In-Circuit Communication; Power Supply; Jumpers; Table 5. Plc Interface Control Signals - ST EVALCOMMBOARD Manual

UM0240
Table 5.
Pin number
20
28
The two PLC interface control signals are connected in the PLM board either to the GND or
to V and are used to detect which modem is mounted on the board. There are four
DD
possible configurations but only two are, at present, in use:
●
00 (GND,GND) for the ST7538
●
10 (GND,V
Table 6.
Pin number
6.5

In-circuit communication

The In Circuit Communication connector provides access to several debug features and to
the In Circuit Programming function that enables complete writing to the MCU Flash
memory.
6.6

Power supply

As described in
is power supply from different sources. If an external dedicated power supply is selected, it
must be in the 5V ÷ 35V range.
Taking into account that the board has a power consumption in steady state of
approximately 50mW, a value of 500mW is suggested.
The external power supply connector is a standard 2.5-mm phone jack that is compatible
with common PC notebook power supply connectors.
6.7

Jumpers

Five jumpers are present on the board to give flexibility on the use of reset management,
DAC reference voltage; In Circuit Communication and RS232 interface power supply.
PLC interface control signals
Signal name
B_ID_PLM_1
B_ID_PLM_0
) for the ST7540
DD
Power connections
Signal name
2 PLM_10V
4
6
22,34
Section 2: Power
Description
Board ID for PLM Applications (MSB)
Board ID for PLM Applications (LSB)
Description
10V power supply
VDD 3.3V/5V power supply
VDDF Digital power supply
GND Ground
supply, the ST Industrial Communication Board can take
Interfaces and connectors
Generated by
Modem
Modem
Generated by
Modem
Modem
Modem
Ground
19/39