Freescale Semiconductor StarterTRAK USB for Automotive Safety Applications TRK-USB-MPC5643L TRK-USB-MPC5643L 数据表

Freescale Semiconductor

92

×

1

V

DD

= 3.3 V ±10%,  T

J

 = –40 to +150 °C, unless otherwise specified.

f

XOSCHS

SR Oscillator frequency

—

4.0

—

40.0

MHz

g

mXOSCHS

P Oscillator 

transconductance

V

DD

= 3.3 V ±10% 

4.5

—

13.25

mA/V

V

XOSCHS

D Oscillation amplitude

f

OSC

= 4, 8, 10, 12, 16 MHz 

1.3

—

—

V

f

OSC

= 40 MHz

1.1

—

—

V

XOSCHSOP

D Oscillation operating 

point

—

—

0.82

—

V

T

XOSCHSSU

T Oscillator start-up time

f

OSC

= 4, 8, 10, 12 MHz

2

2

The recommended configuration for maximizing the oscillator margin are:
XOSC_MARGIN = 0 for 4 MHz quartz
XOSC_MARGIN = 1 for 8/16/40 MHz quartz

—

—

6

ms

f

OSC

= 16,  40 MHz

—

—

2

V

IH

SR Input high level CMOS

Schmitt Trigger

Oscillator bypass mode

0.65 × V

DD

—

V

DD

+ 0.4

V

V

IL

SR Input low level CMOS

Schmitt Trigger

Oscillator bypass mode

–0.4

—

0.35 × V

DD

V

f

REF_CRYSTAL

f

REF_EXT

D FMPLL reference frequency 

range

1

Crystal reference

4

—

40

MHz

f

PLL_IN

D Phase detector input 

frequency range (after 
pre-divider)

—

4

—

16

MHz

f

FMPLLOUT

D Clock frequency range in 

normal mode

—

4

—

120

2

MHz

f

FREE

P Free running frequency

Measured using clock division 
(typically 

16)

20

—

150

MHz

f

sys

D On-chip FMPLL frequency

2

—

16

—

120

MHz

t

CYC

D System clock period

—

—

—

1 / f

sys

ns

f

LORL

f

LORH

D Loss of reference frequency 

window

3

Lower limit

1.6

—

3.7

MHz

Upper limit

24

—

56

f

SCM

D Self-clocked mode 

frequency

4,5

—

20

—

150

MHz

t

LOCK

P Lock time

Stable oscillator (f

PLLIN

= 4 MHz),

stable V

DD

—

—

200

µs