HT82K94A - Holtek Semiconductor

HT82K94A USB Multimedia Keyboard Encoder 8-Bit MCU

This device is an 8-bit high performance RISC architecture microcontroller designed for USB product applications. It is particularly suitable for use in products such as keyboards and keyboard with calculator. A HALT feature is included to reduce power consumption. The mask version HT82K94A is fully pin and functionally compatible with the OTP version HT82K.

Features

· Operating voltage: fSYS=6MHz: 2.3V~5.5V fSYS=12MHz: 3.0V~5.5V
· 40 bidirectional I/O lines (max.)
· 8-bit programmable timer/event counter with overflow interrupt (shared with PD4, vector 08H)
· 16-bit programmable timer/event counter and overflow interrupts (shared with PA7, vector 0CH)
· Crystal oscillator (6MHz or 12MHz)
· Watchdog Timer
· PS2 and USB modes supported
· USB 2.0 low speed function
· 4 endpoints supported (endpoint 0 included)
· 6144´16 program memory ROM
· 224´8 data memory RAM
· One internal USB interrupt (vector 04H)
· All I/O ports support wake-up options
· HALT function.