HT82K95E Datasheet, PDF (1/48 Pages) Holtek Semiconductor Inc – USB Multimedia Keyboard Encoder 8-Bit MCU

HT82K95E/HT82K95A
USB Multimedia Keyboard Encoder 8-Bit MCU
Technical Document
· Tools Information
· FAQs
· Application Note
Features
· Operating voltage:
f_SYS=6M/12MHz: 4.2V~5.5V
· Low voltage reset function
· 32 bidirectional I/O lines (max.)
· 8-bit programmable timer/event counter with over-
flow interrupt
· 16-bit programmable timer/event counter and over-
flow interrupts
· Crystal oscillator (6MHz or 12MHz)
· Watchdog Timer
· PS2 and USB modes supported
· USB1.1 low speed function
· 3 endpoints supported (endpoint 0 included)
· 4096´15 program memory ROM
· 160´8 data memory RAM
· All I/O ports support wake-up options
· HALT function and wake-up feature reduce power
consumption
· 8-level subroutine nesting
· Up to 0.33ms instruction cycle with 12MHz system
clock at V_DD=5V
· Bit manipulation instruction
· 15-bit table read instruction
· 63 powerful instructions
· All instructions in one or two machine cycles
· 20/28-pin SOP, 20/48-pin SSOP package
General Description
This device is an 8-bit high performance RISC architec-
ture microcontroller designed for USB product applica-
tions. It is particularly suitable for use in products such
as keyboards. A HALT feature is included to reduce
power consumption. The mask version HT82K95A is
fully pin and functionally compatible with the OTP ver-
sion HT82K95E device.
Rev. 1.20
1
October 24, 2005