User's Guide

ATOP3.5G Product Description
80447ST10636A rev.10 – 2015-03-03
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Mod. 0808 2011-07 Rev.2
8.8 Firmware update Over The Air (FOTA)
Considering the long lifetime of Telematics applications, it is mandatory to be able to update the
different software elements of an application over the air. To this purpose, ATOP 3.5G provides
multiple mechanisms:
 2 partitions of 27 MB for storing communication stack and virtual machine
o Dual boot mechanism, to switch between newer or older stack
o API to access to firmware versions
 Utility processor microcode update mechanism
 Update mechanism embedded in virtual machine for applications
8.9 Battery and power management
All voltage conversion and battery charging management are handled by ATOP 3.5G.
 Direct connection to mobile phone type battery
o Optional connection to coin cells for RTC
 Battery charging management
o Full hardware and software support of single cell Li-Ion, Li-Ion polymer battery
with voltage and charge current monitoring
 Support large voltage range: See Table 11
 Integration of all required LDO and DC-to-DC converters
Separate power supply pins are provided for microcontroller, RTC and the rest of the system, so
that each part can be separately disabled.
The utility microcontroller can be programmed to wake up ATOP 3.5G on external (CAN, GPIO ...)
or RTC events.
1 A are drawn by RTC standalone via an optional separate power supply.
8.10 OTP content
Storage in One Time Programmable memory (OTP) of critical parameters:
 IMEI
 Serial Number
 Assemly data, including week code, etc.
 ATOP 3.5G type description
 RF calibration parameters
 Essential NV items for proper 3GPP behavior