Hi-Link HLK-B40, User Manual

Page: 5 / 19

User Manual
HLK-B40
Pins Symbol.
IO
Type
Functions
1 GND GND Power source
2 MIC_BIA - Keep the functionality
3 MIC_IN - Keep the functionality
4 VMID - Keep the functionality
5 AOUT_P - Keep the functionality
6 AOUT_N - Keep the functionality
7 RESET I Reset restart module, high level is effective,
8 VCHG PWR Charger input, prohibited without battery
9 VBAT PWR The power supply is input to DC3.3V and the
10 GND GND Power source
11 VDDIO - Keep the functionality
12 PD7 - Keep the functionality
13 PD6 - Keep the functionality
14 PD5 - Keep the functionality
15 PD4 - Keep the functionality
16 PC7 O Module Sleep State Output, High: Full Speed,
17 PC6 I
Module Hibernation
Control Input High: Go into hibernation, Low:
Exit Hibernation, Suspend as High
18 PC5 I
Function key input, low level is valid,
suspension is high
19 PA3 - Keep the functionality
20 PA2 - Keep the functionality
21 PA1 - Keep the functionality
22 PA0 - Keep the functionality
23 UART0_ O The module serial output
24 UART0_ I Module serial input