Atmel SAM4L-EK Atmel ATSAM4L-EK ATSAM4L-EK Data Sheet

42023ES–SAM–07/2013

The values in 

 are measured values of power consumption under the following condi-

tions, except where noted:

• T=25°C, WAIT mode, Low power waveform, Frame Rate = 32Hz from OSC32K

• Configuration: 4COMx40SEG, 1/4 Duty, 1/3 Bias, No animation

• All segments on, Load = 160 x 22pF between each COM and each SEG.

• LCDCA current based on I

LCD

 = I

WAIT

(Lcd On) - I

WAIT

(Lcd Off)

Liquid Crystal Display Controler characteristics

SEG

Segment Terminal Pins

40

COM

Common Terminal Pins

4

f

Frame

LCD Frame Frequency

F

CLKLCD

31.25

512

Hz

C

Flying

Flying Capacitor

100

nF

V

LCD

LCD Regulated Voltages

 (1)

CFG.FCST=0

1.

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

C

Flying

 = 100nF

100nF on V

LCD

, BIAS2 and BIAS1 pins

3

V

BIAS2

2*V

LCD

/3

BIAS1

V

LCD

/3

Liquid Crystal Display Controler supply current

I

LCD

Internal voltage generation

CFG.FCST=0

V

VDDIN

 = 3.6V

8.85

µA

V

VDDIN

 = 1.8V

6.16

External bias

V

LCD

=3.0V

V

VDDIN

 = 3.3V

0.98

V

VDDIN

 = 1.8V

1.17