ATT77025/7027 Programmer’s User Manual
ATT7025/7027 programmer is used to load a program in the memory of ATT702X. It uses another ATT7025 (Host MCU) which communicates with PC and target MCU. The PC transfers the program code and corresponding checksum to a flash chip connected with host MCU through serial port. User can start programming by clicking the button on PC or the red button on programmer board (without PC). The programmer will verify after finishing programming.
To install the ATT7025/7027 programmer hardware:
(1) Connect the programmer to the serial port of PC using RS232 interface cable.
(2) Connect an external power supply to the programmer. The voltage of the power supply must be between 9V and 15V.
Software Description
(1) Run OnePortPro.exe
(2) The main window is shown below:
1) OpenPort Open the serial port of PC
2) Openfile Open Intel hex file and and display program code in program buffer
3) FlashErase Erase 64K flash chip connected to host MCU
4) FlashWritten Transfer program code to the 64K flash chip connected to host MCU and calculate the checksum displayed in edit box “Checksum1”.
5) GetChecksum Read back the program code loaded to 64K flash chip and calculate another checksum displayed in edit box “Checksum2”. If the data in “Checksum1” is the same as the data in “Checksum2”, that indicates the program code loaded in 64K flash chip is correct.
6) TargetErase Erase the target chip (need to be programmed) which user puts in the socket
7) PFPM Program the code in 64K flash chip into the target chip’s flash memory
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