Texas Instruments MSP430F4260IRGZT

Overview

MSP430F4260IRGZT from Texas Instruments is an ultralow-power 16-bit mixed-signal microcontroller featuring 24KB+256B Flash, 256B RAM, a 16-bit sigma-delta ADC with internal reference and five differential analog inputs, a 12-bit DAC, Timer_A3 with three capture/compare registers, integrated LCD driver for up to 56 segments, and brownout detection - deployed in battery-powered handheld meters and digital thermostats.

For engineers reviewing the MSP430F4260IRGZT datasheet, MSP430F4260IRGZT pinout, MSP430F4260IRGZT application, or MSP430F4260IRGZT equivalent, key selection criteria include its 1.8–3.6 V supply range, <6 μs wake-up from standby, 250 μA active current at 1 MHz/2.2 V, and QFN-48 (RGZ) package compatibility with space-constrained sensor interfaces.

Technical Context

The MSP430F4260IRGZT implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling high code efficiency and single-cycle register operations. Its FLL+ clock system integrates a digitally controlled oscillator (DCO), 32.768 kHz watch crystal support, and programmable ACLK/MCLK/SMCLK outputs - delivering sub-6 μs wake-up and stable timing across five low-power modes.

Peripherals are memory-mapped and accessible via full instruction set support. The SD16_A module provides 16-bit sigma-delta conversion with internal temperature sensing and VCC monitoring, while the DAC12 delivers voltage-mode 12-bit output on P1.4/A3−/DAC0. LCD_A supports static to 4-MUX displays with software-controllable contrast via integrated charge pump.

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 MSP430F4250IRGZT and MSP430F4270IRGZT, the MSP430F4260IRGZT offers optimal balance of code space (24KB), identical low-power performance, and full peripheral integration - making it ideal for mid-complexity metering and control applications where 16KB is insufficient but 32KB is excessive.

Availability

MSP430F4260IRGZT is available at Aetrix Electronics and suitable for handheld meters, programmable thermostats, and digital timers requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant QFN packaging.

Supply support for MSP430F4260IRGZT 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 ultralow-power design.

The MSP430F42x0 product line targets portable measurement and battery-powered human-interface applications, integrating precision analog, LCD control, and aggressive power management into a single chip.

FAQ

What is the maximum operating frequency of the MSP430F4260IRGZT at 3.6 V?

The MSP430F4260IRGZT supports a maximum system clock (MCLK) frequency of 8 MHz at 3.6 V, as specified in the recommended operating conditions. This limit ensures stable operation of the FLL+ module and internal peripherals. At lower supply voltages (e.g., 1.8 V), the maximum frequency reduces to 4.15 MHz to maintain timing margins. The MSP430F4260IRGZT achieves this performance while maintaining ultralow active current - 250 μA at 1 MHz and 2.2 V - making it suitable for energy-constrained applications.

Does the MSP430F4260IRGZT support JTAG debugging and in-system programming?

Yes, the MSP430F4260IRGZT fully supports IEEE 1149.1 JTAG debugging via dedicated TCK, TMS, TDI, and TDO pins (RGZ pins 46, 45, 44, and 43). It enables full-speed emulation, flash programming, and boundary scan. In addition, the MSP430F4260IRGZT includes a UART-based bootstrap loader (BSL) accessible through P1.0 and P1.1, allowing in-system programming without JTAG hardware - useful for field firmware updates or cost-sensitive production lines.

How many LCD segments can the MSP430F4260IRGZT drive, and what mux configurations are supported?

The MSP430F4260IRGZT's LCD_A module drives up to 56 segments using static, 2-MUX, 3-MUX, or 4-MUX configurations. With four common outputs (COM0–COM3), it supports up to 4 × 13 = 52 segments in 4-MUX mode, plus additional segment pins (e.g., S5, P2.7–P2.0) extending total capacity to 56. Contrast is software-adjustable via charge-pump voltage control registers (LCDAVCTL0/1), eliminating external potentiometers. This capability makes the MSP430F4260IRGZT ideal for custom segment-based displays in meters and thermostats.

What analog inputs are available on the MSP430F4260IRGZT, and are they differential?

The MSP430F4260IRGZT features five differential analog input pairs for its 16-bit sigma-delta SD16_A converter: 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). All five channels support true differential measurement with programmable gain and internal reference. Additionally, the SD16_A module provides internal VCC sense and temperature sensor inputs - no external components required for system health monitoring. These capabilities are documented in the SLAS455D datasheet section on SD16_A.

Is the MSP430F4260IRGZT pin-compatible with other devices in the MSP430F42x0 family?

Yes, the MSP430F4260IRGZT is pin-compatible with the MSP430F4250IRGZT and MSP430F4270IRGZT in the same RGZ (48-pin QFN) package - sharing identical pin functions, electrical characteristics, and peripheral mappings. This allows direct substitution within the same PCB layout when scaling Flash size (16KB ↔ 24KB ↔ 32KB) without redesign. However, firmware must be validated for memory map differences (e.g., interrupt vector table location shifts between variants), and security fuse settings may require reprogramming after replacement.