Texas Instruments MSP430FG4270IDLR

Overview

MSP430FG4270IDLR from Texas Instruments is a 16-bit ultralow-power mixed-signal microcontroller featuring 32KB+256B Flash, 256B RAM, a 16-bit sigma-delta ADC with internal reference and five differential analog inputs, a 12-bit DAC, two configurable op-amps, and integrated LCD driver supporting up to 56 segments - deployed in portable sensor systems and battery-powered metering applications.

For engineers reviewing the MSP430FG4270IDLR datasheet, MSP430FG4270IDLR pinout, MSP430FG4270IDLR application, or MSP430FG4270IDLR equivalent, key selection criteria include active-mode current (250 μA @ 1 MHz, 2.2 V), wake-up time (<6 μs from standby), LCD segment drive capability (56 seg), sigma-delta ADC resolution (16-bit), and SSOP-48 package compatibility with industrial temperature range (−40°C to 85°C).

Technical Context

The MSP430FG4270IDLR implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations and high code efficiency. Its FLL+ clock system integrates a digitally controlled oscillator (DCO) and supports ACLK (32.768 kHz crystal), MCLK (system clock), and SMCLK (peripheral clock), with fast DCO stabilization (<6 μs) for rapid low-power mode exit.

Peripherals are memory-mapped and accessible via standard instructions: SD16_A provides 16-bit sigma-delta conversion with internal VCC/temperature sensing; DAC12 delivers 12-bit voltage output; OA0/OA1 support programmable input multiplexing and feedback paths for analog front-end conditioning; Timer_A3 offers three capture/compare registers for PWM, timing, and event capture.

Key Specifications

Pinout & Package

Package: 48-pin Plastic SSOP (DL), body size 10.2 mm × 5.3 mm, pitch 0.635 mm, JEDEC MS-012AC compliant. Pinout validated per SLAS556A Rev. August 2007, DL package top-view mapping.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430FG4250IDL and MSP430FG4260IDL, the MSP430FG4270IDLR provides maximum Flash headroom for complex sensor fusion, secure bootloader space, and future firmware enhancements - critical for certified medical or industrial devices requiring revision traceability and field-upgradable features.

Availability

MSP430FG4270IDLR is available at Aetrix Electronics and suitable for hand-held meters, smart thermostats, and portable gas detectors requiring stable component supply across extended production lifecycles.

Supply support for MSP430FG4270IDLR 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 over 90 years of innovation in low-power design.

The MSP430FG42x0 product line targets ultra-low-power portable measurement applications, integrating high-precision analog peripherals and LCD drivers to minimize external components in battery-constrained systems.

FAQ

What is the maximum operating frequency of the MSP430FG4270IDLR?

The MSP430FG4270IDLR does not specify a maximum system clock frequency in its datasheet; instead, it guarantees correct operation up to 8 MHz via the FLL+ module's DCO output. The 125-ns instruction cycle time corresponds to a 8-MHz CPU clock, and all timing specifications (e.g., ADC conversion, timer resolution) are validated within this operational envelope. The MSP430FG4270IDLR achieves this using its integrated digitally controlled oscillator stabilized by the FLL+ loop.

Does the MSP430FG4270IDLR support hardware UART communication?

No, the MSP430FG4270IDLR does not include a dedicated hardware UART peripheral. Serial communication is implemented via software UART on GPIO pins - most commonly using P1.0 (TX) and P1.1 (RX) for the bootstrap loader (BSL). For full-duplex asynchronous communication, developers must implement bit-banged UART or use Timer_A outputs for precise baud rate generation. The MSP430FG4270IDLR relies on its JTAG and BSL interfaces for programming and debug, not hardware UART.

Can the MSP430FG4270IDLR drive a 4-MUX LCD with more than 56 segments?

No, the MSP430FG4270IDLR's LCD_A module supports up to 56 segments total when configured for 4-MUX operation (i.e., 4 commons × 14 segments per common = 56). It cannot exceed this limit due to fixed memory mapping and pin resource allocation - P5.x, P2.x, and P6.x pins are hardwired to specific segment/common functions. Driving larger displays requires external LCD controllers or migration to higher-pin-count MSP430 variants like the MSP430FR6989.

What is the purpose of the OA0I0, OA0I1, and OA0I2 pins on the MSP430FG4270IDLR?

These pins - P1.6/OA0I0, P6.4/OA0I1, and P6.5/OA0I2 - serve as selectable input terminals for operational amplifier OA0. Software configures which input is routed to the OA0 inverting or non-inverting node via OA0CTL0 register bits. This enables flexible front-end configurations: OA0I0 supports direct sensor connection (e.g., thermistor bridge), OA0I1/OA0I2 allow differential or gain-setting feedback paths - essential for programmable-gain instrumentation amplifier setups without external components.

Is the MSP430FG4270IDLR pin-compatible with other members of the MSP430FG42x0 family?

Yes, the MSP430FG4270IDLR in the DL (SSOP-48) package is fully pin-compatible with the MSP430FG4250IDL and MSP430FG4260IDL in the same package. All share identical pin functions, electrical characteristics, and thermal ratings across −40°C to 85°C. Firmware developed for one can run unmodified on another, though Flash size differences require linker script adjustment. This compatibility simplifies design reuse and migration across performance tiers within the same hardware layout.