I'm new here, hence forgive any mistake i might commit unknowingly.
I've read a lot of threads about max232 and related problems, but i didn't find any substantial solution hence i have to post this.
I have 2 Max232CPE and one Max232N. I connected the 10uF caps as given in datasheet and rechecked their polarity. My DB9 is good.when i connect the "CPE" i get garbage value on the flashmagic terminal. For "N" there is no o/p at all. I dont have multimeter and other test equiments, so i connected led to pin 12 of max232.For both "CPE" and "N" led blinks when data is sent. for both when i short 11 and 12 there is no o/p.
For the "CPE" when 11 isn't short with 12, it gives garbage.Is this because of wrong caps or some other issue?
what are best ways to fully test max232 chips.
i heard about ds275, and that it doesnt require caps, is it good for 89c51,89s52 and P89v51rd2 ???
plz reply,
thnx
I've read a lot of threads about max232 and related problems, but i didn't find any substantial solution hence i have to post this.
I have 2 Max232CPE and one Max232N. I connected the 10uF caps as given in datasheet and rechecked their polarity. My DB9 is good.when i connect the "CPE" i get garbage value on the flashmagic terminal. For "N" there is no o/p at all. I dont have multimeter and other test equiments, so i connected led to pin 12 of max232.For both "CPE" and "N" led blinks when data is sent. for both when i short 11 and 12 there is no o/p.
For the "CPE" when 11 isn't short with 12, it gives garbage.Is this because of wrong caps or some other issue?
what are best ways to fully test max232 chips.
i heard about ds275, and that it doesnt require caps, is it good for 89c51,89s52 and P89v51rd2 ???
plz reply,
thnx
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