The HT-VDS81W Development system is provided as the development tool for the HT81R03/HT81R36 Easy Voice programmable devices. The system contains the tools to develop and setup the required voice and key features required as well as OTP download tools.

HT-VDS81W Development System Hardware Kit

For this system the only hardware required is that to program the HT81R03/HT81R36 OTP devices. To do this two convenient and easy methods are available. The first of these is the Holtek supplied HT-Writer while the second is a commercially available writer from Hi-Lo systems. Note that currently the Hi-Lo systems programmer can program HT81R03 only, HT81R36 is not applicable.

Note:

• Part Numbers including "R" are OTP devices while others are mask version devices.
• For HT81006 and HT81012, the higher voice capacity OTP devices are available for product development and verification purposes.