The MAXQ615 is a low-power, 16-bit MAXQ® microcontroller designed for low-power applications. The device combines a powerful 16-bit RISC microcontroller and integrated peripherals including multiple high-speed serial communication interfaces and flexible port I/O. High-speed communication interfaces include dual SPI and I²C. The device also provides three instances of the 16-bit timer B peripheral. A 16 x 16 hardware multiply/accumulate with 48-bit accumulator provides support for computationally intensive applications. The device provides 48KB of flash memory and 2KB of data SRAM. For the ultimate in low-power performance, the device includes an ultra-low-power stop mode (0.2µA typ). 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 single 2.4V to 3.6V power-supply operating voltage. Applications * Battery-Powered Portable Equipment * Consumer Electronics * Home Appliances * Portable Computing * White Goods * Core Functionality * High-Performance, Low-Power 16-Bit MAXQ20S RISC Core * DC to 20MHz Operation Across Entire Operating Range * 2.4V to 3.6V Operating Voltage * Three Independent Data Pointers Accelerate Data Movement with Automatic Inc/Dec * Dedicated Pointer for Direct Read from Code Space * 16-Bit Instruction Word, 16-Bit Data Bus * 16 x 16-Bit General-Purpose Working Registers * Optimized for C Compiler * Memory * 48KB Flash Memory * 1KB Page Sectors * 20,000 Erase/Write Cycles per Sector * 2KB Data SRAM * Masked ROM Available * I/O and Peripherals * Power-Fail Warning * Power-On Reset/Brownout Reset * Three 16-Bit Programmable Timers/Counters with Prescaler * Programmable Watchdog Timer * Internal 20MHz Clock ±5% * Dual SPI Ports with 16-Byte FIFO * I²C Communication Port * Up to 12 General-Purpose I/O Pins * Low Power Consumption * 0.2µA (typ) in Stop Mode * 2.6mA (typ) at 20MHz * Divided System Clock Modes Available