HT68FB30/HT68FB40/HT68FB50/HT68FB60 -- Enhanced I/O Flash Type 8-Bit MCU with EEPROM & USB Interface

General Description

The HT68FBx0 series of devices are Flash Memory I/O type 8-bit high performance RISC architecture microcontrollers with a USB interface. Offering users the convenience of Flash Memory multi-programming features, these devices also include a wide range of functions and features. Other memory includes an area of RAM Data Memory as well as an area of EEPROM
memory for storage of non-volatile data such as serial numbers, calibration data etc.

Analog feature includes dual comparator functions. Multiple and extremely flexible Timer Modules provide timing, pulse generation and PWM generation functions. Communication with the outside world is catered for by including fully integrated SPI or I2C interface functions, two popular interfaces which provide designers with a means of easy communication with external peripheral hardware. Protective features such as an internal Watchdog Timer, Low Voltage Reset and Low Voltage
Detector coupled with excellent noise immunity and ESD protection ensure that reliable operation is maintained in hostile electrical environments.

A full choice of HXT, LXT, ERC, HIRC and LIRC oscillator functions are provided including a fully integrated system oscillator which requires no external components for its implementation. The ability to operate and switch dynamically between a range of operating modes using different clock sources gives users the ability to optimise microcontroller operation and minimize power consumption.

The device contains a single USB Full-speed interface to allow data communication with an external USB host controller. It is particularly suitable for applications which require data communication between PCs and peripheral USB hardware.

An extensive choice of oscillator functions is provided including a fully integrated system oscillator which requires no external components for its implementation. The ability to operate and switch dynamically between a range of operating modes using different clock sources gives users the ability to optimise microcontroller operation and minimise power consumption. The devices also include flexible I/O programming features, Time-Base functions and a range of other features.

Features

CPU Features

  • Operating Voltage:
    fSYS=8MHz: 2.2V~5.5V
    fSYS=12MHz: 2.7V~5.5V
    fSYS=20MHz: 4.5V~5.5V
  • Up to 0.2us instruction cycle with 20MHz system clock at VDD=5V
  • Power down and wake-up functions to reduce
    power consumption
  • Five oscillators
    -- External High Speed Xtal
    -- External 32.768kHz Xtal
    -- External RC
    -- Internal High Speed -- no ext. components
    -- Internal 32kHz -- no ext. components
  • Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
  • Fully integrated internal 4MHz, 8MHz and 12MHz oscillator requires no external components
  • All instructions executed in one or two instruction cycles
  • Table read instructions
  • 63 powerful instructions
  • Up to 8 subroutine nesting levels
  • Bit manipulation instruction

MCU Peripheral Features

  • Flash Program Memory: 1Kx14 ~ 12Kx16
  • RAM Data Memory: 64x8 ~ 576x8
  • EEPROM Memory: 32x8 ~ 256x8
  • Watchdog Timer function
  • Up to 39 bidirectional I/O lines
  • Software controlled 4-SCOM lines LCD driver with 1/2 bias
  • Multiple pin-shared external interrupts
  • Multiple Timer Module for time measure, input capture, compare match output, PWM output or single pulse output functions
  • Serial Interface Module -- SIM for SPI or I2C
  • Dual Comparator functions
  • Dual Time-Base functions for generation of fixed time interrupt signal
  • Low voltage reset function
  • Low voltage detect function

SPI to USB chip Features

  • Fully compliant with USB 2.0 Full-Speed
    specification
  • 6 endpoints (including endpoint 0)
  • FIFO: 8, 8, 8, 64, 8, 64 for endpoint 0 ~ endpoint 5 respectively
  • Suspend Mode and Remote Wake-up function
  • Multiple USB interrupt generation sources: endpoint access, suspend, resume and reset signals
  • CMOS clock input with frequency of 6MHz/12MHz for the USB PLL clock

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