FLEX105 EVIDENCE, FLEX105 Datasheet - Page 33

• Manufacturer Part Number: FLEX105
• Description: FLEX Multibus RS422 Module
• Manufacturer: EVIDENCE

Specifications of FLEX105

• Silicon Manufacturer: Microchip
• Application Sub Type: FLEX Multibus RS422 Module
• Kit Application Type: Communication & Networking
• Kit Contents: Board, CD
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3 Architecture
Figure 3.24: The UART RS485 module.
Figure 3.25: The UART RS485 module layout.
• JP3 in position 1-2 enables the transmission (TX) from the signal TXEN of mi-
crocontroller (1 = ON); in position 2-3 enables the TX; if open disables the TX.
Figure
3.25
shows the module layout with the location of the various jumpers.
I2C module
This module can be used to connect in a safe way an I2C bus to one of the I2C peripherals
of the dsPIC. The protection includes protection from spikes, as well as hot inserction
and hot extractions.
SPI module
The module can be used to export one of the SPI peripheral pins which are available
on the dsPIC (see Figure 3.26). Moreover, the module has a set of components which
are used to protect the microcontroller pins from input signals which are not compatible
with the specifications.
The module has four jumpers named JP1, JP2, JP3 and JP4 which can be used to put
in high impedance respectively the digital output, clock, digital input and chip select
signals. Figure
3.27
shows the module layout with the location of the various jumpers.
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