CEC1736 Development Board
User’s Guide
2022 Microchip Technology Inc. and its subsidiaries
DS50003324A-page 12
Chapter 4. Powering the CEC1736 Development Board
The CEC1736 Development Board can be powered directly through the USB micro-B
port of the USB-Serial converter (P2 and/or P3). The 5V input from the USB voltage rail
is regulated to 3.3V by an MCP1826S voltage regulator.
Optionally, the CEC1736 Development Board can be powered by an external power
supply through the Power Plug (P1). The 5V is regulated to 3.3 V, which is the same as
using USB micro-B port. This option is selected by J1 1-2, default is 2-3 power thru
USB.
A shunt diode (D1) can be used to allow measurement of the total system power con-
sumption when using the USB micro-B port or a jumper (J1) is provided to allow mea-
surement of the total system power consumption when using an external power supply.
After the board is powered, LED1 (+5V), LED2 (+3.3V), and LED3 (+1.8V) should be
turned on.
LED9, LED10, LED11 can be blinking depend on the MEC1723 Firmware Application,
which indicate that the MEC1723 Firmware is loaded & executing.
LED4, LED5, LED6, LED12 can be blinking indicating that the CEC1736 Soteria Firm-
ware is loaded and executing.
Power-Up as shown below:
