HT82K68E-L_09 Datasheet, PDF (1/38 Pages) Holtek Semiconductor Inc – Multimedia Keyboard Encoder 8-Bit MCU

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HT82K68E-L/HT82K68A-L
Multimedia Keyboard Encoder 8-Bit MCU
Features
· Operating voltage: 1.8V~5.5V
· 34 bidirectional I/O line and 3 CMOS output
· One 8-bit programmable timer counter with overflow
interrupts
· Crystal or RC oscillator
· Watchdog Timer
· 3K´16 program EPROM
· 160´8 data RAM
· One external interrupt pin (shared with PC2)
· 2.0V LVR by option (default disable)
· 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
· 20/28-pin SOP, 32-pin QFN and
48-pin SSOP packages
General Description
This device is an 8-bit high performance peripheral in-
terface IC, designed for multiple I/O products and multi-
media applications. It supports interface to a low speed
PC with multimedia keyboard or wireless keyboard in
Windows 95, Windows 98 or Windows 2000 environ-
ment. A HALT feature is included to reduce power con-
sumption.
The mask version HT82K68A-L is fully pin and functionally
compatible with the OTP version HT82K68E-L device.
Rev. 1.30
1
August 5, 2009