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EsduinoXtreme User Guide - Appendix

Article Index
EsduinoXtreme User Guide
Overview of Features
Setting Up the Hardware
Application Programming
Software Debugging
Software Considerations
Software Considerations - Interrupts
Software Considerations - S12 Clock
Hardware Details
All Pages


Electrical specifications

Input Voltage: Optional connectors J6 or J7 will accept a positive voltage from 7-12 Volts DC to provide VIN when a USB connection or USBDMLT pod connection to a host computer is not used.
Operating Current: 50 mA nominal. The on-board regulators can provide up to 700 mA, so external circuitry connected to the headers can safely be powered from the regulator.  The total current that may be drawn before the voltage regulator's thermal shutdown circuit engages depends on the input voltage and ambient temperature.
Operating Temperature Range: -20 C to +70 C (
Note:  the temperature range is limited mainly by the rating of the crystal.  A broader range of -40 C to +85 C can be accommodated by using an extended-temperature range crystal or the internal 1 MHz oscillator.
Board Dimensions (nominal):  2.70"(68.7mm) x 2.1"(53.4mm) x 0.475"(12mm), excluding connectors

Notes on Serial Monitor

EsduinoXtreme comes pre-programmed with a serial monitor in the topmost 2K of Flash memory.  This monitor is based on Freescale's Application Note AN2548, adapted for 9S12GA240 by Technological Arts.  It is designed to function using the SCI0 interface at 115200 baud with an 8 MHz crystal, which it boosts to 24MHz using the PLL.  Besides activating the PLL, it moves the RAM block and EEPROM block, via the INITRM and INITEE registers, to various addresses, depending on the MCU variant.  To learn more about these details, or to customize options (such as which SCI to use, which port pin for the Load/Run selection, bus frequency, etc.), download and open the the serial monitor project in CodeWarrior, where you can view and modify the .def and .asm files, as required.  After building the modified project, the new s-record file will have to be burned into flash using a BDM pod (e.g. USBDMLT from Technological Arts).  You'll find the the serial monitor project in the Technological Arts Support Library, at:

Last Updated ( Friday, 08 February 2019 18:14 )