Texas Instruments MSP430F5253IRGCR

Overview

MSP430F5253IRGCR from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller designed as an "always-on" system controller for portable and battery-powered devices. It features 128 KB flash, 16 KB RAM, dual-supply operation (DVCC: 1.8–3.6 V; DVIO: 1.62–1.98 V), four USCI_A (UART/IrDA/SPI) and four USCI_B (I²C/SPI) modules, and operates at up to 25 MHz. It serves in sensor hub and power-management roles where fast wake-up (3.5 µs) and sub-µA standby current (1.6 µA at 3.0 V in LPM3) are critical.

For engineers reviewing the MSP430F5253IRGCR datasheet, MSP430F5253IRGCR pinout, MSP430F5253IRGCR application, or MSP430F5253IRGCR equivalent, key selection criteria include split-rail I/O voltage support (1.8-V DVIO rail), 35 total GPIOs with 18 DVCC and 35 DVIO-capable pins, RTC-integrated low-power modes, hardware multiplier, and 10-bit ADC with internal reference - all validated for sensor fusion and system control use cases.

Technical Context

The MSP430F5253IRGCR implements a unified clock system with FLL stabilization, VLO and REFO internal sources, XT1 (32-kHz crystal), and XT2 (up to 32-MHz HF crystal). Its power architecture integrates a programmable LDO core regulator, supply voltage supervision (SVS/SVM), and brownout reset - enabling robust operation across variable battery conditions.

Peripheral integration includes three 16-bit Timer_A instances (5/3/3 capture/compare registers), one 16-bit Timer_B (7 registers), 10-bit ADC10_A (12-channel, 200 ksps), comparator_B (8 channels), 3-channel DMA, and RTC_A with alarm. All I/O ports are mapped to either DVCC or DVIO domains, with interrupt/wakeup capability on P1, P2, P6, and PJ pins.

Key Specifications

Pinout & Package

VQFN-64 (RGCR) package, 9 mm × 9 mm body, 0.5-mm pitch, thermally enhanced with exposed thermal pad. Pin functions validated per TI SLAS903D Rev. D (October 2020), Figure 7-1 and Table 7-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5252IRGCR, the MSP430F5253IRGCR adds essential analog measurement capability via its 10-bit ADC and internal reference - making it suitable for sensor-based applications where MSP430F5252IRGCR falls short. Against MSP430F5255IRGCR, it shares full peripheral equivalence except BSL interface type, offering equal performance for most embedded control and data acquisition use cases.

Availability

MSP430F5253IRGCR is available at Aetrix Electronics and suitable for wearable health monitors, smart home sensor hubs, and industrial data loggers requiring stable component supply, long-lifecycle support, and verified ultra-low-power performance.

Supply support for MSP430F5253IRGCR 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 specializing in analog, embedded processing, and connectivity technologies, with decades of expertise in ultra-low-power microcontroller design.

The MSP430F525x product line was engineered specifically for "always-on" system controller applications - delivering split-rail I/O, sub-µA standby, and integrated peripherals to replace discrete power-management and sensor-interface circuitry in portable electronics.

FAQ

What is the maximum operating frequency of the MSP430F5253IRGCR?

The MSP430F5253IRGCR supports a maximum system clock frequency of 25 MHz, enabled by its integrated FLL-controlled DCO and optional external XT2 crystal oscillator (up to 32 MHz). This frequency is achievable under recommended operating conditions (DVCC ≥ 2.2 V), and the device maintains timing compliance across its full active-mode current range (290 µA/MHz typical at 8 MHz, 3.0 V).

Does the MSP430F5253IRGCR support both 1.8-V and 3.0-V I/O simultaneously?

Yes, the MSP430F5253IRGCR implements true dual-supply I/O: DVIO (1.62–1.98 V) powers P1, P2, P3, P4, P7, and PJ pins for 1.8-V interface compatibility, while DVCC (1.8–3.6 V) powers P5, P6, and analog peripherals. This eliminates external level shifters when interfacing with 1.8-V sensors or application processors - a core feature confirmed in the device description and pin-function tables of SLAS903D.

What low-power modes are available on the MSP430F5253IRGCR, and what is the lowest current draw?

The MSP430F5253IRGCR offers five low-power modes (LPM0–LPM4.5). The lowest active-retention mode is LPM4 (Off mode) at 1.3 µA @ 3.0 V, and the lowest with RTC operation is LPM3 (Standby) at 1.6 µA @ 3.0 V. LPM4.5 (Shutdown) draws just 0.18 µA @ 3.0 V but loses RAM retention. All values are typical and specified in Section 8.5 of the official datasheet SLAS903D.

How many hardware serial interfaces does the MSP430F5253IRGCR include, and what protocols do they support?

The MSP430F5253IRGCR integrates eight hardware serial interfaces: four USCI_A modules (each supporting UART, IrDA, and SPI) and four USCI_B modules (each supporting I²C and SPI). This enables concurrent communication with multiple sensors and peripherals - for example, four I²C sensors and four SPI devices - without CPU intervention or software emulation overhead.

Is the MSP430F5253IRGCR pin-compatible with other members of the MSP430F525x family in the RGC package?

Yes, all MSP430F525x devices in the 64-pin VQFN (RGC/RGCR) package share identical pinout and footprint, including MSP430F5252IRGCR, MSP430F5253IRGCR, MSP430F5254IRGCR, and MSP430F5255IRGCR. This allows direct substitution within the same PCB layout, provided peripheral configuration (e.g., ADC usage, BSL type) aligns with firmware requirements.