fms
Member level 2
Re: Schematics for ICD2
to ninjia:
first, did u read the rules and regulation? did u do the searching?
2nd, the main reason to replace CY7C64603 with 4550 is because CY7C64603 is no longer being produce. MICROCHIP is substituting it with 4550 where it is programmed to work exactly like the cypress chip. and wats even better is that MICROCHIP is producing the cheap themselves. save production cost and utilizesown product.
3rd, all needs hex or firmware. CY7C64603 uses some firmware which is stored in an external EEPROM. else MPLAB would not recognize what it is and there wouldn't be any communication.
hope that can clear u on ur doubts
feel free to ask.
to samir mistry:
search first k? tusb3410 actually converts data from usb to rs232. what differs here is actually the overall speed. it is not much different more than using a serial port. just a converter in the middle. 877a still have to wait to collect the 8 bits form the serial converter. as for the cypress o 4550, it converts the data straight to parallel so 877a can process the data directly. all bit reaches at the same time without having to convert it from serial to parallel again. u kno the the math
ps: SORRY if sounded to harsh everyone. (TO ninjia AND samir mistry as well.)
to ninjia:
first, did u read the rules and regulation? did u do the searching?
2nd, the main reason to replace CY7C64603 with 4550 is because CY7C64603 is no longer being produce. MICROCHIP is substituting it with 4550 where it is programmed to work exactly like the cypress chip. and wats even better is that MICROCHIP is producing the cheap themselves. save production cost and utilizesown product.
3rd, all needs hex or firmware. CY7C64603 uses some firmware which is stored in an external EEPROM. else MPLAB would not recognize what it is and there wouldn't be any communication.
hope that can clear u on ur doubts
feel free to ask.to samir mistry:
search first k? tusb3410 actually converts data from usb to rs232. what differs here is actually the overall speed. it is not much different more than using a serial port. just a converter in the middle. 877a still have to wait to collect the 8 bits form the serial converter. as for the cypress o 4550, it converts the data straight to parallel so 877a can process the data directly. all bit reaches at the same time without having to convert it from serial to parallel again. u kno the the math
ps: SORRY if sounded to harsh everyone. (TO ninjia AND samir mistry as well.)
