User's Manual

TM70Pi V3.2 (11/03) 120021.pdf. 29
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9.2 - INTERNAL CONNECTION
POWER SUPPLY and I2C BUS
The LE73/74/7EF card provides 3V3 and GND signals to power on the display module
through P6 connector marked as “LCD” in the PCB, as well as the SDA and SCL I2C bus
signals, using a 4 wire coloured braid cable, code IKUSI 1095083.
PIN NAME
DESCRIPTION
1 3V3 3.3 V DC Power Supply
2 SCL I2C Clock
3 SDA I2C Data
4 GND Ground
RANGE LIMITER
The LCD70 display provides a connector for the range limit option; the used cables and
signals are as follows: 5V, DATA y GND. These cables are connected to the LE73/74/7EF card
through P8 connector, “LAL” marked in the PCB, using a 3 colour braid cable code IKUSI
1095082.
PIN NAME
DESCRIPTION
1 5VIR 5 V DC power supply
2 DATA Range Limiter Data
3 GROUND Ground