The HT67F488/HT67F489 series of devices are Flash Memory A/D type 8-bit high performance RISC architecture microcontrollers, designed especially for applications that interface directly to analog signals, such as those from sensors. Offering users the convenience of Flash Memory multiprogramming 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 true EEPROM memory (only for HT67F489) for storage of non-volatile data such as serial numbers, calibration data etc.

Analog features include a multi-channel 12-bit A/D converter function. Multiple and extremely flexible Timer Modules provide timing, pulse generation and PWM generation functions. 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 HIRC, HXT, LXT 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 UART module is contained in these devices. It can support the applications such as data communication networks between microcontrollers, low-cost data links between PCs and peripheral devices, portable and battery operated device communication, etc.

The inclusion of both LCD and LED driver functions allows for easy and cost effective solutions in applications that require interface to these display types.

The inclusion of flexible I/O programming features, Time-Base functions along with many other features enhance the versatility of these devices to suit a wide range of A/D application possibilities such as sensor signal processing, chargers, motor driving, industrial control, consumer products, subsystem controllers, etc.

CPU Features

• Operating Voltage
  • fSYS = 4MHz: 2.2V~5.5V
  • fSYS = 8MHz: 2.2V~5.5V
  • fSYS = 12MHz: 2.7V~5.5V
  • fSYS = 16MHz: 4.5V~5.5V
• Power down and wake-up functions to reduce power consumption
• Oscillators
  • Internal RC – HIRC
  • External Crystal - HXT
  • Internal 32kHz RC – LIRC
  • External 32.768kHz Crystal – LXT
• Fully integrated internal 8MHz oscillator requires no external components
• Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
• All instructions executed in 1~3 instruction cycles
• Bit manipulation instruction
• 16-bit Table Read Function
• 115 powerful instructions
• Support dual words instructions for RAM access
• 8-level subroutine nesting

Peripheral Features

• Flash Program Memory: 4K×16 ~ 8K×16
• RAM Data Memory: 256×8
• True EEPROM Memory: 64×8 (only for HT67F489)
• Watchdog Timer function
• 42 bidirectional I/O lines
  • Inlcude LCD/LED driving output
• 4 pin-shared external interrupts
• Multiple Timer Modules for time measure, input capture, compare match output, PWM output or
• single pulse output functions
• Dual Time-Base functions for generation of fixed time interrupt signals
• 10-channel 12-bit resolution A/D converter
• LCD display
  • 20SEG × 4COM & 20SEG × 8COM
  • 1/3 or 1/4 bias
• LED display: 8SEG × 8COM
• Fully-duplex Universal Asynchronous Receiver and Transmitter Interface -- UART
• Low Voltage Reset function
• Low Voltage Detect function
• Package type: 44-pin LQFP

Specification:

• max. frequency: 16MHz
• VDD: 2.2V~5.5V
• program memory: 8Kx16
• data memory: 256x8
• data EEPROM: 64x8
• stack: 8
• I/O: 42
• timer: 10-bit CTM×3, 10-bit PTM×1
• ADC: 12-bitx10
• LCD: 20x8, 20x4
• comparator: -
• interface: UARTx1
• case: 44LQFP