0D BE 70 H
Note: Correcting the -1ppm crystal offset requires +1ppm MCFC offset.
Example 2: Calculate the binary value that must be written to the MCFC register to correct a +2 ppm offset of the
Master Crystal Oscillator. The +2 ppm offset for 20 MHz frequency is equivalent to 40 Hz:
MCFC = 45036 * (-40) = -1801440 = FF E4 83 20 H
6.0 Characteristics
6.1 AC and DC Electrical Characteristics
Absolute Maximum Ratings*
Parameter
Symbol
Min.
Max.
Units
1
2
3
4
5
6
Supply voltage
VDDR
VPIN
IPIN
-0.3
-0.3
7.0
VDD+0.3
30
V
V
Voltage on any pin
Current on any pin
mA
°C
mW
V
Storage temperature
TST
-55
125
Package power dissipation (80 pin LQFP)
ESD rating
PPD
VESD
1000
1500
* Voltages are with respect to ground (GND) unless otherwise stated
* Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
Recommended Operating Conditions*
Characteristics
Supply voltage
Operating temperature
Symbol
Min.
Typ.
Max.
Units
1
2
VDD
TA
3.0
-40
3.3
25
3.6
V
+85
°C
* Voltages are with respect to ground (GND) unless otherwise stated
32
Zarlink Semiconductor Inc.
ZARLINK [ ZARLINK SEMICONDUCTOR INC ]
