New Release HT82K95E/A - USB Keyboard OTP/Mask MCU

July 7, 2005

With almost all modern mother boards now incorporating several USB interfaces, and when added to the fact that Windows ME and XP now has the convenience of automatic device driver installation, the proliferation of USB devices has become a present day trend resulting in USB devices fast becoming the standard for future generation computer peripherals. Holtek is no newcomer to the USB interface, and has over the years accumulated much design experience in this area, in the process releasing several USB devices. Building on its past experience, Holtek is now pleased to announce the release of the HT82K95E/A USB Keyboard OTP/Mask MCU. Based on the years of accumulated excellent feedback from users of its predecessor HT82K96E device, the removed A/D function in the new HT82K95E/A devices, provide the advantages of increased cost-effectiveness while still retaining the high quality and reliability of its predecessor.

The main specification of the device is as follows:

4KX15 ROM and 160 byte RAM
32 bi-directional I/O
8-bit/16-bit Timer/Event interrupt controller
Watchdog timer
HALT and Wake-up function
8 Level stack
3 endpoints support (includes endpoint 0)
USB, PS/2 mode support
USB HID 1.1 class compatible

The special characteristics of the device are as follows:

Conforms to USB HID 1.1 specification compatible products
32 I/O pins 4Kx15 ROM SIZE, 160 byte RAM, providing ample memory space for USB product development
Can be used within Boot Device, Keyboard, and Mouse Products
Contains USB/PS2 interface auto detect function, suitable for USB/PS2 dual-interface products

Supporting Development Tools and Programmers:

To fully support the HT82K95E device, Holtek has developed a suite of HT-ICE Windows based development tools. With an easy to use Human interface, the fully functional HT-ICE and its corresponding device programmer provides the means for designers of USB related products to obtain the quickest design to market times.