Freescale Semiconductor MC68HC08KH12 manual Acquisition/Lock Time Specifications, 258

Models: MC68HC08KH12

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17.15.3 Acquisition/Lock Time Specifications

Description

Symbol

Min

Typ

Max

 

 

Notes

 

 

 

 

 

 

 

 

Filter Capacitor Multiply Factor

CFACT

0.0145

 

F/s V

 

Acquisition Mode Time Factor

KACQ

0.117

V

 

Tracking Mode Time Factor

KTRK

0.021

V

 

Manual Mode Time to Stable

tACQ

8 VDDA

If C

F chosen correctly

-----------------------------

 

 

 

fRDV KACQ

 

 

 

 

Manual Stable to Lock Time

tAL

4 VDDA

If C

F chosen correctly

-----------------------------

 

 

 

fRDV KTRX

 

 

 

 

Manual Acquisition Time

tLOCK

t ACQ + tAL

 

 

 

Tracking Mode Entry Frequency

TRK

0

± 3.6%

 

 

 

Tolerance

 

 

 

Acquisition Mode Entry Frequency

ACQ

± 6.3%

± 7.2%

 

 

 

Tolerance

 

 

 

LOCK Entry Frequency Tolerance

LOCK

0

± 0.9%

 

 

 

LOCK Exit Frequency Tolerance

UNL

± 0.9%

± 1.8%

 

 

 

Reference Cycles Per Acquisition

nACQ

 

32

 

 

 

Mode Measurement

 

 

 

 

Reference Cycles Per Tracking

nTRK

 

128

 

 

 

Mode Measurement

 

 

 

 

Automatic Mode Time to Stable

tACQ

nACQ/fRDV

8 VDDA

 

If C F chosen correctly

-----------------------------

 

 

 

 

fRDV KACQ

 

 

 

 

Automatic Stable to Lock Time

tAL

nTRK/fRDV

4 VDDA

 

If C F chosen correctly

-----------------------------

 

 

 

 

fRDV KTRX

 

 

 

 

Automatic Lock Time

tLOCK

t ACQ + tAL

 

 

 

Advance Information

MC68HC(7)08KH12 Rev. 1.1

 

 

258

Freescale Semiconductor

Page 258
Image 258
Freescale Semiconductor MC68HC08KH12 manual Acquisition/Lock Time Specifications, 258