Texas Instruments MSP430F5508IRGZR

Overview

MSP430F5508IRGZR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller with integrated full-speed USB 2.0 PHY, 16 KB flash, 4 KB + 2 KB RAM, 10-bit ADC (8 channels: 6 external, 2 internal), two USCI modules (UART/IrDA/SPI/I²C), four 16-bit timers, RTC, hardware multiplier, and DMA - designed for battery-powered sensor systems and USB-connected data loggers.

For engineers reviewing the MSP430F5508IRGZR datasheet, MSP430F5508IRGZR pinout, MSP430F5508IRGZR application, or MSP430F5508IRGZR equivalent, key selection criteria include USB PHY integration, 48-pin VQFN package compatibility, LPM4.5 shutdown current (0.18 µA), 16 KB flash capacity, and dual-USCI support for simultaneous UART + I²C or SPI interfaces in portable measurement systems.

Technical Context

The MSP430F5508IRGZR implements a digitally controlled oscillator (DCO) with FLL stabilization, supports multiple clock sources (VLO, REFO, XT1, XT2 up to 32 MHz), and features a unified clock system enabling dynamic low-power mode transitions. Its power management includes an integrated LDO with programmable core voltage, SVM/SVS monitoring, and brownout detection.

USB functionality is implemented via dedicated hardware: integrated USB-PHY, USB-PLL, dual 3.3-V/1.8-V USB power system, and eight configurable endpoints. The port mapping controller on P4 enables flexible USCI signal routing, though simultaneous use of all USCI functions is constrained by pin multiplexing in the 48-pin RGZ package.

Key Specifications

Pinout & Package

VQFN-48 (RGZ) package, 7 mm × 7 mm, 0.5-mm pitch, 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 MSP430F5508IRGZR, the MSP430F5510IRGZR offers 2× flash and 16 additional GPIOs for complex USB peripherals, while the MSP430F5509IRGZR provides 50% more flash with identical I/O and USB performance - both retain the same ultra-low-power profile and RGZ package compatibility.

Availability

MSP430F5508IRGZR is available at Aetrix Electronics and suitable for USB-connected sensor nodes, battery-powered data loggers, and industrial interface adapters requiring stable component supply and long-term production support.

Supply support for MSP430F5508IRGZR 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 and embedded processing solutions for industrial, automotive, and personal electronics markets.

The MSP430F5508IRGZR belongs to the MSP430F5xx ultra-low-power MCU family, engineered for precision sensing and USB connectivity in portable measurement systems where battery life and integration density are critical.

FAQ

What USB speed and compliance does the MSP430F5508IRGZR support?

The MSP430F5508IRGZR supports full-speed USB 2.0 (12 Mbps) with integrated PHY, USB-PLL, and dual-voltage power system (3.3 V and 1.8 V). It complies with USB 2.0 specification for device enumeration, descriptor handling, and endpoint management. The MSP430F5508IRGZR requires no external USB transceiver and implements standard USB suspend/resume and remote wakeup behavior per its USB module documentation.

Does the MSP430F5508IRGZR include an internal DC-DC converter or only an LDO?

The MSP430F5508IRGZR integrates a fully programmable low-dropout regulator (LDO) for core voltage regulation, supporting multiple VCORE levels to optimize power versus performance. It does not include a switched-mode DC-DC converter. The LDO is fed from DVCC and supplies the digital core, enabling stable operation across 1.8–3.6 V supply range while maintaining ultra-low quiescent current in all low-power modes.

How many analog input channels does the 10-bit ADC in the MSP430F5508IRGZR support?

The MSP430F5508IRGZR features a 10-bit ADC (ADC10_A) with 8 total input channels: 6 external analog inputs (A0–A5 on P6.x and P5.x) and 2 internal references (VeREF+ and VeREF−). It achieves 200 ksps sampling rate and includes a window comparator for autonomous threshold detection - all without CPU intervention when used with DMA.

Can the MSP430F5508IRGZR operate from a single 3.3-V supply, and what are the voltage domain requirements?

Yes, the MSP430F5508IRGZR operates from a single 3.3-V supply applied to DVCC and AVCC. DVCC powers digital logic and USB PHY; AVCC supplies analog circuitry including ADC and comparators; VCORE is internally regulated by the LDO. All supply pins (DVCC1/DVCC2, AVCC1, VUSB, V18) must be properly decoupled per TI's layout guidelines. The MSP430F5508IRGZR does not require separate 1.8-V or 5-V rails beyond the specified USB-related voltages generated internally.

Is the MSP430F5508IRGZR pin-compatible with other devices in the MSP430F55xx family in the RGZ package?

Yes, the MSP430F5508IRGZR is pin-compatible with MSP430F5509IRGZR and MSP430F5510IRGZR in the 48-pin VQFN (RGZ) package - sharing identical pin count, mechanical footprint, and signal assignment for all primary functions (GPIO, USB, JTAG/SBW, XT1, XT2, power). Peripheral differences (e.g., flash size, I/O count) do not affect pinout; software and hardware designs can scale across these variants without PCB revision.