3.2
ST8500 module
Figure 5.
EVALMODST8500-1 image
The EVALMODST8500-1 is connected to the base board through 2 connectors:
•
J201 line connector to interface the PLC to the AC or DC line
•
J200 digital and supply connector to interface the module to the STM32 microcontroller.
The basic interface between the STM32 host controller and the ST8500 includes the following lines:
•
UART RX/TX as ST8500 host interface
•
RESETn signal (active low)
•
BOOT1 to control the ST8500 boot mode
•
LPMODEn to control the ST8500 low power mode (active low)
•
UART Trace TX to output firmware binary traces for debug.
Two DC voltages are provided to the ST8500 module:
•
12 V to supply the STLD1 line driver
•
3.3 V to supply the ST8500 section (including 1.1 V on-board DCDC input and 2.5 V integrated LDO input).
indicates the main sections on the ST8500 module.
Figure 6.
EVALMODST8500-1 overview
UM2838
ST8500 module
UM2838
-
Rev 1
page 6/15