Texas Instruments MSP430F5500IRGZT

Overview

MSP430F5500IRGZT from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with integrated USB 2.0 PHY, comparator (no ADC), 8 KB flash, 4 KB + 2 KB RAM, and 31 I/O pins in a 48-pin VQFN package. It operates from 1.8 V to 3.6 V, achieves 195 µA/MHz active current at 8 MHz/3 V, and supports RTC, multiple timers (TA0/TA1/TA2/TB0), two USCIs, and full-speed USB connectivity for embedded sensor interfaces and portable data loggers.

For engineers reviewing the MSP430F5500IRGZT datasheet, MSP430F5500IRGZT pinout, MSP430F5500IRGZT application, or MSP430F5500IRGZT equivalent, key selection criteria include its comparator-only analog front-end (vs. ADC-equipped variants), USB-PHY integration, 48-pin RGZ package constraints on USCI signal routing via port mapping controller, and LPM4.5 shutdown current of 0.18 µA at 3 V.

Technical Context

The MSP430F5500IRGZT implements a unified clock system with FLL stabilization, dual crystal support (XT1 for 32-kHz RTC, XT2 up to 32 MHz), and internal sources (VLO, REFO). Its power management includes an integrated LDO with programmable core voltage, supply supervision, and brownout detection - enabling robust operation across battery-powered environments.

Peripherals are accessed via memory-mapped registers and controlled by the CPUXV2 core with constant generators. The port mapping controller on P4 allows dynamic assignment of USCI_A1 and USCI_B1 functions (UART/IrDA/SPI/I²C) to physical pins, though simultaneous full functionality is limited by pin count and routing constraints in the 48-pin RGZ package.

Key Specifications

Pinout & Package

Package: 48-pin VQFN (RGZ), 7 mm × 7 mm, exposed thermal pad (recommended connection to DVSS).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with MSP430F5504IRGZT, the MSP430F5500IRGZT removes ADC circuitry to reduce power and cost for pure threshold-detection tasks; compared with MSP430F5529IPN, it trades flash size and I/O count for smaller footprint and lower active current - making it optimal for space-constrained, ultra-low-power USB sensor endpoints.

Availability

MSP430F5500IRGZT is available at Aetrix Electronics and suitable for USB sensor dongles, portable data loggers, industrial control interfaces, and wireless headset companions requiring stable component supply and long-term lifecycle support.

Supply support for MSP430F5500IRGZT 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 company delivering analog and embedded processing solutions for industrial, automotive, personal electronics, and communications markets.

The MSP430F5500IRGZT belongs to TI's ultra-low-power MCU product line, designed specifically for battery-operated sensor nodes and USB-connected portable instrumentation where sub-µA shutdown current and integrated USB-PHY are critical design requirements.

FAQ

What is the maximum system clock frequency supported by the MSP430F5500IRGZT?

The MSP430F5500IRGZT supports a maximum system clock frequency of 25 MHz, achieved via the FLL-controlled DCO or high-frequency crystal oscillator (XT2) up to 32 MHz. This enables high-speed USB packet processing and real-time peripheral response while maintaining ultra-low power consumption in active mode.

Does the MSP430F5500IRGZT include an analog-to-digital converter (ADC)?

No, the MSP430F5500IRGZT does not include an ADC. It features a comparator module (Comparator_B) instead, as confirmed in the device description: "MSP430F5503, MSP430F5502, MSP430F5501, and MSP430F5500 devices include all of the MSP430F5507–F5504 peripherals, except that they have a comparator instead of the 10-bit ADC."

What USB speed and compliance level does the MSP430F5500IRGZT support?

The MSP430F5500IRGZT supports full-speed USB 2.0 (12 Mbps) with an integrated USB-PHY, USB-PLL, and dedicated 3.3-V/1.8-V power system. It complies with USB 2.0 specification for device enumeration, suspend/resume, and data transfer - requiring no external transceiver or clock source.

How many I/O pins does the MSP430F5500IRGZT provide, and what is their configuration flexibility?

The MSP430F5500IRGZT provides 31 programmable I/O pins across ports P1–P6 and PJ. Each pin supports multiple functions via the port mapping controller (especially on P4), Schmitt-trigger inputs, programmable drive strength, and individual interrupt/wakeup capability - enabling flexible peripheral routing within the 48-pin RGZ constraint.

What is the lowest power consumption state of the MSP430F5500IRGZT, and what features remain active?

The lowest power state is LPM4.5 (shutdown mode), drawing only 0.18 µA at 3 V. In this mode, full RAM retention is maintained, the supply supervisor remains operational, and fast wakeup is preserved - but all clocks, peripherals, and core logic are disabled until reset or external interrupt.