3 acquisition/lock time specifications, Acquisition/lock time specifications – Freescale Semiconductor MC68HC08KH12 User Manual
Page 258
Advance Information
MC68HC(7)08KH12
—
Rev. 1.1
258
Freescale Semiconductor
17.15.3 Acquisition/Lock Time Specifications
Description
Symbol
Min
Typ
Max
Notes
Filter Capacitor Multiply Factor
C
FACT
—
0.0145
—
F/s V
Acquisition Mode Time Factor
K
ACQ
—
0.117
—
V
Tracking Mode Time Factor
K
TRK
—
0.021
—
V
Manual Mode Time to Stable
t
ACQ
—
—
If C
F
chosen correctly
Manual Stable to Lock Time
t
AL
—
—
If C
F
chosen correctly
Manual Acquisition Time
t
LOCK
—
t
ACQ
+ t
AL
—
Tracking Mode Entry Frequency
Tolerance
∆
TRK
0
—
±
3.6%
Acquisition Mode Entry Frequency
Tolerance
∆
ACQ
±
6.3%
—
±
7.2%
LOCK Entry Frequency Tolerance
∆
LOCK
0
—
±
0.9%
LOCK Exit Frequency Tolerance
∆
UNL
±
0.9%
—
±
1.8%
Reference Cycles Per Acquisition
Mode Measurement
n
ACQ
32
—
Reference Cycles Per Tracking
Mode Measurement
n
TRK
128
—
Automatic Mode Time to Stable
t
ACQ
n
ACQ
/f
RDV
—
If C
F
chosen correctly
Automatic Stable to Lock Time
t
AL
n
TRK
/f
RDV
—
If C
F
chosen correctly
Automatic Lock Time
t
LOCK
—
t
ACQ
+ t
AL
—
8
V
DDA
×
f
RDV
K
ACQ
×
------------------------------
4
V
DDA
×
f
RDV
K
TRX
×
-----------------------------
8
V
DDA
×
f
RDV
K
ACQ
×
------------------------------
4
V
DDA
×
f
RDV
K
TRX
Ч
-----------------------------