Texas Instruments MSP430F6459TPZR

Overview

MSP430F6459TPZR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 512 KB flash, 66 KB RAM, integrated 3.3-V LDO, 12-bit ADC (200 ksps, 16 channels), dual 12-bit DACs, three USCI modules (UART/IrDA/SPI/I²C), four 16-bit timers, RTC with battery backup, LCD driver (160 segments), and hardware multiplier. It targets battery-powered sensor systems and portable instrumentation requiring sub-2 µA standby current and fast 3 µs wake-up.

For engineers reviewing the MSP430F6459TPZR datasheet, MSP430F6459TPZR pinout, MSP430F6459TPZR application, or MSP430F6459TPZR equivalent, key selection criteria include its 74 I/O count, PZ (100-pin TQFP) package, LDO-integrated power architecture, real-time clock with crystal support, and mixed-signal integration for analog front-end + display control in single-chip designs.

Technical Context

The MSP430F6459TPZR implements a unified clock system with FLL stabilization, VLO/REFO internal sources, and dual crystal oscillators (XT1 up to 32 kHz, XT2 up to 32 MHz), enabling precise timing across active and low-power modes. Its CPUXV2 core supports 20-MHz operation with constant generators for optimized code density.

Power management includes programmable core voltage regulation via integrated LDO, supply supervision (SVM/SVS), brownout detection, and five low-power modes-LPM3 (2 µA), LPM3.5 (1.1 µA RTC-active), and LPM4.5 (0.45 µA shutdown)-all retaining full RAM and peripheral state where applicable.

Key Specifications

Pinout & Package

Package: PZ - 100-pin TQFP (16.0 mm × 16.0 mm), thermally enhanced, RoHS-compliant, with exposed thermal pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6459TPZR, the MSP430F6638TPZR adds USB but reduces I²C flexibility, while the MSP430F5638IZQWR trades LCD/analog integration for smaller size and lower cost-making the MSP430F6459TPZR optimal for display-equipped, sensor-rich, battery-operated instruments needing maximum analog and timing resources in TQFP form.

Availability

MSP430F6459TPZR is available at Aetrix Electronics and suitable for smart thermostats, handheld meters, remote motor controllers, and analog sensor nodes requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MSP430F6459TPZR 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 design and industrial-grade reliability.

The MSP430F6459TPZR belongs to TI's MSP430F6xx ultra-low-power MCU family, engineered for battery-operated measurement and control applications demanding extended runtime, high analog integration, and robust real-time operation in harsh environments.

FAQ

What is the maximum operating frequency of the MSP430F6459TPZR?

The MSP430F6459TPZR supports a maximum system clock frequency of 20 MHz, enabled by its digitally controlled oscillator (DCO) and FLL-based unified clock system. This allows high-speed execution while maintaining ultra-low-power efficiency, with active-mode current specified at 295 µA/MHz at 8 MHz and 3 V. The device achieves this performance without external high-frequency crystals, though XT2 supports up to 32 MHz for specialized timing or USB-capable derivatives.

Does the MSP430F6459TPZR include an integrated LCD driver?

Yes, the MSP430F6459TPZR integrates the LCD_B peripheral capable of driving up to 160 segments in static, 2-, 3-, or 4-mux configurations. It provides programmable contrast control, internal charge pump, and direct segment/common pin mapping across multiple ports (P1–P9, PJ). This eliminates the need for external LCD bias generators or driver ICs, reducing system cost and board area in portable instrumentation and consumer displays.

What low-power modes does the MSP430F6459TPZR support, and what is the lowest current draw?

The MSP430F6459TPZR supports five low-power modes (LPM0–LPM4), with LPM3 drawing just 2 µA at 3 V (full RAM retention, watchdog + crystal active) and LPM3.5 (RTC mode) consuming only 1.1 µA at 3 V with RTC running from 32-kHz crystal. Its deepest shutdown mode, LPM4.5, draws 0.45 µA at 3 V-ideal for long-term storage or infrequent wake-up applications like utility meters or environmental loggers.

Can the MSP430F6459TPZR operate without an external crystal?

Yes, the MSP430F6459TPZR can operate entirely from internal clock sources: the low-power VLO (10 kHz) and trimmed REFO (32.768 kHz), both usable for LPM3 and RTC operation. External crystals (XT1 for 32.768 kHz, XT2 up to 32 MHz) are optional enhancements for higher accuracy or speed. The FLL automatically stabilizes DCO frequency using any selected reference, ensuring reliable startup and operation without mandatory crystal dependencies.

How many I/O pins does the MSP430F6459TPZR provide, and are they all individually configurable?

The MSP430F6459TPZR provides 74 general-purpose I/O pins in its 100-pin PZ package, with all pins individually configurable as digital inputs/outputs, interrupt-capable, and mappable to multiple secondary functions (USCI, timers, ADC, LCD, comparator). Each port supports independent drive strength control, Schmitt-trigger inputs, and programmable pullup/pulldown resistors-enabling flexible interface design without external level-shifting or buffering components.