Texas Instruments MSP430F6433IZQWR

Overview

MSP430F6433IZQWR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with integrated 128 KB flash, 10 KB RAM, 12-bit ADC (200 ksps, 16 channels), dual USCI modules (UART/IrDA/SPI/I²C), four 16-bit timers, RTC with alarm, LCD driver (160 segments), and programmable LDO. It operates from 1.8 V to 3.6 V and targets battery-powered sensor systems and portable meters.

For engineers reviewing the MSP430F6433IZQWR datasheet, MSP430F6433IZQWR pinout, MSP430F6433IZQWR application, or MSP430F6433IZQWR equivalent, key selection criteria include its MicroStar Junior™ BGA-113 package, 74 I/O pins, LPM3.5 RTC mode (1.1 µA), 3 µs wake-up time, and absence of DAC channels-distinguishing it from MSP430F6438/F6435.

Technical Context

The MSP430F6433IZQWR implements a unified clock system with FLL stabilization, VLO/REFO internal sources, and support for 32-kHz XT1 and up to 32-MHz XT2 crystals. Its power management includes programmable core voltage regulation via integrated LDO and brownout detection with hysteresis.

Peripherals are organized around six I/O ports (P1–P9, PU), DMA controller (6-channel), hardware multiplier (32-bit), and memory-mapped peripherals including ADC12_A with autoscan, Comp_B, and LCD_B. The device lacks USB and DAC blocks-confirmed by Device Comparison Table 6-1-and uses JTAG/Spy-Bi-Wire for debug and programming.

Key Specifications

Pinout & Package

Package: MicroStar Junior™ BGA-113 (7 mm × 7 mm), ball pitch 0.5 mm, RoHS-compliant. Pinout matches Figure 7-2 (MSP430F6435/F6433 100-pin PZ functional mapping adapted to BGA layout per TI SLAS720F Section 7.1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F6435IZQWR and MSP430F6436IPZ, the MSP430F6433IZQWR provides optimal balance of ultra-low-power operation, integrated peripherals, and compact BGA packaging - making it ideal for cost-sensitive, space-limited, battery-operated measurement devices where DACs are unnecessary.

Availability

MSP430F6433IZQWR is available at Aetrix Electronics and suitable for smart thermostats, handheld meters, digital timers, and remote sensor nodes requiring stable component supply throughout product lifecycle.

Supply support for MSP430F6433IZQWR 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 specializing in analog, embedded processing, and connectivity technologies, with leadership in low-power design and industrial-grade reliability.

The MSP430F6433IZQWR belongs to the MSP430F643x ultra-low-power MCU family, engineered for extended battery life in portable measurement, sensing, and human-interface applications - emphasizing energy efficiency over raw performance.

FAQ

What is the maximum operating frequency of the MSP430F6433IZQWR?

The MSP430F6433IZQWR supports a maximum system clock frequency of 20 MHz, enabled by its digitally controlled oscillator (DCO) and FLL-based clock system. This frequency is achievable with proper XT2 crystal configuration or internal calibration. The device maintains full functionality-including ADC sampling, USCI communication, and timer operations-at this rate, as verified in Section 8.20 (DCO Frequency) and Section 8.38 (ADC timing) of the SLAS720F datasheet. MSP430F6433IZQWR delivers deterministic real-time response without exceeding its ultra-low-power design envelope.

Does the MSP430F6433IZQWR include a DAC?

No, the MSP430F6433IZQWR does not include a digital-to-analog converter. This is explicitly confirmed in Table 6-1 (Device Comparison) of the SLAS720F datasheet, where the DAC12_A column shows "–" for MSP430F6433 and MSP430F6436, unlike MSP430F6438 and MSP430F6435 which list "2" channels. The functional block diagram in Figure 4-2 also omits DAC12_A. Therefore, designs requiring analog output must use external DACs or alternative MSP430 variants such as MSP430F6435IZQWR.

What package type and pin count does the MSP430F6433IZQWR use?

The MSP430F6433IZQWR uses the MicroStar Junior™ BGA-113 package - a 7 mm × 7 mm body with 113 solder balls and 0.5 mm pitch. This is documented in the Device Information table (page 1) and Section 11 (Mechanical, Packaging, and Orderable Information) of SLAS720F. While the functional pin mapping aligns with the 100-pin PZ package (Figure 7-2), the ZQW variant implements identical I/O functionality in a smaller, surface-mount BGA form factor optimized for high-density PCB layouts.

How many I/O pins does the MSP430F6433IZQWR provide?

The MSP430F6433IZQWR provides 74 general-purpose I/O pins, distributed across ports P1–P9 and PU. This count is consistent across all MSP430F643x variants (F6433/F6435/F6436/F6438) and is specified in Table 6-1 under the "I/O" column. Each port supports interrupt capability, configurable drive strength, and peripheral function multiplexing - enabling flexible hardware design for sensor interfaces, display control, and communication peripherals without external logic.

What is the standby current consumption of the MSP430F6433IZQWR?

In Standby mode (LPM3), the MSP430F6433IZQWR consumes 1.8 µA at 2.2 V and 2.1 µA at 3.0 V (typical), with watchdog, crystal oscillator, and supply supervisor active plus full RAM retention. This value is measured with all clocks running except MCLK, and is specified in Section 1 (Features) and Section 8.5 (Low-Power Mode Supply Currents) of SLAS720F. Fast 3 µs wake-up from this state ensures responsiveness while maintaining multi-year battery life in always-on monitoring applications.