General Description

This device is an 8-bit high performance RISC-like microcontroller designed for USB product applications. It is particularly suitable for use in products such as mice, keyboards and joystick. A HALT feature is included to reduce power consumption.

Features

• Operating voltage: fSYS=6M/12MHz: 4.4V~5.5V

• Low voltage reset function

• 32 bidirectional I/O lines (max.)

• 8-bit programmable timer/event counter with overflow interrupt

• 16-bit programmable timer/event counter and overflow interrupts

• Crystal oscillator (6MHz or 12MHz)

• Watchdog Timer

• 6 channels 8-bit A/D converter

• PS2 and USB modes supported

• USB1.1 low speed function

• 4 endpoints supported (endpoint 0 included)

• 409615 program memory ROM

• 1608 data memory RAM

• HALT function and wake-up feature reduce power consumption

• 8-level subroutine nesting

• Up to 0.33μs instruction cycle with 12MHz system clock at VDD=5V

• Bit manipulation instruction

• 15-bit table read instruction

• 63 powerful instructions

• All instructions in one or two machine cycles

• 28-pin SOP, 48-pin SSOP package