TWR-56F8257 Freescale Semiconductor, TWR-56F8257 Datasheet - Page 59
TWR-56F8257
Manufacturer Part Number
TWR-56F8257
Description
TOWER SYSTEM KIT MC56F8257
Manufacturer
Freescale Semiconductor
Type
DSC, Digital Signal Controllerr
Specifications of TWR-56F8257
Contents
Board, Cables, Documentation, DVD
For Use With/related Products
Freescale Tower System, MC56F8257
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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7.15
7.16
Freescale Semiconductor
1
2
3
4
signal (programmed prescaler_clock) over 264 clocks
Output frequency after factory trim.
This is the time required from standby to normal mode transition.
J
See
Cycle-to-cycle jitter. This is measured on the CLKO
A
is required to meet QSCI requirements.
Variation over temperature –40 C to 150 C
Figure
Variation over temperature 0 C to 105 C
Relaxation oscillator output frequency
Relaxation oscillator stabilization time
8.16
8.08
7.92
7.84
External Crystal or Resonator Requirement
Relaxation Oscillator Timing
8
18.
-50
Figure 18. Relaxation Oscillator Temperature Variation (Typical) After Trim
Frequency of operation
Characteristic
Standby Mode
Normal Mode
Characteristic
-25
MC56F825x/MC56F824x Digital Signal Controller, Rev. 3
Table 31. Crystal or Resonator Requirement
0
Table 32. Relaxation Oscillator Timing
1
2
4
4
25
Degrees C (Junction)
3
Symbol
Symbol
f
t
XOSC
jitterrosc
50
t
roscs
f
op
Minimum
75
Min
4
—
—
—
—
—
100
+1.5 to –1.5 +3.0 to –3.0
Typical
Typ
0 to +1
8
8.05
400
400
1
125
+2.0 to –2.0
Maximum
Max
16
—
—
3
150
Specifications
Unit
MHz
Unit
MHz
kHz
ms
ps
175
%
%
59
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