Texas Instruments MSP430F5326IZQER

Overview

MSP430F5326IZQER from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller with 96 KB flash, 8 KB+2 KB RAM, integrated 3.3-V LDO, 12-bit ADC (10 external + 2 internal channels), two USCI modules (UART/IrDA/SPI/I²C), four 16-bit timers, RTC, hardware multiplier, and DMA - designed for battery-powered sensor nodes and portable data loggers.

For engineers reviewing the MSP430F5326IZQER datasheet, MSP430F5326IZQER pinout, MSP430F5326IZQER application, or MSP430F5326IZQER equivalent, key selection criteria include standby current (1.9 µA in LPM3), wake-up time (3.5 µs), 47 I/O count, MicroStar Junior BGA (80-pin) package compatibility, and integrated LDO regulation for single-supply operation.

Technical Context

The MSP430F5326IZQER implements a CPUXV2 core with constant generators and 16-bit register architecture, paired with a unified clock system featuring FLL-based frequency stabilization, dual crystal support (XT1 up to 32 kHz, XT2 up to 32 MHz), and low-power internal sources (VLO, REFO). Its power management includes programmable core voltage via integrated LDO and brownout detection with hysteresis.

Peripherals are organized around three USCI modules (two functional: USCI_A0/A1 and USCI_B0/B1), a 12-bit ADC12_A with autoscan and internal reference, Timer_A (three instances: TA0/TA1/TA2) and Timer_B (TB0) with capture/compare shadow registers, and RTC_A with alarm capability - all accessible through configurable port mapping and interrupt vectoring.

Key Specifications

Pinout & Package

Package: MicroStar Junior™ BGA (ZQE), 80-pin, 5 mm × 5 mm, 0.5-mm pitch, thermal pad connected to VSS per TI recommendation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5326IRGC, the MSP430F5326IZQER offers higher I/O density in smaller area but requires BGA assembly; compared with MSP430F5324IZQER, it provides 32 KB more flash for future firmware updates or feature expansion without changing package or layout.

Availability

MSP430F5326IZQER is available at Aetrix Electronics and suitable for wireless sensor nodes, portable data loggers, and smart meter interface modules requiring stable component supply and long-term lifecycle support.

Supply support for MSP430F5326IZQER 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and consumer markets.

The MSP430F532x product line targets ultra-low-power portable measurement systems, emphasizing extended battery life, integrated analog front-ends, and flexible clock/power management for sensor-centric applications.

FAQ

What is the maximum system clock frequency supported by the MSP430F5326IZQER?

The MSP430F5326IZQER supports a maximum system clock (MCLK) frequency of 25 MHz, achieved using the FLL-controlled DCO or external high-frequency crystal (XT2) up to 32 MHz. This allows real-time processing of sensor data at high throughput while maintaining ultra-low-power operation in active mode (290 µA/MHz at 8 MHz, 3 V). The MSP430F5326IZQER's clock system dynamically scales performance to match workload demands.

Does the MSP430F5326IZQER include an integrated voltage regulator?

Yes, the MSP430F5326IZQER integrates a fully regulated 3.3-V LDO with programmable core voltage, accepting 3.3 V–3.6 V on LDOI and delivering stable LDOO for DVCC domains. This eliminates external regulators in single-supply designs and enables direct connection to common battery or power rail sources. The MSP430F5326IZQER's LDO supports dynamic voltage scaling to optimize active-mode current consumption.

How many analog input channels does the MSP430F5326IZQER ADC support?

The MSP430F5326IZQER features a 12-bit ADC12_A with 10 external analog input channels and 2 internal channels (temperature sensor and VREF+/VeREF+), totaling 12 usable inputs. It supports autoscan mode for unattended sequential conversion and internal reference options (1.5 V or 2.5 V) - all confirmed in the device-specific functional block diagram and Table 6-1. This configuration is fixed for the MSP430F5326IZQER variant.

What package type is used for the MSP430F5326IZQER?

The MSP430F5326IZQER uses the MicroStar Junior™ BGA (ZQE) package: 80-ball, 5 mm × 5 mm, 0.5-mm pitch, with an exposed thermal pad that TI recommends connecting to VSS. This package is explicitly listed in the Device Information table and functional block diagrams for the F5328/F5326/F5324 group. The ZQE variant is distinct from RGC (VQFN-64) and ZXH (nFBGA-80) variants.

Can the MSP430F5326IZQER operate from a 1.8-V supply?

Yes, the MSP430F5326IZQER operates across a supply voltage range of 1.8 V to 3.6 V, as specified in its absolute maximum ratings and recommended operating conditions. At 1.8 V, it maintains full functionality including flash programming, RTC operation, and peripheral use - though maximum clock frequency is reduced per the VCC vs. fMCLK derating curve. This wide range supports direct connection to primary lithium or alkaline cells without regulation.