General Description

The MAXQ3108 is a low-power microcontroller that features two high-performance MAXQ20 cores: a dedicated core (DSPCore) for intensive data processing and a user core (UserCore) for supervisory functions. The two cores can operate at different clock speeds, allowing lower system power consumption for even processing intensive applications. The UserCore can be configured to run at the lowest clock rate possible for monitoring the peripherals for communication activities, while the DSPCore runs at the highest speed.

Features

♦ High-Performance, Low-Power, Dual 16-Bit RISC Cores

♦ Approaches 1MIPS per MHz

♦ System Clock

    10.027MHz (DSPCore)

    5.014MHz (UserCore)

♦ 33 Instructions

♦ Approximately 100ns Execution Time at 10.027MHz

♦ Three Independent Data Pointers Accelerate Data Movement with Automatic Increment/Decrement

♦ 16-Bit Instruction Word, 16-Bit Data Bus

♦ 16 x 16-Bit General-Purpose Working Registers for Each Core

♦ 16-Level Hardware Stack for Each Core

♦ Hardware Support for Software Stack

♦ Memory Features

    UserCore

        64KB Flash Program Memory

        16B Battery-Backed (VBAT) Data SRAM

        4KB Utility ROM

        2KB Data SRAM; 10KB Total Data SRAM (If DSPCore Inactive)

    DSPCore

        8KB User-Loadable SRAM Code Memory

        1KB Data SRAM

♦ Peripherals

    FLL (10MHz Output with 32kHz Input)

    SPI Master, I2C Master

    Two UART Channels (One Supports IR Carrier Modulation)

    Math Accelerator for Each Core

    Three Manchester Decoder and Cubic Sinc Filter Channels for Interfacing to DS8102 Delta-Sigma Modulators

    Two 16-Bit Programmable Timer/Counters

    RTC with Alarms and Digital Trim, Dedicated Battery-Backup Pin (VBAT)

    Two Programmable Pulse Generators

    Independent Watchdog Timer for Each Core

    External Interrupts

    JTAG Interface

♦ Operating Modes

    Stop Mode: 0.1µA typ

    Active Current at 10MHz and VDD = 2.0V: 1.0mA typ