| ??? 02/21/08 09:54 Read: times |
#151230 - pin assignments Responding to: ???'s previous message |
dear mr. Andy Neil,
i have replaced new ic and tested it. still i get the same output.i am sending u the pin out connections of the rtc with the micro controller. micro controller <--> rtc ------------------------- P0<---->ad0-ad7 ALE(pin 30)---->AS !RD(pin16)----->Data strobe ;no other connections are made to the !RD pins !WR(pin17)----->R/W ;no other connections are made to the !WR pins other rtc connections; MOT,CS,--->GND; intel bus timimg is selected. RST-->Vcc; rest all i have left as no connection(SQW and IRQ). note: the other micro controller pins such as !PSEN , RST, XLAT0, XLAT1 and the max232 connections are made accordingly. and i am pretty sure about them. please tell me if there are any wrong connections. |
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