AirPrime WISMO228

The AirPrime WISMO228 Intelligent Embedded Module is a self-contained GSM 850/EGSM 900/DCS 
1800/PCS 1900 quad-band embedded module that was specifically designed for M2M systems 
deployed all over the world.

Overall Dimensions

Length: 25.0 mm 
Width: 25.0 mm 
Thickness: 2.8 mm (excluding label thickness) 
Weight: 3.64 g

GSM/GPRS Features 

2 Watts GSM 850 radio section running under 3.6 Volts 
2 Watts EGSM 900 radio section running under 3.6 Volts 
1 Watt DCS 1800 radio section running under 3.6 Volts 
1 Watt PCS 1900 radio section running under 3.6 Volts 
Hardware GPRS class 10 capable

Interfaces 

VBAT power supply 
Digital section running under 2.8 Volts 
3V/1V8 SIM interface 
Power supplies 
Serial link (UART) 
Analog audio 
ADC 
Serial bus SPI for debug trace 
PWM0,1 and PWM2 for buzzer output 
GPIOs 
ON/~OFF 
TX burst indicator 
Embedded Module ready indicator 
Reset

Firmware 

Drives the AirPrime WISMO228 via an AT command interface over a serial port 
Full GSM/GPRS Operating System stack 
Real Time Clock with calendar

Connection Interfaces 

The AirPrime WISMO228 has a 46-pin castellation form factor which provides: 

One ANT pin for RF in/out 
Other pins for baseband signals