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Programming Teridian Meter ICs
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Programming Teridian Meter ICs
This Application Note describes interfaces, tools, precautions, and processes that are to be used for programming
the flash memories of the Teridian 71M651X, 71M652X, and 71M653X Energy Meter ICs.
In addition, recommendations are given for the design of meter boards that ensure that program code can be
erased and reloaded under all circumstances.
Programming Tools
The simplest approach to programming the Teridian meter ICS is to use one of the existing tools. Programming tools currently available are:
• TFP2 Flash Programmer
• ADM51 ICE (In-circuit emulator)
• Third-party programmers
The TFP2 Flash Programmer
The TFP2 is available from Teridian at a very affordable price. It is capable of programming the target IC in the
target circuit. Operation is manual by pushing a button to initiate the programming process, but can also be con-
trolled by ATE equipment. It is easy to combine several TFP2 devices in parallel to achieve higher throughput.
The target code can be loaded into the TFP2 using a serial cable and HyperTerminal or any other terminal pro-
gram. The operational code for the TFP2 can be field-upgraded. The latest firmware for the TFP2 at the time of
editing this document is revision 1.51.
The target-interface cable of the TFP2 can be a simple twisted cable terminated with a 0.1” header connector. In
addition, the TFP2 provides the TYCO/AMP 10x2 high-density connector compatible with the connector used by
the ADM51 ICE. This connector includes access to the ICE_E signal (used for the 71M652X and 71M653X ICs) on pin 2.
Simple programmers may be implemented using the TFP2 and an external customer-supplied PCB with a socket
that accommodates the target IC. See section Required Hardware Adjustments for a description of the necessary pin connections.
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