OTP microcontrollers tackle noisy environments

Holtek Semiconductor has added three new OTP devices to its HT48RXX OTP microcontroller family.

Holtek Semiconductor has added three new OTP devices to its HT48RXX OTP microcontroller family.

These three devices, the HT48R05A-1, HT48R06A-1 and HT48RA0A encompass the usual features of Holtek's microcontroller series, and with their simplified internal structure and cost effective advantages, are placed firmly in the competitive OTP microcontroller market area.

The HT48R05A-1 and HT48R06A-1 are both I/O type microcontrollers and differ in their size of internal ROM, with the former having a capacity of 512 x 14bit and the latter 1K x 14bit.

The main difference between these devices and the other members of the HT48RXX family is their improved noise immunity capabilities.

In addition the devices also possess two internal frequency prescalers, allowing extended timer and WDT timeout periods.

Internally the devices have low voltage reset functions and can directly interface to a buzzer or provide a frequency output on an I/O pin.

With 18-pin DIL and SO packages available, the range of options is extremely flexible making them suitable for a range of applications such as electrical home appliances or many other areas where a general purpose microcontroller is required.

The HT48RA0A has 1K x 14bit of internal ROM and with the capability of transmitting a wide range of carrier frequency signals, is especially designed for and aimed at the home remote control application area.

The device has already been approved for use by a major Japanese manufacturer and will soon be supplied in large volumes.

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