Texas Instruments MSP430F5310IRGZR

Overview

MSP430F5310IRGZR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 32 KB Flash, 6 KB RAM, dual USCI modules (UART/IrDA/SPI/I²C), 10-bit ADC with 12 channels (10 external + 2 internal), RTC, and four 16-bit timers - used in battery-powered sensor systems and digital timers requiring sub-2 µA standby current.

For engineers reviewing the MSP430F5310IRGZR datasheet, MSP430F5310IRGZR pinout, MSP430F5310IRGZR application, or MSP430F5310IRGZR equivalent, key selection criteria include LPM3 current (1.9 µA @ 2.2 V), 48-pin VQFN package with 31 GPIOs, integrated LDO, and dual-USCI flexibility for serial sensor interfacing and real-time control.

Technical Context

The MSP430F5310IRGZR implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO), enabling wake-up from LPM3 to active mode in under 5 µs. Its Unified Clock System supports multiple clock sources: 32-kHz XT1 crystal, up to 32-MHz XT2 crystal, internal VLO (10 kHz), and trimmed REFO (32.768 kHz).

Peripherals include three Timer_A instances (5/3/3 capture/compare registers), one Timer_B (7 registers), hardware multiplier, 3-channel DMA, and comparator_B. The device uses port mapping control on P4 to configure USCI signal routing - critical for pin-constrained 48-pin designs.

Key Specifications

Pinout & Package

VQFN-48 (RGZ) package, 7 mm × 7 mm, exposed thermal pad (to be connected to VSS), 48-pin surface-mount IC with 31 general-purpose I/O pins across Ports P1–P6 and PU.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5309IRGZR and MSP430F5308IRGZR, the MSP430F5310IRGZR provides 32 KB Flash headroom for future firmware updates, secure bootloader space, and complex sensor fusion algorithms - making it optimal for long-lifecycle industrial deployments requiring field-upgradable intelligence.

Availability

MSP430F5310IRGZR is available at Aetrix Electronics and suitable for wireless sensor nodes, digital thermostats, and hand-held meters requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MSP430F5310IRGZR 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 emphasis on energy efficiency, reliability, and system integration.

The MSP430F5310IRGZR belongs to TI's MSP430F5xx ultra-low-power MCU family, designed specifically for portable measurement, battery-operated sensing, and real-time control applications demanding sub-µA sleep currents and fast wake-up response.

FAQ

What is the maximum operating frequency of the MSP430F5310IRGZR?

The MSP430F5310IRGZR supports a maximum system clock frequency of 25 MHz, achieved via its digitally controlled oscillator (DCO) stabilized by the FLL loop. This frequency is confirmed in the device's electrical specifications (Section 5.18, DCO Frequency) and applies across the full 1.8–3.6 V supply range. The MSP430F5310IRGZR maintains timing integrity at this rate while executing from Flash or RAM.

Does the MSP430F5310IRGZR support crystal oscillators for both low- and high-frequency operation?

Yes, the MSP430F5310IRGZR supports two crystal oscillator circuits: XT1 accepts a 32.768-kHz watch crystal for RTC and low-power timing, while XT2 supports crystals up to 32 MHz for high-speed system clocking. Both are validated in Sections 5.14 (XT1) and 5.15 (XT2) of the datasheet, with specified load capacitance and startup times.

How many I/O pins does the MSP430F5310IRGZR provide in its RGZ package?

The MSP430F5310IRGZR in the 48-pin VQFN (RGZ) package provides 31 general-purpose I/O pins distributed across Ports P1–P6 and PU. This count is explicitly stated in Table 3-1 (Device Comparison) and verified in the pin diagrams (Figure 4-3) and signal descriptions (Table 4-1) for the RGZ/PT variants.

Can the MSP430F5310IRGZR operate from a single 1.8-V supply?

Yes, the MSP430F5310IRGZR operates across a supply voltage range of 1.8 V to 3.6 V, with all specifications guaranteed down to 1.8 V. Section 5.3 (Recommended Operating Conditions) confirms functional operation including Flash programming, ADC conversion, and USCI communication at 1.8 V, though LPM3 current increases slightly versus 3 V operation.

Is the MSP430F5310IRGZR pin-compatible with other devices in the MSP430F53xx family?

The MSP430F5310IRGZR shares identical pinouts with MSP430F5309IRGZR and MSP430F5308IRGZR in the 48-pin RGZ and PT packages, as confirmed in Figures 4-3 and Table 3-1. All three devices have identical terminal numbering, signal assignments, and package dimensions - enabling hardware reuse across firmware variants.