Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Clock generator 32kHz needed - as small as possible

Status
Not open for further replies.

frantak

Junior Member level 2
Joined
Sep 30, 2002
Messages
21
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
71
Clock generator 32kHz

Hello,
I need clock generator 32kHz (square 3,3V) for CPLD. Does anyboby know a suitable chip (as small as possible). Thanks.
FrantaK
 

mystery

Full Member level 2
Joined
May 9, 2001
Messages
124
Helped
4
Reputation
8
Reaction score
2
Trophy points
1,298
Location
Turkey
Activity points
825
Why dont you use a 32khz crystal oscillator ? it is simple and cheap .
 

penrico

Full Member level 5
Joined
Aug 28, 2001
Messages
286
Helped
27
Reputation
54
Reaction score
8
Trophy points
1,298
Location
Argentina
Activity points
2,395
I vote use a 32Khz cristal, remember, to drive it, you will need schotkly CMOS or input with high impedance gates, maybe you need to use an external standard CD40xx series to make the 32Khz oscilator.

Other solution if you have a CPLD, and other highter clock, you can divide the highter clock to obtain 32.768Khz
 

crazyduck

Full Member level 4
Joined
Sep 3, 2001
Messages
214
Helped
13
Reputation
26
Reaction score
6
Trophy points
1,298
Location
France
Activity points
2,010
Hello,
MAXIM semiconductor have DS32K. It gives a 32768 Hz signal, and it's temperature compensed.

CD :)
 

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top