ATSAM4LS4BA-AU 查看數據表（PDF） - Atmel Corporation

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ATSAM4LS4BA-AU

ATSAM ARM-based Flash MCU

Atmel Corporation 

ATSAM4L8/L4/L2

Table 9-23. Crystal Oscillator Characteristics

Symbol

CL

CSHUNT

CXIN

CXOUT

tSTARTUP

Parameter

Crystal load capacitance(1)

Crystal shunt capacitance(1)

Parasitic capacitor load(2)

Parasitic capacitor load(2)

Startup time(1)

Conditions

TQFP100 package

SCIF.OSCCTRL.GAIN = 2

Active mode, f = 0.6MHz,

SCIF.OSCCTRL.GAIN = 0

Min

Typ

Max

6

18

7

4.91

3.22

30 000 (3)

30

Unit

pF

cycles

Active mode, f = 4MHz,

130

SCIF.OSCCTRL.GAIN = 1

IOSC

Current consumption(1)

Active mode, f = 8MHz,

SCIF.OSCCTRL.GAIN = 2

260

µA

Active mode, f = 16MHz,

590

SCIF.OSCCTRL.GAIN = 3

Active mode, f = 30MHz,

960

SCIF.OSCCTRL.GAIN = 4

1.

These values are based on simulation. These values are not covered by test limits in production or characterization.

2.

These values are based on characterization. These values are not covered by test limits in production.

3.

Nominal crystal cycles.

Figure 9-3. Oscillator Connection

Crystal

LM

CSHUNT

RM

CM

Xin

CLEXT

CSTRAY

CLEXT

Xout

42023GS–SAM–03/2014

122

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