MC68HC08AS32 Datasheet, PDF(381/394 Page) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

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MC68HC08AS32 Datasheet, PDF (381/394 Pages) Motorola, Inc – M68HC08 Family of 8-bit microcontroller units (MCUs)

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Electrical Specifications

CGM Acquisition/Lock Time Information

21.11 CGM Acquisition/Lock Time Information

Description

Symbol Min

Typ

Max

Unit

Filter Capacitor Multiply Factor

Cfact

â

0.0154

â

F/sV

Acquisition Mode Time Factor

Kacq

â

0.1135

â

V

Tracking Mode Time Factor

Ktrk

â

0.0174

â

V

Manual Mode Time to Stable(1)

tacq

â

f---x-8-c---l-kÃ----Ã-V----KD----D-a--A-c--q--

â

s

Manual Stable to Lock Time(1)

tal

â

f---x4--c---Ãl-k---V-Ã----D-K--D---tA-r--k-

â

s

Manual Acquisition Time

Tracking Mode Entry Frequency Tolerance

tLock

â

tacq + tal

âtrk

0

â

â

s

3.6%

â

Acquisition Mode Entry Frequency Tolerance

âacq 6.3%

â

7.2%

â

LOCK Entry Frequency Tolerance

LOCK Exit Frequency Tolerance

âLock

0

â

âunl 0.9%

â

0.9%

â

1.8%

â

Reference Cycles per Acquisition Mode Measurement nacq

â

32

â

Cyc

Reference Cycles per Tracking Mode Measurement

ntrk

â

128

â

Cyc

Automatic Mode Time to Stable(1)

tacq

n-f--x-a--c-c-l--kq- f---x-8-c---l-kÃ----Ã-V----KD----D-a--A-c--q--

â

s

Automatic Stable to Lock Time(1)

Automatic Lock Time

tal

f-n--x--tc-r--lk-k- f---x4--c---Ãl-k---V-Ã----D-K--D---tA-r--k-

â

s

tLock

â

tacq + tal

â

s

PLL Jitter(2)

fJ

0

â

fcrys Ã 0.025% Hz

Ã 2PN/4

1. If CF chosen correctly

2. Deviation of average bus frequency over 2 ms, N = VCO frequency multiplier

MC68HC08AS32 â Rev. 3.0

MOTOROLA

Electrical Specifications

Advance Information

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