Texas Instruments MSP430F5638IZQWR

Overview

MSP430F5638IZQWR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 256 KB flash, 16 KB + 2 KB RAM, integrated USB 2.0 PHY, dual 12-bit DACs, 12-bit ADC with 16 channels (12 external), four 16-bit timers, two USCI modules (UART/IrDA/SPI/I²C), and RTC with battery backup - deployed in portable sensor systems and digital motor control requiring sub-2 µA standby current and 3 µs wake-up.

For engineers reviewing the MSP430F5638IZQWR datasheet, MSP430F5638IZQWR pinout, MSP430F5638IZQWR application, or MSP430F5638IZQWR equivalent, key selection criteria include USB-enabled low-power operation, 74 GPIO count in MicroStar Junior BGA (113-pin), LDO-regulated core voltage, and compatibility with TI's MSP430F5xx toolchain and energy-aware design workflows.

Technical Context

The MSP430F5638IZQWR implements a CPUXV2 16-bit RISC core with constant generators and 20-MHz system clock support, paired with a unified clock system including FLL, VLO, REFO, XT1 (32-kHz), and XT2 (up to 32 MHz). Its power architecture integrates a programmable LDO, supply supervision, brownout detection, and five low-power modes (LPM0–LPM4.5).

Peripherals are tightly synchronized via a 6-channel DMA controller and share memory-mapped registers; USB functionality uses an integrated 3.3-V/1.8-V power system, USB-PLL, and eight endpoints - all operating without external voltage translation. The ADC12_A supports autoscan across 16 inputs with internal reference options (1.5 V/2.0 V/2.5 V), while DAC12_A provides synchronized dual-channel voltage output.

Key Specifications

Pinout & Package

Package: MicroStar Junior™ BGA (ZQW), 113-ball, 7 mm × 7 mm, 0.5-mm pitch, RoHS-compliant. Pinout validated per TI SLAS650G Figure 7-4 (MSP430F5638 ZQW pin diagram) and Section 7.2 signal descriptions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MSP430F5638IZQWR, the MSP430F5636IZQWR offers identical low-power performance and USB capability at lower flash density, while the MSP430F5638IPZ delivers identical functionality in a through-hole-compatible LQFP package - enabling trade-offs between board space, assembly complexity, and firmware scalability.

Availability

MSP430F5638IZQWR is available at Aetrix Electronics and suitable for analog sensor systems, digital motor control, and USB-connected metering devices requiring stable component supply and long-term industrial availability.

Supply support for MSP430F5638IZQWR 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 since 1930.

The MSP430F5638IZQWR belongs to TI's MSP430F5xx ultra-low-power MCU family, engineered for battery-operated measurement and control applications where nanowatt-level power efficiency and integrated analog/USB functionality are critical.

FAQ

What is the maximum system clock frequency supported by the MSP430F5638IZQWR?

The MSP430F5638IZQWR supports a maximum system clock frequency of 20 MHz, achieved via its digitally controlled oscillator (DCO) stabilized by the FLL loop using either internal references (REFO/VLO) or external crystals (XT1/XT2). This frequency is confirmed in Section 8.19 (DCO Frequency) and functional block diagrams of the SLAS650G datasheet, and applies directly to the MSP430F5638IZQWR variant in the ZQW package.

Does the MSP430F5638IZQWR support USB device mode only, or can it act as a USB host?

The MSP430F5638IZQWR supports USB device mode only - it implements a full-speed USB 2.0 peripheral controller with integrated PHY, PLL, and endpoint buffers, but lacks USB host controller logic or OTG capabilities. All USB functionality described in Sections 4.1, 8.50–8.53, and the functional block diagram is strictly device-side, and the MSP430F5638IZQWR cannot enumerate as a USB host.

How many analog input channels does the ADC12_A module support on the MSP430F5638IZQWR?

The ADC12_A module on the MSP430F5638IZQWR supports 16 total input channels: 12 external analog inputs (A0–A11) and 4 internal sources (temperature sensor, VCC/2, VeREF+, and VBATT). This configuration is explicitly stated in Table 6-1 (Device Comparison) and Section 8.34 of the SLAS650G datasheet, and applies identically to the MSP430F5638IZQWR in the ZQW package.

Is the MSP430F5638IZQWR pin-compatible with other members of the MSP430F563x family in the same ZQW package?

Yes - the MSP430F5638IZQWR shares identical pinout, ball assignment, and electrical characteristics with other ZQW-package variants in the MSP430F563x family (e.g., MSP430F5636IZQWR), as confirmed by TI's SLAS650G Figure 7-4 and Section 7.1 pin diagrams. All ZQW devices use the same 113-ball MicroStar Junior layout, enabling direct PCB footprint reuse across flash-size variants.

What is the function of the VCORE pin on the MSP430F5638IZQWR?

The VCORE pin on the MSP430F5638IZQWR provides access to the internal regulated core voltage generated by the integrated LDO - it is an output pin used for external monitoring or decoupling of the 1.8-V core supply. As specified in Section 7.2 (Signal Descriptions) and Figure 4-1 of SLAS650G, VCORE must be bypassed with a 1-µF capacitor to DVSS and is not an input or adjustable rail.