Pin Description - Sierra Wireless WISMO228 Product Technical Specification & Customer Design Manuallines

Pin Description

Pin # Signal
Speaker output
1 SPKP
positive 32 ohms
Speaker output
2 SPKN
negative 32 ohms
Microphone input
3 MICP
positive
Microphone input
4 MICN
negative
AUX_ADC Analog to digital
5
0 converter
Power supply for RTC
6 BAT-RTC
backup
WISMO_R
7 2.8V WISMO Ready
EADY
8 SIM-VCC SIM power supply
9 SIM-CLK SIM clock
10 SIM-IO SIM data
11 ~SIM-RST SIM reset
12 ~RESET input reset signal
13 SPI-IO 2.8V SPI data input
14 SPI-O 2.8V SPI data output
15 SPI-CLK 2.8V SPI clock output
16 GPIO3 2.8V GPIO
2.8V SPI chip select
17 ~SPI-CS
output
2.8V TX Burst
18 TX_CTRL
Indicator
WA_DEV_W228_PTS_002
Table 45. WISMO228 Castellation Pin Description
Description I/O
Analog
Analog
Analog
Analog
I
I
O
O
O
I/O
O
I
I/O
O
O
I/O
O
O
Rev 001
Product Technical Specification &
Customer Design Guidelines
Pin # Signal Description
24 GPIO1 2.8V GPIO
2.8V SPI interrupt
25 SPI-IRQ
request input
26 GND Ground
27 NC Not connected
28 GND Ground
29 VBATT Power supply
30 VBATT Power supply
31 GND Ground
32 NC Not connected
33 NC Not connected
34 BUZZER 2.8V Buzzer PWM2
35 PWM1 2.8V DC PWM 1
36 PWM0 2.8V DC PWM 0
Power On control
37 On/~OFF
signal
CT103/T 2.8V UART1:
38
XD* Transmit data
~CT105/ 2.8V UART1:
39
RTS* Request to send
CT104/R 2.8V UART1:
40
XD* Receive data
~CT106/ 2.8V UART1: Clear
41
CTS* to send
I/O
I/O
I
Ground
-
Ground
I
I
Ground
-
-
O
O
O
I
I
I
O
O
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