RS232 emulates I2C for 24cXX memory programming
Sometimes you need quick an easy solution for programming serial EEPROM memory chips. I think easiest and well known method is to use simple programmer adapter with very few components:
This adapter is connected to RS232 port and there is no need for additional power supply as it comes form PORT pin. Adapter is compatible with JDM Programmer, so you can use its programming software like IC-PROG. Just make couple settings and you are ready to go:
Download IC-PROG – it’s free.
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March 5th, 2007 at 7:38 pm
Is it correct that the Clock and Data lines are connected to the RTS (pin 7) and DTA (pin 4) pins of the RS232 cable?
That seems odd. I’d think it would be connected to RTS and TXD pins.
March 6th, 2007 at 12:23 pm
I guess this depends on IC-Prog settings.
March 6th, 2007 at 6:30 pm
I’m guessing it pulls current from the TXD pin, given this pin goes into the voltage regulator.
The other pins can easily be toggled in VBasic, and TXD can’t.
That makes sense.