GCSE electronics student CLOCK IC TO 7 SEGMENT DISPLAY - Electronic Circuits Projects Diagrams Free

Will Rice · 5th January 2009, 05:19 PM

Hi,
For my electronic products GCSE I am creating a countdown circuit using a seven segment display (1 digit). However I have recently purchased an "Epson toyocom 4-bit realtime module Dil 18". The data sheets that have come with the product give outputs that don't seem to corrospond to the display.

THe inputs on the display are the normal c,b,a,f etc. If you could help me out on wiring the two components together it would be great becuase I'm very stuck!

Thanks very much
Will

audioguru · 5th January 2009, 06:38 PM

You forgot to tell us the part number of the Epson Toyocom clock IC.
Maybe it it the RTC-62421. Its datasheet is too brief. It says the IC is a copy of the OKI MSM6242.

The datasheet for the OKI IC says that its 4 data outputs drive a micro-controller IC, not a display.

Will Rice · 5th January 2009, 06:45 PM

Sorry! The part number is RTC-72421B and its been bought through rapid electronics. The address of the display is:

LED's/LCD's - LED Display - 7SR50011AS

Thanks
Will Rice

audioguru · 6th January 2009, 12:05 AM

The clock IC does not drive an LED display!
The clock IC sends data to a micro-controller that needs a program to interface with the clock IC and to convert the data to seven segments.
The micro-controller or another IC can drive your seven segment display.

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5th January 2009, 05:19 PM	#1
Will Rice	GCSE electronics student CLOCK IC TO 7 SEGMENT DISPLAY Hi, For my electronic products GCSE I am creating a countdown circuit using a seven segment display (1 digit). However I have recently purchased an "Epson toyocom 4-bit realtime module Dil 18". The data sheets that have come with the product give outputs that don't seem to corrospond to the display. THe inputs on the display are the normal c,b,a,f etc. If you could help me out on wiring the two components together it would be great becuase I'm very stuck! Thanks very much Will

5th January 2009, 06:38 PM	#2
audioguru	You forgot to tell us the part number of the Epson Toyocom clock IC. Maybe it it the RTC-62421. Its datasheet is too brief. It says the IC is a copy of the OKI MSM6242. The datasheet for the OKI IC says that its 4 data outputs drive a micro-controller IC, not a display. __________________ Uncle $crooge

5th January 2009, 06:45 PM	#3
Will Rice	Sorry! The part number is RTC-72421B and its been bought through rapid electronics. The address of the display is: LED's/LCD's - LED Display - 7SR50011AS Thanks Will Rice

6th January 2009, 12:05 AM	#4
audioguru	The clock IC does not drive an LED display! The clock IC sends data to a micro-controller that needs a program to interface with the clock IC and to convert the data to seven segments. The micro-controller or another IC can drive your seven segment display. __________________ Uncle $crooge