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| SAM4L Datasheet, PDF (1143/1185 Pages) ATMEL Corporation – ATSAM ARM-based Flash MCU | |||
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ATSAM4L4/L2
42.8.7 Liquid Crystal Display Controler characteristics
Table 42-48. 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
42.8.7.1
Liquid Crystal Controler supply current
The values in Table 42-49 are measured values of power consumption under the following con-
ditions, 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 ILCD = IWAIT(Lcd On) - IWAIT(Lcd Off)
Table 42-49. 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
42023CâSAMâ02/2013
1143
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