The device is a Flash Memory A/D with USB type 8-bit high performance RISC architecture microcontroller, designed for Data Logger applications that interface directly to analog signals and require an USB interface. Offering users the convenience of Flash Memory multi-programming features, the device also includes 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 for storage of non-volatile data such as serial numbers, calibration data etc.

Analog features include a multi-channel 12-bit A/D converter and two comparators. 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, I2C, UART and USB interface functions, four 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. The external interrupt can be triggered with rising or falling edges or both falling and rising edges.

A full choice of external, internal high and low oscillators is provided including two fully integrated system oscillators which require no external components for their implementation. The ability to operate and switch dynamically between a range of operating modes using different clock sources gives users the ability to optimize microcontroller operation and minimize power consumption.

The inclusion of flexible I/O programming features along with many other features ensure that the device will find specific excellent use in a wide range of application possibilities such as sensor signal processing, motor driving, industrial control, consumer products, subsystem controllers, etc.

The device is fully supported by the Holtek range of fully functional development and programming tools, providing a means for fast and efficient product development cycles.

CPU Features

• Operating voltage:
  •  VDD (MCU):
    • fSYS =6MHz: 2.2V~5.5V
    • fSYS =12MHz: 2.7V~5.5V
    • fSYS =16MHz: 3.3V~5.5V
  •  VDD (USB mode):
    • fSYS =6MHz/12MHz/16MHz: 3.6V~5.5V
• Up to 0.25us instruction cycle with 16MHz system clock at VDD =5V
• Power down and wake-up functions to reduce power consumption
• Oscillator types
  • External High Speed Crystal -- HXT
  • External Low Speed 32.768kHz Crystal -- LXT
  • Internal High Speed RC -- HIRC
  • Internal Low Speed 32kHz RC -- LIRC
• Multi-mode operation: NORMAL, SLOW, IDLE and SLEEP
• Fully integrated internal 12MHz oscillator requires no external components
• All instructions executed in 1~3 instruction cycles
• Table read instructions
• 115 powerful instructions
• 12-level subroutine nesting
• Bit manipulation instruction

Peripheral Features

• Flash Program Memory: 48K×16
• RAM Data Memory: 1024×8
• True EEPROM Memory: 16K×8
• Watchdog Timer function
• 41 bidirectional I/O lines
• Dual pin-shared external interrupts
• Multiple Timer Modules for time measurement, input capture, compare match output or PWM output or single pulse output function
• 1 Standard type 16-bit Timer Module – STM
• 5 Periodic type 10-bit Timer Modules – PTM0~PTM4
• USB interface
  • USB 2.0 Full Speed compatible
  • 8 endpoints supported including endpoint 0
  • All endpoints except endpoint 0 can support interrupt and bulk transfer
  • All endpoints except endpoint 0 can be configured as 8, 16, 32, 64 bytes FIFO size
  • Endpoint 0 support control transfer
  • Endpoint 0 has 8 byte FIFO
  • Support 3.3V LDO and internal UDP 1.5kΩ pull-up resistor
  • Internal 12MHz RC oscillator with 0.25% accuracy for all USB modes
• Serial Interface Module -- SIM for SPI or I2C
• Single Serial SPI Interface – SPIA
• Fully-duplex Universal Asynchronous Receiver and Transmitter Interface – UART
• Dual comparator functions
• Dual Time-Base functions for generation of fixed time interrupt signals
• 16 external channels 12-bit resolution A/D converter
• 16-bit Multiplication Division Unit
• Low voltage reset function
• Low voltage detect function
• In Application Programming function – IAP
• In System Programing function – ISP
• Package types: 46-pin QFN, 48-pin LQFP

Specification:

• max. frequency: 16MHz
• VDD: 2.2V~5.5V
• program memory: 48Kx16
• data memory: 1024x8
• data EEPROM: 16Kx8
• stack: 12
• I/O: 41
• timer: 10-bit PTM×5, 16-bit STM×1
• ADC: 12-bitx16
• comparator: 2
• interface: UART×1, SPI/I²C×1, SPI×1
• case: 46QFN