Part Number	Replacement	Explanation

Description

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The MAXQ612/MAXQ622 are low-power, 16-bit MAXQ® microcontrollers designed for low-power applications including universal remote controls, consumer electronics, and white goods. Both devices use a low-power, high-throughput, 16-bit RISC microcontroller. Serial peripherals include two universal synchronous/asynchronous receiver-transmitters (USARTs), two SPI™ master/slave communications ports, and an inter-integrated circuit (I²C) bus. The devices also incorporate an IR module with carrier frequency generation and flexible port I/O capable of multiplexed keypad control. The MAXQ622 adds a universal serial bus (USB) with integrated physical interface (PHY).

The MAXQ612/MAXQ622 include 128KB of flash memory and 6KB of data SRAM. Intellectual property (IP) protection is provided by a secure memory management unit (MMU) that supports multiple application privilege levels and protects code against copying and reverse engineering. Privilege levels enable vendors to provide libraries and applications to execute on the MAXQ612/MAXQ622, while limiting access to only data and code allowed by their privilege level.

For the ultimate in low-power battery-operated performance, the devices include an ultra-low-power stop mode (0.3µA typical). In this mode, the minimum amount of circuitry is powered. Wake-up sources include external interrupts, the power-fail interrupt, and a timer interrupt. The microcontroller runs from a wide operating voltage of 1.70V to 3.6V, and can also be powered from the USB.

Designers must have the following documents to fully use all the features of this device. The data sheet contains pin descriptions, feature overviews, and electrical specifications. Errata sheets contain deviations from published specifications. The user's guides offer detailed information about device features and operation.

• MAXQ612/MAXQ622 IC data sheet
• MAXQ612/MAXQ622 revision-specific errata sheet (Click here for availability)
• MAXQ612/MAXQ622 User's Guide

MAXQ612, MAXQ622: Block Diagram Enlarge+

Key Features

• High-Performance, Low-Power, 16-Bit RISC Core
• DC to 12MHz Operation Across Entire Operating Range
• 1.70V to 3.6V Operating Voltage
• Can Be Powered from Battery (V_DD) or USB (V_DDB)
• 33 Total Instructions for Simplified Programming
• Three Independent Data Pointers Accelerate Data Movement with Automatic Increment/Decrement
• Dedicated Pointer for Direct Read from Code Space
• 16-Bit Instruction Word, 16-Bit Data Bus
• 16 x 16-Bit General-Purpose Working Registers
• Secure MMU for Application Partitioning and IP Protection
• Memory Features
  • 128KB Flash Memory
    • 512-Byte Sectors
    • 20,000 Erase/Write Cycles per Sector
  • 6KB Data SRAM
• USB Features (MAXQ622 Only)
  • USB 2.0 Full-Speed Compatible
  • Hardware Receive and Transmit Buffers for High Throughput
  • Integrated Full-Speed Transceiver
  • On-Chip Termination and Pullup Resistors
• Additional Peripherals
  • Power-Fail Warning
  • Power-On Reset (POR)/Brownout Reset
  • Automatic IR Carrier Frequency Generation and Modulation
  • Two 16-Bit Programmable Timers/Counters with Prescaler and Capture/Compare
  • Two SPI Communication Ports
  • Two USART Communication Ports
  • I²C Port
  • Programmable Watchdog Timer
  • 8kHz Nanopower Ring Oscillator Wake-Up Timer
  • Up to 56 General-Purpose I/O
• Low Power Consumption
  • 0.3µA (typ), 3µA (max) in Stop Mode
    • T_A = +25°C, Power-Fail Monitor Disabled
  • 4.8mA (typ) at 12MHz, 520µA (typ) at 1MHz in Active Mode

Applications/Uses

• Battery-Powered Portable Equipment
• Consumer Electronics
• Home Appliances
• Remote Controls
• White Goods