UM982eb User Manual
I
Contents
1 Product Overview ......................................................................................... 1
2 Interfaces...................................................................................................... 4
3 Power Supply ............................................................................................... 6
3.1 3.3V LDO Power Supply .................................................................................................. 7
3.2 5V DC/DC Power Supply ................................................................................................. 8
3.3 Backup Power Supply ...................................................................................................... 9
4 Antenna circuit ........................................................................................... 10
4.1 Antenna Short Protection Circuit .................................................................................. 10
4.2 Antenna Feed Circuit ..................................................................................................... 11
5 LED Indicators ............................................................................................ 12
6 UM982 Peripheral Design .......................................................................... 14
7 Debug Support ........................................................................................... 16
Appendix ........................................................................................................... 17
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