This Tool is a frequency sweeper with 5V square wave output (Duty cycle 50%, effective frequency range from over 10kHz (max 50kHz) to 50Hz). This tool can be also considered as a MCU version of the software TMS-374 Decoder ECU. The only difference between the two tools is that the MCU version works without a PC.
The XPROG-m programmer is designed to replace the earlier version of XPROG programmer. The XPROG-m supports in-circuit and on-board programming of Motorola 68HC05, 68HC08, 68HC11, 68HC(S)12 family MCU's, Texas Instruments TMS370/TMS374 family MCU's and serial EEPROM's.