Neoway WM620 - Page 13

WM620 Hardware User Guide
Copyright © Neoway Technology Co., Ltd
6
UART Interface
52
CTS
I
UART to send data
VDD_2.6V
At most 3 V input
Not support
firmware update
53
RTS
O
UART ready for
receiving data
VDD_2.6V
54
RXD
I
High-speed UART
receive data input
VDD_2.6V
55
TXD
O
High-speed UART
transmit data output
VDD_2.6V
SIM Card
13
USIM_VCC
PWR
USIM card power supply
1.8V/3V
14
USIM_RST
O
USIM card reset
1.8V/3V
15
USIM_DATA
I/O
USIM card data
1.8V/3V
Externally pulled up
to USIM_VCC by
10K
16
USIM _CLK
I/O
USIM card clock
1.8V/3V
USB Interfaces
18
USB_D+
I/O
High-speed USB
differential USB data (+)
Used for firmware
updating
19
USB_D-
I/O
High-speed USB
differential USB data (-)
20
V_BUS
PWR
USB power supply
Voltage range: 3.3 V
to 5.25 V
Antenna
44
ANT_M
AI/AO
RF I/O
LED Indicator
48
SIG_LED
O
Network indicator
VDD_2.6V
SMS and Incoming Call Ring
51
RING
O
Indicating an incoming
call or message
VDD_2.6V
Sleep Mode Controlling
60
SLEEP_IN
DI
Controlling the sleep
mode
VDD_1.8V
ADC
49
ADC
AI
12-bit ADC input
Voltage range: 0 V
to 2.2 V
Reserved Pins
2-11,
37-42,
56-59, 62
NC
NC