HT82K68E Datasheet, PDF (1/40 Pages) Holtek Semiconductor Inc – Multimedia Keyboard Encoder OTP

Preliminary
HT82K68E
Multimedia Keyboard Encoder OTP
Features
· Operating voltage: 2.8V~5.5V
· 34(42-pin)/32(40-pin) bidirectional I/O lines
· One 8-bit programmable timer counter with
overflow interrupts
· Crystal or RC oscillator
· Watchdog Timer
· 3K´16 OTP EPROM
· 160´8 data RAM
· HALT function and wake-up feature reduce
power consumption
· Six-level subroutine nesting
· Bit manipulation instructions
· 16-bit table read instructions
· 63 powerful instructions
· All instructions in 1 or 2 machine cycles
· 40/42-pin DIP package
General Description
The HT82K68E is an 8-bit high performance
peripheral interface IC, designed for multiple
I/O products and multimedia applications. It
supports interface to a low speed PC with
multimedia keyboard or wireless keyboard in
Windows 95, Windows 98 or Windows 2000 en-
vironment. A HALT feature is included to re-
duce power consumption.
The program and option PROM can be electri-
cally programmed making the HT82K68E suit-
able for use in product development.
1
August 8, 2000