Atmel ARM-Based Evaluation Kit AT91SAM9N12-EK AT91SAM9N12-EK Data Sheet

1051

SAM9N12/SAM9CN11/SAM9CN12 [DATASHEET]

11063K–ATARM–05-Nov-13

Note:

1. These characteristics apply only when the 32.768KHz Oscillator is in bypass mode (i.e. when RCEN = 0, OSC32EN = 

0, OSCSEL = 1 and OSC32BYP = 1) in the SCKCR register. 

See “Slow Clock Selection” in the PMC section.

ESR

Equivalent Series Resistor Rs

Crystal @ 32.768 kHz

50

100

k

Ω

C

M

Motional Capacitance

Crystal @ 32.768 kHz

0.6

3

fF

C

S

Shunt Capacitance

Crystal @ 32.768 kHz

0.6

2

pF

I

DD ON

Current dissipation

R

S

 = 50 k

Ω

 C

CRYSTAL32 

= 6 pF

0.55

1.3

µA

R

S

 = 50 k

Ω

 C

CRYSTAL32 

= 12.5pF

0.85

1.6

µA

R

S

 = 100 k

Ω

 C

CRYSTAL32 

= 6 pF

0.7

2.0

µA

R

S

 = 100 k

Ω

 C

CRYSTAL32 

= 12.5 pF

1.1

2.2

µA

I

DD STDBY

Standby consumption

0.3

µA

1/(t

CPXIN32

)

XIN32 Clock Frequency

44

kHz

t

CPXIN32

XIN32 Clock Period

22

µs

t

CHXIN32

XIN32 Clock High Half-period

11

µs

t

CLXIN32

XIN32 Clock Low Half-period

11

µs

t

CLCH32

XIN32 Clock Rise time

400

ns

t

CLCL32

XIN32 Clock Fall time

400

ns

C

IN32

XIN32 Input Capacitance

6

pF

R

IN32

XIN32 Pull-down Resistor

4

M

Ω

V

IN32

XIN32 Voltage

VDDBU

VDDBU

V

V

INIL32

XIN32 Input Low Level Voltage

-0.3

0.3 x V

VDDBU

V

V

INIH32

XIN32 Input High Level Voltage

0.7 x V

VDDBU

V

VDDBU

 + 0.3

V

1/(t

CPRCz

)

Crystal Oscillator Frequency

20

32

44

kHz

Duty Cycle

45

55

%

t

ST

Startup Time

75

µs

I

DD ON

Power Consumption Oscillation

After startup time

1.1

2.1

µA

I

DD STDBY

Standby consumption

0.4

µA