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MAXQ61H Datasheet(PDF) 9 Page - Maxim Integrated Products |
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MAXQ61H Datasheet(HTML) 9 Page - Maxim Integrated Products |
9 / 23 page 16-Bit Microcontroller with Infrared Module _______________________________________________________________________________________ 9 Detailed Description The MAXQ61H microcontroller provides integrated, low-cost solutions that simplify the design of IR commu- nications equipment such as universal remote controls. Standard features include the highly optimized, single- cycle, MAXQ 16-bit RISC core, 36KB of user ROM memory, 1.28KB data RAM, a soft stack, 16 general- purpose registers, and three data pointers. The MAXQ core offers the industry’s best MIPS/mA rating, allowing developers to achieve the same performance as com- peting microcontrollers at substantially lower clock rates. Combining reduced active-mode current with the MAXQ61H stop-mode current (0.2µA, typical) results in increased battery life. Application-specific peripherals include flexible timers for generating IR carrier frequen- cies and modulation, a high-current IR drive pin capa- ble of sinking up to 25mA current, and output pins capable of sinking up to 5mA ideal for IR applications, general-purpose I/O pins ideal for keypad matrix input, and a power-fail-detection circuit to notify the applica- tion when the supply voltage is nearing the minimum operating voltage of the microcontroller. At the heart of the MAXQ61H is the MAXQ 16-bit RISC core. The MAXQ61H operates from DC to 12MHz and almost all instructions execute in a single clock cycle (83.3ns at 12MHz), enabling nearly 12MIPS true code operation. When active device operation is not required, an ultra-low-power stop mode can be invoked from software, resulting in quiescent current consump- tion of less than 0.2µA (typ) and 2.0µA (max). The com- bination of high-performance instructions and ultra-low stop-mode current increases battery life over compet- ing microcontrollers. An integrated POR circuit with brownout support resets the device to a known condi- tion following a power-up cycle or brownout condition. Additionally, a power-fail warning flag is set and a power-fail interrupt can be generated when the system voltage falls below the power-fail warning voltage, VPFW. The power-fail warning feature allows the appli- cation to notify the user that the system supply is low and appropriate action should be taken. Microprocessor The MAXQ61H is based on Maxim’s low-power, 16-bit MAXQ family of RISC cores. The core supports the Harvard memory architecture with separate 16-bit pro- gram and data address buses. A fixed 16-bit instruction word is standard, but data can be arranged in 8 or 16 bits. The MAXQ core in the MAXQ61H family is imple- mented as a pipelined processor with performance approaching 1MIPS/MHz. The 16-bit data path is imple- mented around register modules, and each register module contributes specific functions to the core. The accumulator module consists of sixteen 16-bit registers and is tightly coupled with the arithmetic logic unit (ALU). A configurable soft stack supports program flow. Execution of instructions is triggered by data transfer between functional register modules or between a func- tional register module and memory. Because data movement involves only source and destination mod- ules, circuit-switching activities are limited to active modules only. For power-conscious applications, this approach localizes power dissipation and minimizes switching noise. The modular architecture also provides a maximum of flexibility and reusability that is important for a microprocessor used in embedded applications. The MAXQ instruction set is highly orthogonal. All arith- metical and logical operations can use any register in conjunction with the accumulator. Data movement is supported from any register to any other register. Memory is accessed through specific data-pointer reg- isters with automatic increment/decrement support. Memory The MAXQ61H incorporates several memory types that include the following: • 36KB user ROM • 1.28KB SRAM data memory • 1.024KB utility ROM • Soft stack Block Diagram 16-BIT MAXQ RISC CPU 8kHz NANO RING 1.28KB SRAM IR TIMER 36KB USER ROM SECURE MMU 16-BIT TIMER 16-BIT TIMER GPIO VOLTAGE MONITOR IR DRIVER REGULATOR WATCHDOG CLOCK 1.024KB ROM MAXQ61H |
Similar Part No. - MAXQ61H_12 |
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Similar Description - MAXQ61H_12 |
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