1
Getting started
1.1
Safety precautions for use
The
evaluation board has a level of radiated emissions that exceeds the limit for class A
devices. Therefore, the user must add a proper shielding metal enclosure (Faraday cage) in the setup of the
evaluation environment of the board.
There are two peaks exceeding the limit to be observed for EU, FCC and ISED, the first at 324 MHz and the
second at 755.94 MHz, respectively exceeding for 11.6 dB µV/m and 1.0 dB µV/m.
Danger:
People with active implanted medical devices shall not use this evaluation kit, as safety related to
radiated emissions is not guaranteed.
1.2
Features
•
high-performance MCU embedding ARM
®
32-bit Cortex
®
-M7 CPU with FPU, Chrom-ART
accelerator, and DSP instructions
•
octal high-speed digital input current limiter with SPI interface
•
dual-channel self-powered digital input current limiter
•
galvanic isolated octal high-side smart power solid-state relay with SPI interface
•
quad low-side intelligent power switch
•
Main supply voltage: 18 - 32 V (24 V nominal)
•
•
3.5" TFT display with multitouch capability interfaced through dedicated parallel, digital RGB ports and I²C
lines
•
-based display back-light LED driver with controllable intensity
•
Morpho connectors for expansion connectivity options
•
Screw connectors for safer power supply and industrial IO connections
•
USB connector for alternate 5 V source power supply (only for display powering and MCU programming/
debug)
•
Isolated USART port connector
•
SWD connector for debugging and programming
•
Status LEDs for inputs, outputs, and various fault conditions
•
Debug LEDs
•
Reset button
•
Protections against surge, EMI, and input reverse voltage connection
•
EMC pad and four-layer routing
•
On-board RAM and serial Flash (ROM)
•
Provision for RTC, USB (with one or more additional components to be mounted)
•
Designed to meet IEC industrial standard requirements
•
RoHS
1.3
Hardware architecture
The following block diagram shows the
UM2933
Getting started
UM2933
-
Rev 1
page 3/42
