MSP430F5521IPNR Overview
The MSP430F5521IPNR is a low-power, 16-bit microcontroller designed for embedded designs that require efficient processing and integrated USB capability. It combines a compact instruction-efficient core with multiple on-chip peripherals to reduce external components and board area. Designers get a balanced platform for battery-powered and USB-connected equipment, with a clear focus on low energy use and peripheral integration. For sourcing and distribution details visit IC Manufacturer.
MSP430F5521IPNR Technical Specifications
| Architecture | 16-bit RISC MSP430 core |
| Max CPU Frequency | Up to 25 MHz |
| Flash Memory | 128 KB (on-chip, non-volatile) |
| SRAM | 8 KB on-chip |
| Operating Voltage | 1.8 V to 3.6 V |
| USB | USB 2.0 Full-Speed (12 Mbps) |
| ADC | 12-bit analog-to-digital converter |
| Peripherals | USART / SPI / I2C-capable USCI modules |
| DMA | Integrated DMA controller for peripheral transfers |
| Timers | Multiple hardware timers with PWM support |
| Package | TSSOP variant (IPNR package code) |
| Temperature Range | Industrial operating range (?C40 ??C to 85 ??C) |
MSP430F5521IPNR Key Features
- Low-power 16-bit MSP430 core delivers efficient instruction throughput and long battery life.
- Integrated USB 2.0 Full-Speed enables direct USB connectivity for device and host-capable designs without external PHYs.
- On-chip flash and SRAM reduce BOM and PCB area versus external memory architectures.
- 12-bit ADC and multiple serial interfaces simplify sensor interfacing and mixed-signal data acquisition.
- DMA engine lowers CPU load for high-throughput peripheral transfers and deterministic timing.
- Multiple timers and PWM allow precise motor control, power management, and timing tasks.
Typical Applications
- USB-connected battery-powered instruments where full-speed USB and ultra-low-power standby extend field runtime and simplify host connectivity.
- Industrial sensor hubs that require 12-bit conversion, DMA-assisted data movement, and multiple serial buses for sensor aggregation and control.
- Portable medical devices that demand compact BOM, reliable analog front end, and long battery life while supporting USB data and power.
- Embedded consumer peripherals that need MCU-based USB functionality, hardware timers for PWM, and small package footprint for compact assemblies.
MSP430F5521IPNR Advantages vs Typical Alternatives
The device combines a highly efficient 16-bit core with integrated USB and analog peripherals in a single package. This offers fewer external components and lower system cost compared with designs that use separate USB transceivers or external memory chips. It runs at up to 25 MHz, which balances performance and power better than many lower-frequency microcontrollers. On-chip DMA and multiple serial modules improve throughput and determinism relative to simpler, peripheral-limited alternatives.
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MSP430F5521IPNR Brand Info
The MSP430F5521IPNR is part of the MSP430 family from Texas Instruments. Texas Instruments provides ecosystem support including development boards, reference designs, and software tools. The brand emphasizes industrial-grade reliability, long-term availability, and strong technical documentation for embedded engineers and sourcing teams.
FAQ
What core does it use?
The product uses a 16-bit MSP430 RISC core. This core prioritizes low power consumption and efficient code density suitable for battery-powered and embedded control applications.
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Does it support USB?
Yes, the device integrates a USB 2.0 Full-Speed interface. That enables direct USB connectivity at 12 Mbps for device and host-capable designs without requiring an external USB PHY.
What analog capability is available?
It includes a 12-bit ADC for precision measurement tasks. The ADC, combined with on-chip timers and DMA, supports streamlined sampling and low-latency data acquisition.
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Which serial interfaces are included?
On-chip USCI modules provide UART, SPI, and I2C communication. These interfaces support common peripheral and sensor buses for flexible system integration.
What packaging and temperature range?
The part comes in the IPNR TSSOP package and targets industrial temperature conditions. That supports deployment in harsher environments and compact PCB layouts for constrained designs.



