User's Manual
Table Of Contents

H350 LGA Serials Module Hardware User Manual Page of
43
18
22 USIM_D+
High speed SIM card USB+(not
support)
21 USIM_D-
High speed SIM card USB- (not
supported)
I
2
S
18 I2S2_CLK0 O T T I2S2 l Clock SCLK0
14 I2S2_WA0 O T T I2S2 word alignment select
15 I2S2_TX O T T I2S2 transmit line
16 I2S2_RX I T T I2S2 receive line
USB
31 USB_DP I/O USB+
32 USB_DM I/O USB-
33 VBAT I USB Power supply
I
2
C
20 I2C_SDA I/O PU PU
I2C data line,
4.7K resistor pulled up inside the
module
19 I2C_SCL O PU PU
I2C clock line
4.7K resistor pulled up inside the
module
UART1
12 UART1_RI O L L UART1 Ring Indicator
56 UART1_DSR I T T UART1 DTE, DTE Ready
55 UART1_DTR O H H UART1 DCE, Module Ready Indicator,
57 UART1_DCD O L L UART1Carrier Detect
10 UART1_CTS I PU PU UART1 Clear To Send
11 UART1_RTS O L L UART1 Request To Send
8 UART1_TXD O PP PP UART1 Transmitted Data