HTB Datasheet, HTB Holtek DTMF Generators Datasheet, buy HTB DTMF IC. serial mode whereas the HTB contains a selectable serial/parallel mode interface for various applications such as security systems. HTA/HTB DTMF Generator With Serial Interface Features. Operating voltage: V~V Serial mode for the HTA Serial/parallel mode for the.

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Read times previous topic – catasheet topic. Still no tutorials however. I think what you want is an IC that takes something th9200b arduino can talk to easily, like serial, i2c, etc.

I’d really appreciate your help on this. Ah, I took another look at the datasheet and you’re right. I have these working so on to my next problem. X Y 1 Holtek reserves the right to alter its products without prior notification.

Thanks for any insight. Dimensions in mm Min. I don’t think this is the ideal IC for your purpose, because it’s set up to receive inputs from a key numeric pad. The relationship between the digital codes and the tone output frequency is shown in Table 1.

I think the serial interface would suit perfectly with the arduino but I may be wrong. Additional supplementary information with regard to packaging is listed datashwet.

HT9200B Datasheet PDF

As for the control timing diagram, ht92200b to Figure 1. Here is some code I wrote for that chip. To get it to work, you’ll have to get the arduino to mimic the electrical behavior caused by the capacitance change that happens when you press one of those buttons.


Would I just connect the data pin of the IC to the pin 1 of my arduino to send the serial data to it?

The applications mentioned herein are used solely for the purpose of illustration and Holtek makes no warranty or representation that such applications will be suitable without further modification, nor recommends the use of its products for application that may present a risk to human life due to malfunction or otherwise. Every digit of a phone number to be transmitted is selected by a series of inputs which consist of 5-bit data.

For the most up-to-date information, please visit our web site at http: Thanks in advance for any help. The relationship between the digital codes and the tone output frequency is illustrated in Table 2. Below is a datasheet for my IC and Dattasheet have spent many hours trying to get this to work He recommends Holtek B.

HT9200B Datasheet

It has a serial and a paralell interface. When the IC is operating in the parallel mode, these pins become floating. X Y Pad No.

However, Holtek assumes dztasheet responsibility arising from the use of the specifications described. The information appearing in this Data Sheet is believed to be accurate at the time of publication. As this information may be updated at regular datashset users are reminded to consult the Holtek website for the latest version of the package information.

I ht9200h searched the internet far and wide for the past few days and I have come up blank. Hi Guys, I just received my Arduino in the post a few days ago and have been having great fun with it. BroHogan God Member Posts: I promise to post start a build log for my alarm as soon as I know I can do it Actually, I think it may be a little complex to use serial mode after viewing this document.


I know I’ve seen threads from other people trying to interface Arduino to DTMF, maybe there’s a solution out there that you could adapt.

HTBSOP – Holtek – PCB Footprint & Symbol Download

I am currently building a burglar alarm with 2 Dataasheet sensors from sparkfun. I’m probably doing everything wrong as I am more of a programmer than electronic eng. The oscillator function can be implemented by Connect a standard 3.

As for the control timing diagram, see Figure 2. Functional operation of this device at other conditions beyond those listed in the specification is not implied and prolonged exposure ht99200b extreme conditions may affect device reliability. These are stress ratings only. Thus, these data input pins should not float. Datasheeet on the relevant section to be transferred to the relevant website page. Then the input data codes should be determined. When the IC is operating in the serial mode, this pin becomes floating.

Both modes produce the same basic tone pairs for digital dialing, corresponding to the keys:

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