Lcd Panel; Sa1111 - Applied Data Systems Bitsy User Manual

Bitsy User's Manual

4.8.3 LCD Panel

LCD display panels have a wide range of voltage and data requirements. The Bitsy has a number
of adjustable voltages to support these requirements.
PNL_PWR:
VEE:

4.8.4 SA1111

Compact Flash Port
Outputs:
Inputs:
Digital I/O:
As Digital Outputs:
As Digital Inputs:
4.8.5 SA-1110
As Digital Outputs:
As Digital Inputs:
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Voltage is 3.3 or 5V, depending on setting of JP3.
Must be set to match panel specifications.
Bias voltage used for many passive panels.
Can be positive, negative or fixed at "26V" (from JP1 and JP2). Selected with J7.
Voltage and current range can be changed at the factory for specific panels or needs and
can be modified by the user through control of the PWM settings of the AVR
microcontroller.
Push-Pull CMOS ( 0-CARDBVcc )
Maximum output current: 4 mA
CARDBVcc = 3.3V:
Logical Low < .325 CARDBVcc
Logical High >.475 CARDBVcc
CARDBVcc = 5V
Logical Low = < .8V
Logical High = >.2.4V
Push-pull 3.3V CMOS
Maximum output current: 2 mA
CMOS, V =3.3V (3.6V max)
DDX
Logical low @ <0.2 V
DDX
Push-pull 3.3V CMOS
Maximum output current: 2 mA
CMOS, V =3.3V (3.6V max)
DDX
Logical low @ <0.2 V
DDX
, logical high @ > 0.8V
DDX
, logical high @ > 0.8V
DDX
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