MC145572AC Freescale Semiconductor, MC145572AC Datasheet - Page 194
MC145572AC
Manufacturer Part Number
MC145572AC
Description
Manufacturer
Freescale Semiconductor
Datasheet
1.MC145572AC.pdf
(264 pages)
Specifications of MC145572AC
Number Of Line Interfaces
1
Control Interface
HDLC
Lead Free Status / Rohs Status
Compliant
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10–32
10.14
FREQREF
BUFXTAL
CLKOUT
CLKOUT
4.096
15.36
DCL
DCL
SWITCHING CHARACTERISTICS FOR CRYSTAL INPUT, CLKOUT,
BUFXTAL, AND FREQREF
(V DD = 5.0 V
Ref. No.
135a
135b
136
137
138
139
140
141
142
143
144
145
136
137
FREQREF Minimum Pulse Width Low (LT Mode Only)
FREQREF Minimum Pulse Width High (LT Mode Only)
BUFXTAL Duty Cycle at 20.48 MHz
BUFXTAL Output High to IDL Clock Output High (IDL Master
Mode)
BUFXTAL Output High to IDL Clock Output Low (IDL Master
Mode)
BUFXTAL Output Low to 4096 kHz Clock Output Low
XTAL in Duty Cycle, for External Clock Source
LT Mode XTAL in to XTAL out Input Capacitance, FREQREF
Connected to Either V DD or V SS
LT Mode XTAL in to XTAL out Input Capacitance, FREQREF
Much Greater Than 8 kHz
NT Mode XTAL in to XTAL out Input Capacitance
NT Mode Deactivated Condition XTAL in to XTAL out Input
Capacitance
XTAL out Drive Level
2.048 MHz
2.56 MHz
5%, T A = – 40 to + 85 C, C L = 50 pF; See Figure 10–14)
135
Freescale Semiconductor, Inc.
139
For More Information On This Product,
Figure 10–18. Clock Timing
Go to: www.freescale.com
Parameter
138
MC145572
135
138
Min
20
20
45
—
—
—
45
—
15
15
—
—
137
Typ
50
24
—
—
—
—
—
—
—
—
—
1
Max
—
—
55
35
35
35
55
45
—
45
—
—
MOTOROLA
137
Unit
mW
ns
ns
ns
ns
ns
pF
pF
pF
pF
%
%
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