Datasheet

4D SYSTEMS PICASO Processor
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PICASO PROCESSOR
4. Pin Configuration and Summary
PICASO Processor Pin Out
Pin
Symbol
I/O
Description
1
IO1
I/O
General Purpose IO1 pin. This pin is 5.0V tolerant.
2 XR A
4-Wire Resistive Touch Screen Right signal. Connect this pin to XR or X+
signal of the touch panel.
3 YU A
4-Wire Resistive Touch Screen Up signal. Connect this pin to YU or Y+ signal
of the touch panel.
4 SCK O
SPI Serial Clock output. SD memory card use only. Connect this pin to the SPI
Serial Clock (SCK) signal of the memory card.
5 SDI I
SPI Serial Data Input. SD memory card use only. Connect this pin to the SPI
Serial Data Out (SDO) signal of the memory card.
6 SDO O
SPI Serial Data Output. SD memory card use only. Connect this pin to the SPI
Serial Data In (SDI) signal of the memory card.
7
RESET
I
Master Reset signal. Connect a 4.7K resistor from this pin to VCC.
8 SDCS O
SD Memory-Card Chip Select. SD memory card use only. Connect this pin to
the Chip Enable (CS) signal of the memory card.
9, 20, 25, 41
GND
P
Device Ground.
10, 19, 26,
38, 57
VCC P Device Positive Supply.
I = Input, O = Output, P = Power, A = Analogue