User Manual

GE863-PRO
3
Product Description
80285ST10036a Rev. 1 DRAFT- 24/04/08
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 31 of 53
4 ARM9 Application Engine
4.1 General Description
The Application engine is an ATMEL AT91SAM9260 and comprises an ARM926EJ-S processor with
fast ROM and RAM plus power management and 8Mbyte SDRAM 100MHz and a 4Mbyte serial flash.
The ARM926EJ-S has a full set of peripherals ranging from several USART to the USB Host
controller, allowing almost any connectivity to be achieved.
The ARM has two clock sources, a 6MHz crystal oscillator clock source providing the main clock that
can be multiplied up to 200MHz and the internal RC slow clock source providing 32KHz. If more
accuracy in the 32KHz clock is needed, then an external 32KHz crystal can be added.
4.2 Supply voltage
The external power supply must be connected to VBATT2 signal pin (see Hardware User Guide) and
must fulfill the following requirements:
Nominal operating voltage
3.8 V
Operating voltage range
3.4 V – 4.2 V
Absolute Minimum voltage
3.30V
Absolute Maximum voltage
4.50 V
NOTE: Operating voltage range must never be exceeded; care must be taken in order to fulfill
absolute min/max voltage requirements.
4.3 Power consumption
The typical current consumption of the ARM9 part of the Telit GE863-PRO
3
module is:
Power off current (typical)
< 1.5 µA
Stand–by current @ slow clocking
1 mA [ TBD ]
Operating current typical @ 200MHz
140 mA [ TBD ]
The total power consumption of GE863-PRO
3
is the sum of the consumptions of GSM and ARM9
processor part.