Neoway WM620 - Pin Definition

WM620 Hardware User Guide
Copyright © Neoway Technology Co., Ltd
5
 The figure shows main application pins. Select pins based on product requirements and leave pins
that are not used unconnected.
 For more details about pins, see the pin description.
 JTAG pins have not be open to customers.
2.2 Pin Definition
Table 2-1 WM620 pin definition
Pin No.
Pin Name
I/O
Function
Level
Feature (V)
Remarks
Power Supply and Switch Interfaces
22, 23
VBAT
PWR
Main power supply
3.3 V to 4.2 V
26
VDD_1.8V
PWR
1.8 V power supply
output
Continuous voltage
output after the
module is on
27
VDD_2.6V
PWR
2.6 V power supply
output
47
VRTC
PWR
RTC power supply I/O
1.5 V to 3.25 V DC
Typical value: 3.0 V
46
ON_OFF
I
On/Off control
Internally pulled up
to 1.8 V by 200K
25
RESET
DI
Hardware reset pin
VDD_1.8V
1, 12, 17,
21, 24,
34, 43,
45, 50, 61
GND
PWR
Ground
Audio Interface
28
EAR_P
AO
Earphone amplifier
output (+)
Keep not connected
(NC) if not used
29
EAR_N
AO
Earphone amplifier
output (-)
30
MIC_1N
AI
Microphone #1 input (-)
Keep NC if not used
31
MIC_1P
AI
Microphone #1 input (+)
32
MIC_2P
AI
Microphone #2 input (-)
Keep NC if not used
33
MIC_2N
AI
Microphone #2 input (+)
35
SPK_P
AO
Speaker amplifier output
(+)
Keep NC if not used
36
SPK_N
AO
Speaker amplifier output
(-)
Keep NC if not used