Texas Instruments MSP430F5258IRGCT

Overview

MSP430F5258IRGCT from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller designed as an "always-on" system controller with dual-supply operation (DVCC = 1.8–3.6 V, DVIO = 1.62–1.98 V), 128 KB flash, 32 KB RAM, four USCI_A and four USCI_B modules, and real-time clock capability - deployed in sensor hubs and power-management subsystems for portable electronics.

For engineers reviewing the MSP430F5258IRGCT datasheet, MSP430F5258IRGCT pinout, MSP430F5258IRGCT application, or MSP430F5258IRGCT equivalent, key selection criteria include split-rail I/O voltage support, LPM3 standby current (2.3 µA at 3.0 V), 3.5-µs wake-up time, 35 general-purpose I/Os (18 on DVCC, 35 on DVIO), and hardware RTC with alarm.

Technical Context

The MSP430F5258IRGCT implements a unified clock system with FLL stabilization, dual crystal support (XT1 for 32-kHz, XT2 up to 32 MHz), and internal oscillators (VLO, REFO). Its power architecture integrates a programmable LDO core regulator, supply supervision (SVS/SVM), and brownout reset - enabling robust operation across variable battery conditions.

Peripherals include three Timer_A instances (TA0: 5 CC, TA1: 3 CC, TA2: 3 CC), one Timer_B (TB0: 7 CC), 10-bit ADC10_A with 12 channels (10 external, 2 internal), comparator_B (8 channels), 3-channel DMA, and hardware multiplier supporting 32-bit operations - all accessible via memory-mapped registers under CPUXV2 core control.

Key Specifications

Pinout & Package

VQFN-64 (RGC) package, 9 mm × 9 mm, thermally enhanced with exposed thermal pad; pin-compatible within MSP430F525x RGC variants.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5259IRGCT, the MSP430F5258IRGCT removes ADC resources to reduce die size and cost while retaining full 32 KB RAM, eight USCI modules, and RTC - making it optimal for digital sensor fusion. Against MSP430F5254IRGCT, the MSP430F5258IRGCT doubles RAM and adds I²C BSL support, enhancing field-upgrade flexibility in production.

Availability

MSP430F5258IRGCT is available at Aetrix Electronics and suitable for wearable sensor hubs, portable power-management units, and Bluetooth peripheral controllers requiring stable component supply, long-term lifecycle assurance, and TI-qualified industrial-grade traceability.

Supply support for MSP430F5258IRGCT 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 MSP430F5258IRGCT belongs to the MSP430F525x ultra-low-power MCU family, engineered specifically for "always-on" system controller roles in battery-powered devices - prioritizing split-rail I/O, RTC autonomy, and minimal active/standby power.

FAQ

What is the primary supply voltage range for MSP430F5258IRGCT?

The MSP430F5258IRGCT operates with a primary supply (DVCC/AVCC) from 1.8 V to 3.6 V. This rail powers the core logic, analog peripherals (ADC, comparator), and DVCC-domain I/O ports (P5–P6, PJ). The separate DVIO rail (1.62–1.98 V) supplies all DVIO-domain pins (P1–P4, P7), enabling direct 1.8-V interface compatibility.

Does MSP430F5258IRGCT include an analog-to-digital converter?

No, the MSP430F5258IRGCT does not include an ADC. It is functionally identical to the MSP430F5259IRGCT except that the ADC10_A module (10-bit, 12-channel) is omitted - confirmed in Table 6-1 of the SLAS903D datasheet, which lists "N/A" under ADC10_A(Ch) for MSP430F5258.

How many hardware serial interfaces does MSP430F5258IRGCT support?

The MSP430F5258IRGCT supports eight hardware serial interfaces: four USCI_A modules (each configurable as UART, IrDA, or SPI) and four USCI_B modules (each configurable as I²C or SPI). This enables concurrent communication with multiple sensors, radios, and peripherals without software bit-banging overhead.

What is the wake-up time from LPM3 standby mode for MSP430F5258IRGCT?

The MSP430F5258IRGCT wakes up from LPM3 (standby mode with RTC active) in 3.5 µs typical, as specified in Section 1 Features and Section 8.32 of the SLAS903D datasheet. This fast transition supports responsive event handling in battery-constrained systems like wearables and IoT endpoints.

Which package type is used by MSP430F5258IRGCT?

The MSP430F5258IRGCT uses the VQFN-64 (RGC) package, measuring 9 mm × 9 mm with an exposed thermal pad. This package is shared across the MSP430F525x RGC variants and is documented in the Device Information table (page 1) and Figure 7-1 (pin diagram) of SLAS903D.