Texas Instruments MSP430F5525IPNR

Overview

MSP430F5525IPNR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller with integrated USB 2.0 PHY, 12-bit ADC (200 ksps, 16-channel autoscan), four 16-bit timers (TA0/TA1/TA2/TB0), two USCI modules (UART/IrDA/SPI/I²C), RTC, hardware multiplier, and 3-channel DMA. It operates from 1.8 V to 3.6 V and delivers 290 µA/MHz active current at 8 MHz (flash execution) - used in battery-powered USB-connected sensor nodes and portable data loggers.

For engineers reviewing the MSP430F5525IPNR datasheet, MSP430F5525IPNR pinout, MSP430F5525IPNR application, or MSP430F5525IPNR equivalent, key selection criteria include USB 2.0 PHY integration, 63 I/O pins in LQFP-80, 128 KB flash/8 KB+2 KB RAM memory map, LPM3 standby current of 1.9 µA (3.0 V), and full RTC + comparator support for time-stamped analog acquisition.

Technical Context

The MSP430F5525IPNR implements a 16-bit RISC CPUXV2 core with constant generators and unified clock system featuring FLL stabilization, dual crystal support (XT1: 32 kHz, XT2: up to 32 MHz), VLO, and REFO. Its power architecture integrates a programmable LDO, SVS/SVM monitoring, and brownout reset - enabling reliable operation across voltage transients in portable instrumentation.

Peripheral co-processing is enabled by three DMA channels servicing USB, ADC, timers, and USCI modules; the 12-bit ADC supports internal reference, sample-and-hold, and autoscan across 14 external + 2 internal channels, while USB functionality includes integrated 3.3-V/1.8-V power system, USB-PLL, and eight endpoints (4 IN/4 OUT).

Key Specifications

Pinout & Package

LQFP-80 package (12 mm × 12 mm, 0.5 mm pitch) with exposed thermal pad; RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power USB MCU applications.

Compared with MSP430F5525IPNR, MSP430F5529IPN offers identical functionality with full flash capacity retained, while MSP430F5527IPN reduces memory resources without altering USB timing, ADC performance, or low-power behavior - enabling scalable product families from a single hardware design.

Availability

MSP430F5525IPNR is available at Aetrix Electronics and suitable for portable instrumentation, USB-connected sensor systems, and battery-powered data loggers requiring stable component supply and long-term industrial lifecycle support.

Supply support for MSP430F5525IPNR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader delivering analog, embedded processing, and connectivity solutions with focus on energy efficiency and system integration.

The MSP430™ ultra-low-power MCU family targets battery-operated measurement, sensing, and USB-interfaced applications - emphasizing extended runtime, precision analog integration, and minimal external component count.

FAQ

What USB speed and device classes does the MSP430F5525IPNR support?

The MSP430F5525IPNR supports full-speed USB 2.0 (12 Mbps) with integrated PHY and complies with USB specification revision 2.0. It natively implements CDC ACM (virtual COM port), HID, and mass storage device classes via TI's USB stack; custom class descriptors can be implemented using the eight configurable endpoints (4 IN/4 OUT) and USB-PLL for precise timing.

Does the MSP430F5525IPNR include a hardware real-time clock (RTC)?

Yes, the MSP430F5525IPNR includes the RTC_A module with calendar mode, alarm interrupts, and battery-backed operation. It supports 32.768-kHz crystal input (XT1) for ±20 ppm accuracy across –40°C to 85°C and retains time/date during LPM3/LPM4 with full RAM retention - enabling timestamped data logging without external RTC ICs.

What is the ADC configuration supported by the MSP430F5525IPNR?

The MSP430F5525IPNR features the ADC12_A module: 12-bit resolution, 200 ksps max sampling rate, 16 input channels (14 external, 2 internal), autoscan mode, sample-and-hold, and selectable internal references (1.5 V or 2.5 V). It supports hardware triggers from timers or GPIO and DMA-accelerated transfers - ideal for synchronized multi-sensor acquisition.

How many I/O pins does the MSP430F5525IPNR provide, and what are their capabilities?

The MSP430F5525IPNR provides 63 general-purpose I/O pins in its LQFP-80 package. Each pin supports configurable pullup/pulldown, Schmitt-trigger inputs, interrupt-on-change, and dual-drive strength (full/reduced). Ports P1–P8 and PJ include peripheral mapping for USCI, timers, ADC, and USB signals - enabling direct interface to sensors, displays, and communication buses without glue logic.

What low-power modes are available on the MSP430F5525IPNR, and what are their typical currents?

The MSP430F5525IPNR supports five low-power modes: LPM0–LPM4 plus LPM4.5. At 3.0 V, typical currents are: LPM3 (RTC active, full RAM retention) = 1.9 µA; LPM4 (full RAM retention, supply supervisor only) = 1.1 µA; LPM4.5 (RAM retention disabled) = 0.18 µA. Wake-up from LPM3 occurs in 3.5 µs - critical for rapid response to sensor interrupts.