.

 

Will the CD4060BE divide the signal if I don't use it as an oscillator?

Yes

Will this module produce a suitable squarewave.

yes

How would I divide the output down to 1 Hz?

Look at 74LVC1G175. There are several types of 6-pin FF that will do the job with less footprint area.
74lvc1g175

 

The SN74LV8154 is a dual 16-bit counter that should count down the clock to 1Hz.

 

There are a number of Real Time Clocks ICs that can be programmed to output 1hz.
The MCP7940N is an 8 pin IC that you should look at.
Now if only your project has a micro-computer with I2C bus.

The PCF85063A can also be programmed to 1hz.
MCP79400/MCP79401/MCP79402 can also do the job.
I now believe most all 8 and 10 pin RTC can make 1hz square wave. There are many different versions. Here is a list digikey

 

You could use the CD4521 and a 4.194MHz crystal (but you would need a 10V supply to get it to run at that frequency.

 

Hi:

I am currently using a CD4060BE, a 32.768 Khz crystal etc. to generate a 1 Hz timebase.
I was thinking about using a 32.768 Khz oscillator module instead in order to reduce the
component count and because those crystals are a pain since they are so tiny. Here is a
link to the oscillator. https://www.analog.com/en/products/ds32khz.html

3 questions come to mind:
1) Will this module produce a suitable squarewave.
2) How would I divide the output down to 1 Hz?
3) Will the CD4060BE divide the signal if I don't use it as an oscillator?View attachment 339022

I use effectively the same circuit, but with a CD4536 to get the 1Hz output directly, without needing the additional divide by 2 stage.

 

Hi
That sounds good. I have 4 protoboards that are seriously loaded with components. So I can replace the
CD4060 and the CD4013 with the CD4536 and use an oscillator module. Excellent.

Thanks!

Yes, you can. I normally use it as a direct replacement for the CD4060, keeping the 32.768 KHz Xtal, capacitors and resistors. But if you wish to drive it with an external module, that's fine!

 

My two yen
The DS1307 is another RTC which can be used to obtain a 1 Hz pulse.
Like the previously mentioned RTC, you would require I2C to set the output.

 

I use effectively the same circuit, but with a CD4536 to get the 1Hz output directly, without needing the additional divide by 2 stage.

Can you actually get that to oscillate with a crystal? From the datasheet, it doesn't look as though it has the right bits and pieces to make a Pierce oscillator.

 

Can you actually get that to oscillate with a crystal? From the datasheet, it doesn't look as though it has the right bits and pieces to make a Pierce oscillator.

Yes, it works fine if wired as below (sorry for the bad drawing!). I've only used it with the 32.768 KHz Xtal, but it even runs at <3v with a change of resistors. Then the 1M needs to be 680k and the 330k lowered to 100k. The 15pF cap really needs to be a trimmer to get absolute accuracy!
Pin 4 is useful to measure the actual oscillator frequency.

 

Yes, it works fine if wired as below (sorry for the bad drawing!). I've only used it with the 32.768 KHz Xtal, but it even runs at <3v with a change of resistors. Then the 1M needs to be 680k and the 330k lowered to 100k. The 15pF cap really needs to be a trimmer to get absolute accuracy!
Pin 4 is useful to measure the actual oscillator frequency.

View attachment 339077

I'm surprised that it works. The Pierce oscillator needs a linear amplifier, and trying to put linear feedback around 5 gates in series usually makes it oscillate. It's got a Schmitt trigger which rather precludes making a linear amplifier.

 

I'm surprised that it works. The Pierce oscillator needs a linear amplifier, and trying to put linear feedback around 5 gates in series usually makes it oscillate. It's got a Schmitt trigger which rather precludes making a linear amplifier.

Yes, strange, but it does! I've just had another look at the internal circuit diagram, and wonder if it could also be made to work by using pin 14 as the input, with pin 4 as the output. I'll have to try it when I get a moment.