Technical information

November 15, 2008 G24-L Module Hardware Description 1
Chapter 1: Introduction
The G24-L is the newest member of Motorola's embedded cellular modules family.
Designed with quad band GSM capabilities, which supports all four GSM bands -
850/900/1800/1900 MHz, and with GPRS multislot class 10, G24-L can operate on any
GSM/GPRS network to provide voice and data communications.
The G24-L is similar to a condensed cellular phone core, which can be integrated into any system
or product that needs to transfer voice or data information over a cellular network. Thus, it
significantly enhances the system's capabilities, transforming it from a standalone, isolated
product to a powerful high-performance system with global communications capabilities.
The G24-L is designed as a complete GSM communications solution with all the controls,
interfaces and features to support a broad range of applications:
• A powerful audio interface.
• A large set of indicators and control signals.
• Several advanced power-saving modes.
• A variety of serial communications solutions.
• An optional battery charging interface for battery powered applications.
All these features and interfaces are easily controlled and configured using a versatile AT
command interface that provides full control over the G24-L operation.
The G24-L control and indication interface extends its capabilities beyond GSM
communications. This includes an A/D and GPIO interface, and a regulated output voltage for
supplying external circuits. With these interfaces, the G24-L can operate and control external
applications and receive feedback from external environment and circuits.
The G24-L interface design, using a single 70 pin board-to-board connector, through which all
application interfaces are managed, facilitates fast and easy integration. It significantly shortens
the development process, and minimizes the product's time to market.
The G24-L is extremely compact in size with a slim mechanical design, which makes it space
saving on the application board and easily fitted into any board design.
The advanced power supply management significantly reduces power consumption to a
necessary minimum and prolongs battery life.