Mulle hardware

From Mulle development

The Mulle v3/v4 hardware

This information has moved to the Block diagram page.

Components

• The IC1 component is the MCU, a Renesas M16C/62P 16-bit microcontroller with 31 kB of RAM and 384 kB of flash memory. The M16C/62P MCU features:
  • 2 DMA channels
  • 8/10 bits analog-to-digital converter (ADC)
  • 8-bit digital-to-analog converter (DAC)
  • Eleven 16-bit hardware timers
  • Hardware 16-bit CRC accelerator
  • Watchdog timer
  • 4 different clocks, all with different functionality and power consumption
    • Main clock (10 MHz)
    • Sub-clock (32.768 kHz)
    • On-chip oscillator (Approx. 1 MHz)
    • PLL synthesizer (10-20 MHz)
• U5 is the communication module, a Mitsumi WML-C46 Bluetooth 2.0 module with integrated antenna.
• U4 is the real-time clock, which provides date and time. It also features clock outputs that are used for low-power operation.
• U3 is the battery monitor. It can measure battery voltage, temperature, and stored energy. It can also measure the current consumption in real-time.
• U9 is an Atmel DataFlash on 2 MB. It can store sensor data and configuration data.
• U6 is an analog temperature sensor from Maxim/Dallas.
• U7 is the voltage reference for the analog system. An external Vref can also be used by removing a zero-ohm resistor on the Mulle and connecting another voltage reference to the Vref pin on the expansion port, H1.
• U1 is a low-power voltage regulator, which powers the RTC and MCU. It cannot be disabled.
• U2 is low-power voltage reference capable of delivering high currents. It is used for powering the Bluetooth module, and the analog system and possible external sensors.
• The Mulle v3 also features one green LED, one RED led, and solder pads for an external LED.
• H1 is a high-density expansion port. It features:
  • Analog inputs
  • Analog outputs
  • Digital inputs & outputs
  • Interrupts
  • Vref
  • AVcc
  • Unregulated power
  • Regulated 3.3 V
  • I2C bus
  • Reset
  • UART