TI’s MSP430FG461x ultra-low power MCUs feature up to 120KB flash memory. The MSP430FG461x MCUs are designed for today’s larger system memory requirements and allows for the development of very sophisticated real-time applications, completely in modular C libraries with full backward compatibility. The extended memory model also enables faster code execution that results in up to 50% reduction in cycles for a full context store and up to 25% when addressing peripherals, flash, or RAM.
As the first MSP430X device, the FG461x MCU series includes up to 120KB of flash and up to 8KB RAM memory. Medical customers indicate that the FG461x MCU series meets the requirements of portable medical devices like digital pulse oximeters and wireless electrocardiograms that require highly integrated intelligent peripherals and larger memory options on a single chip.
Up to three operational amplifiers (to handle high precision instrumentation) are coupled with the on-board 200ksps 12-bit analog-to-digital converter (ADC), 1 micro-second code-to-code settling time 12-bit digital-to-analog converter (DAC), and direct memory access controller (DMA) complete a signal chain on chip (SCoC) solution that reduces overall system cost and eliminates the need for external components. The 3-channel DMA eliminates data transfer delays to the on-chip DACs, ADC and other peripherals and frees up the 16-bit RISC MSP430X CPU to spend time processing data, instead of performing “handling” tasks.
Compared to using an external DAC and software, the MSP430FG4xx on-chip DAC module, coupled with the DMA, provides a greater than ten times increase in achievable analog output signal frequency. From a single coin cell, the FG461x MCU can operate for up to ten years by consuming less than two micro-amps in a real time clock stand-by mode allowing the battery to last beyond the intended life of the product, in many cases.
The MSP430FG461x MCU series provides designers with pin-for-pin memory migration from the MSP430F449 MCU. The FG461x series of MCUs are immediately available in volume quantities and start at $9.45 per 1K.