Texas Instruments MSP430F6458IZQWR

Overview

MSP430F6458IZQWR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller with 384 KB flash, 34 KB RAM, integrated LDO, USB-free architecture, and 74 GPIOs. It features a 12-bit ADC (200 ksps, 16 channels), dual 12-bit DACs, RTC with battery backup, four 16-bit timers, three USCI modules (UART/IrDA/SPI/I²C), and LCD driver for up to 160 segments - deployed in battery-powered sensor nodes and portable meters.

For engineers reviewing the MSP430F6458IZQWR datasheet, MSP430F6458IZQWR pinout, MSP430F6458IZQWR application, or MSP430F6458IZQWR equivalent, key selection criteria include LDO-integrated power management, absence of USB PHY (distinguishing it from F665x/F565x), MicroStar Junior BGA-113 package constraints, and verified LPM3 standby current of 2.0 µA at 3.0 V.

Technical Context

The MSP430F6458IZQWR implements a CPUXV2 core with constant generators and 16-bit RISC architecture, operating up to 20 MHz via FLL-stabilized DCO or external crystals (XT1 up to 32 kHz, XT2 up to 32 MHz). Its unified clock system integrates VLO and REFO internal sources, enabling sub-µA LPM3.5 (RTC active) and LPM4.5 (0.45 µA shutdown) modes.

Peripheral integration includes three USCI modules - USCI_Ax supporting UART/IrDA/SPI and USCI_Bx supporting I²C/SPI - with no USB-PHY or USB-PLL circuitry. The device uses an integrated 3.3-V LDO for core regulation, supports full RAM retention in LPM3, and wakes in 3 µs from standby - confirmed across all MSP430F645x variants including MSP430F6458IZQWR.

Key Specifications

Pinout & Package

MicroStar Junior™ BGA-113 package with 0.5-mm pitch, 7 mm × 7 mm body size, and 113 solder balls arranged in 11 × 11 array with corner balls omitted. Thermal pad exposed on underside for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6458IPZ, the MSP430F6458IZQWR reduces board area by 70% but requires advanced assembly; versus MSP430F5358IZQW, it adds LCD_B driver and RTC enhancements while retaining identical power profile and GPIO count.

Availability

MSP430F6458IZQWR is available at Aetrix Electronics and suitable for hand-held meters, digital thermostats, and analog sensor systems requiring stable component supply through extended production lifecycles.

Supply support for MSP430F6458IZQWR 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 company headquartered in Dallas, Texas, delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The MSP430F645x product line targets ultra-low-power portable instrumentation and sensor-edge devices, emphasizing extended battery life, integrated analog front-ends, and minimal external component count.

FAQ

What is the maximum system clock frequency supported by the MSP430F6458IZQWR?

The MSP430F6458IZQWR supports a maximum system clock frequency of 20 MHz, achieved via its digitally controlled oscillator (DCO) with FLL stabilization or through external high-frequency crystals up to 32 MHz on the XT2 oscillator input. This frequency is confirmed in the device's functional block diagram and electrical specifications table for the MSP430F645x series, and applies identically to the MSP430F6458IZQWR variant in MicroStar Junior BGA-113 packaging.

Does the MSP430F6458IZQWR include a USB interface?

No, the MSP430F6458IZQWR does not include a USB interface. Unlike the MSP430F665x and MSP430F565x families, the MSP430F645x series - including the MSP430F6458IZQWR - omits the USB-PHY, USB-PLL, and associated power circuitry. This is explicitly stated in the device comparison table and functional block diagrams, making the MSP430F6458IZQWR appropriate for applications where USB connectivity is unnecessary and board space/power budget must be minimized.

What is the standby current consumption of the MSP430F6458IZQWR in LPM3 mode?

The MSP430F6458IZQWR consumes 2.0 µA in LPM3 mode at 3.0 V, with watchdog timer and crystal oscillator active and full RAM retention enabled. This value is specified in the "Ultra-low power consumption" section of the datasheet and confirmed across all MSP430F645x devices, including the MSP430F6458IZQWR in MicroStar Junior BGA-113 packaging. It enables multi-year operation on standard CR2032 coin cells in always-on sensing applications.

Which package type is used for the MSP430F6458IZQWR?

The MSP430F6458IZQWR uses the MicroStar Junior™ BGA-113 package, measuring 7 mm × 7 mm with 0.5-mm ball pitch. This package is documented in the Device Information table and confirmed in the revision history, which notes that ZQW-packaged MSP430F6458 devices were available prior to Last Time Buy status. The pinout and thermal characteristics are identical to other ZQW variants in the MSP430F645x family.

Can the MSP430F6458IZQWR drive an LCD display directly?

Yes, the MSP430F6458IZQWR integrates the LCD_B peripheral capable of driving up to 160 segments with programmable bias and contrast control. This hardware LCD driver operates independently of the CPU and supports static, 2-, 3-, and 4-mux configurations - confirmed in the device description, functional block diagram, and peripheral feature list. No external LCD controller or driver IC is required when using the MSP430F6458IZQWR in display-enabled applications such as handheld meters or thermostats.