UM1632 datasheet(21/32 Pages) STMICROELECTRONICS

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UM1632

Application setup

Preload the program into the STM8L1526-EVAL (details in the DALI SW DALI

description).

Note:

The current version was compiled with STVD 4.3.

Select jumper J3 (of STEVAL-ILM001V1).

1-2 shorted, the direct power supply is selected: the module is always supplied

with the same supply voltage as a controlling microcontroller (on

STM8L1526-EVAL kit).

2-3 shorted, a controlled supply is selected: the module is supplied through the

GPIO pin of the microcontroller, allowing disconnection of the receiver optocoupler

when not needed (e.g. during transmission), in order to lower the overall system

consumption.

Connect the DALI network cable on connector J1 (DALI DA). There is no need to pay

particular attention to wire polarity as there is an input diode bridge on the module.

Make the connections for the J2 connector on the STEVAL-ILM001V1 and

STM8L1526-EVAL as given in the table below and also connect the PD0 pin of the

STM8L1526-EVAL to the PA4 pin of the same board to determine the effect on LD1 on

the STM8L1526-EVAL board as shown in Figure 9.

Figure 6. Bottom side connectors

Table 10. Connections of STEVAL-ILM001V1 and STM8L Discovery board

STEVAL-ILM001V1 pins (J2)

STM8L Discovery pins

VDD (Pin 1)

3V3

GND (Pin 2)

GND

RX_Supply (Pin 5)

PB4

S1 (Pin 6)

PB5

DALI_TX (Pin 9)

PB1

DALI_RX (Pin 10)

PB0

UM1632 Datasheet(PDF) 21 Page - STMicroelectronics