Texas Instruments MSP430F4270IRGZR

Overview

MSP430F4270IRGZR from Texas Instruments is an ultralow-power 16-bit mixed-signal microcontroller with 32KB+256B flash, 256B RAM, integrated 16-bit sigma-delta ADC (5 differential inputs), 12-bit DAC, LCD driver for up to 56 segments, and Timer_A3 with three capture/compare registers - deployed in battery-powered handheld meters and digital thermostats.

For engineers reviewing the MSP430F4270IRGZR datasheet, MSP430F4270IRGZR pinout, MSP430F4270IRGZR application, or MSP430F4270IRGZR equivalent, key selection criteria include active-mode current (250 μA @ 1 MHz, 2.2 V), wake-up time (<6 μs from standby), supply range (1.8–3.6 V), LCD segment drive capability, and JTAG/BSL programming support.

Technical Context

The MSP430F4270IRGZR 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), 32.768 kHz watch crystal input (XIN/XOUT), and programmable ACLK/MCLK/SMCLK distribution.

Peripherals are memory-mapped and accessible via all CPU instructions. The SD16_A module provides 16-bit sigma-delta conversion with internal reference and temperature sensor input; DAC12 delivers 12-bit voltage output on P1.4/A3−/DAC0; LCD_A supports static/2–4 MUX displays using dedicated segment/common pins and regulated charge-pump contrast control.

Key Specifications

Pinout & Package

Package: 48-pin QFN (RGZ), 7 mm × 7 mm, 0.5 mm pitch, exposed thermal pad connected to DVSS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F4260IRGZ and MSP430F4250IRGZ, the MSP430F4270IRGZR provides 33% more flash than the F4260 and doubles flash versus the F4250 - enabling richer firmware features (e.g., calibration tables, OTA update buffers, advanced UI graphics) without changing PCB layout or power design.

Availability

MSP430F4270IRGZR is available at Aetrix Electronics and suitable for handheld meters, smart thermostats, digital timers, and remote sensor nodes requiring stable component supply across long-lifecycle industrial and consumer programs.

Supply support for MSP430F4270IRGZR 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 microcontroller innovation.

The MSP430F4270IRGZR belongs to the MSP430x4xx ultralow-power mixed-signal MCU family, designed specifically for battery-operated measurement and display applications demanding extended runtime and integrated analog front-end functionality.

FAQ

What is the maximum operating frequency of the MSP430F4270IRGZR at 3.6 V?

The MSP430F4270IRGZR supports a maximum system clock (MCLK) frequency of 8 MHz at 3.6 V, as specified in the recommended operating conditions. This limit is enforced by the FLL+ module's DCO stability constraints and ensures reliable CPU and peripheral operation across the full temperature range (−40°C to 85°C). The MSP430F4270IRGZR achieves this without external high-frequency crystals, relying instead on its internal digitally controlled oscillator.

Does the MSP430F4270IRGZR support JTAG debugging and in-circuit programming?

Yes, the MSP430F4270IRGZR fully supports IEEE 1149.1 JTAG debugging and programming via TCK, TMS, TDI, and TDO pins (RGZ package pins 46, 45, 44, and 43). It enables full boundary scan, flash erase/write, and real-time register inspection. The MSP430F4270IRGZR also supports Spy-Bi-Wire (2-wire JTAG) for space-constrained designs, retaining full debug capability with only two signal lines.

How many LCD segments can the MSP430F4270IRGZR drive, and what multiplexing configurations are supported?

The MSP430F4270IRGZR's LCD_A module drives up to 56 segments using four commons (COM0–COM3), supporting static, 2-MUX, 3-MUX, and 4-MUX configurations. Segment outputs are assigned across P5, P2, and P6 ports (e.g., P5.0/S1, P2.7/S6), while COM signals map to P5.2–P5.4 and COM0. This matches standard 4-MUX character LCD modules used in handheld meters and thermostats without external drivers.

What analog inputs are available on the MSP430F4270IRGZR's SD16_A module?

The SD16_A module on the MSP430F4270IRGZR provides five differential analog input channels: A0± (P6.0/P6.1), A1± (P6.2/P6.3), A2± (P1.7/P1.6), A3± (P1.5/P1.4), and A4± (P1.3/P1.2). Additionally, it supports internal VCC sense and temperature sensor inputs. All channels share the same 16-bit sigma-delta core and internal reference, enabling simultaneous high-resolution measurements across multiple sensors in the MSP430F4270IRGZR.

Is the MSP430F4270IRGZR pin-compatible with other devices in the MSP430F42x0 family?

Yes, the MSP430F4270IRGZR is pin-compatible with the MSP430F4250IRGZ and MSP430F4260IRGZ in the RGZ package - sharing identical 48-pin QFN footprints, pin functions, and electrical characteristics. This allows direct hardware reuse across variants; firmware must be recompiled to match flash size and memory map differences, but no PCB redesign is needed when upgrading from F4250/F4260 to MSP430F4270IRGZR.