ATSAM4LS4BA-AU View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

ATSAM4LS4BA-AU

ATSAM ARM-based Flash MCU

Atmel Corporation 

ATSAM4L8/L4/L2

9.9.7 Liquid Crystal Display Controler characteristics

Table 9-51. Liquid Crystal Display Controler characteristics

Symbol Parameter

Conditions

Min

Typ

Max

SEG

Segment Terminal Pins

40

COM

Common Terminal Pins

4

fFrame

LCD Frame Frequency

FCLKLCD

31.25

512

CFlying

Flying Capacitor

100

VLCD

BIAS2

BIAS1

LCD Regulated Voltages (1)

CFG.FCST=0

CFlying = 100nF

100nF on VLCD, BIAS2 and BIAS1 pins

3

2*VLCD/3

VLCD/3

1.

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

Units

Hz

nF

V

9.9.7.1

Liquid Crystal Controler supply current

The values in Table 9-52 are measured values of power consumption under the following condi-

tions, except where noted:

Table 9-52.

• 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 ILCD = IWAIT(Lcd On) - IWAIT(Lcd Off)

Liquid Crystal Display Controler supply current

Symbol Conditions

Min

Typ

Max Units

Internal voltage generation VVDDIN = 3.6V

CFG.FCST=0

ILCD

External bias

VVDDIN = 1.8V

VVDDIN = 3.3V

VLCD=3.0V

VVDDIN = 1.8V

8.85

6.16

µA

0.98

1.17

42023GS–SAM–03/2014

139

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