Nxp Semiconductors JN5169U0 用户手册

NXP Semiconductors

UM10929

JN5169-USB-Dongle User Manual

UM10929

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User manual

Rev. 1.1

— 30 November 2015

8 of 14

Fig 5.

Program devices window

2.3.3 LEDs

There are two surface-mounted LEDs that can be controlled by the JN5169 wireless
microcontroller (see

Fig 2

for locations):



LED D1 (green)



LED D2 (orange)

Both LEDs are connected to DIO16 and DIO17. These DIOs can be used to control the
LEDs as indicated in the

Table 1

Table 1.

DIO control of LEDs

DIO17

Low

High

DIO16

Low

D1: Off

D2: Off

D2: On

High

D1: On

D1: Off

D2: Off

2.3.4 32-kHz crystal oscillator

The JN5169 device has an internal 32-kHz RC oscillator. In order to provide more
accurate system timings, an external 32-kHz crystal can be used with the device. This is
provided on the JN5169 USB dongle and can be enabled from the JN5169 application
using the JN5169 Integrated Peripherals API - refer to the JN5169 Integrated Peripherals
API User Guide (JN-UG-3087).