HT56RB688 -- TinyPowerTM A/D type Smart Card OTP MCU with LCD, DAC, ISO 7816 and USB Interfaces

General Description

The TinyPowerTM A/D Type 8-bit high performance RISC architecture microcontroller with LCD/LED driver is specifically designed for applications that interface directly to analog signals and which require an LCD or LED interface. The device includes analog features such as an integrated multi-channel Analog to Digital Converter, 12-bit Digital to Analog Converter, LCD/LED driver, DC/DC Converter and LDO.

With their fully integrated SPI and I2C functions, designers are provided with a means of easy communication with external peripheral hardware. The benefits of integrated analog features such as A/D, LCD, etc., and PWM functions, in addition to low power consumption, high performance, I/O flexibility and low-cost, provides the device with the versatility for a wide range of products in the home appliance and industrial application areas. Some of these products could include electronic metering, environmental monitoring, handheld instruments, electronically controlled tools, motor driving in addition to many others.

The device contains a 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. This device also includes a Smartcard Interface, which is compatible with and certified to ISO 7816 standards, to provide communication with various types of Smart Card.

The unique Holtek TinyPower technology also offers the advantages of extremely low current consumption characteristics, an extremely important consideration in the present trend for low power battery powered applications. The usual Holtek MCU features such as power down and wake-up functions, oscillator options, programmable frequency divider, etc., combine to ensure user applications require a minimum of external components.

Features

  • fSYS=32.768kHz: 2.2V~5.5V
    fSYS=4MHz: 2.2V~5.5V
    fSYS=12MHz: 3.0V~5.5V
    fSYS=20MHz: 4.5V~5.5V
  • Operating current: fSYS=1MHz at 3V, 170µA, typ.
  • OTP Program Memory: 48Kx16
  • RAM Data Memory: 3840x8
  • 12 levels subroutine nesting
  • Up to 48 bidirectional I/O lines
  • TinyPower technology for low power operation
  • Three pin-shared external interrupts lines
  • Three 8-bit programmable Timer/Event Counters with overflow interrupt and 7-stage prescaler
  • One 16-bit programmable Timer/Event Counters with overflow interrupt
  • External Crystal (), RC (ERC) and 32.768kHz (LXT) crystal oscillators
  • Internal high speed RC oscillator - HIRC
  • Fully integrated RC 32kHz oscillator - LIRC
  • Externally supplied system clock option - EC
  • Watchdog Timer function
  • PFD/Buzzer for audio frequency generation
  • Dual Serial Interface Modules (SIM): SPI and I2C
  • LCD and LED driver function: 80x16 or 88x8
  • 4 operating modes: Normal, Slow, Idle and Sleep
  • 8-channel 12-bit resolution A/D converter
  • 4-channel 12-bit PWM outputs
  • 12-bit D/A converter with 8-level volume control
  • USB interface
    - Fully compliant with USB 1.1
      full-speed specification
    - Support 6 endpoints including endpoint 0
    - Support Interrupt, Control and Bulk transfer
    - 160 bytes total FIFO size - 8, 8, 8, 64,
       8 and 64 bytes for endpoint0~endpoint5
       respectively
  • Smartcard interface compatible with and certifiable to the ISO 7816-3 standards
  • DC/DC converter and LDO function
  • Low voltage reset function: 2.1V, 3.15V, 4.2V
  • Low voltage detect function: 2.2V, 3.3V, 4.4V
  • Bit manipulation instruction
  • Table read instructions
  • 63 powerful instructions
  • Up to 0.2µs instruction cycle with 20MHz system clock at VDD=5V
  • All instructions executed in one or two machine cycles
  • Power down and wake-up functions to reduce power consumption
  • Package type: 144-pin LQFP

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