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Texas Instruments MSP430F5631IZQWR — Microcontrollers & Processors (MCU / MPU / DSP)

TI MSP430F5631IZQWR 16-bit MCU, 20MHz, 192KB Flash, USB, Obsolete

MPNMSP430F5631IZQWR
Obsolete

Texas Instruments MSP430F5xx series 16-bit MCU, MSP430 CPUXV2 core, 20MHz, 192KB Flash, 18KB RAM, USB 2.0, I²C/SPI/UART, 74 I/O, 1.8V–3.6V, -40 to 85°C, 113-BGA Microstar Junior 7x7.

Texas Instruments MSP430F5631IZQWR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

MSP430F5631IZQWR specifications
ParameterValue
SeriesMSP430F5xx
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed20MHz
PackageTape & Reel (TR)
RAM size18K x 8
Core size16-Bit
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityI²C, IrDA, LINbus, SCI, SPI, UART/USART, USB
Number of i (O)74
Core processorMSP430 CPUXV2
Case113-VFBGA
Program memory size192KB (192K x 8)

Product details

USB connectivity and peripheral set

The MSP430F5631IZQWR: On-chip peripherals include a brown-out reset, power-on reset, DMA controller, PWM timer, and watchdog timer — enough to handle real-time control loops without an external supervisor IC.

20 MHz core and memory sizing

The 20 MHz CPU handles USB packet processing and sensor polling. The 192 KB Flash and 18 KB RAM support a USB stack and control algorithm.

The 113-ball BGA Microstar Junior (7x7 mm) requires controlled reflow and X-ray inspection. The 74 I/O break out to outer balls; inner balls carry supply and ground.

Frequently asked questions

What is the replacement for MSP430F5631IZQWR?

TI does not list a single direct pin-compatible replacement for this specific ordering code. For new designs, migrate to a current MSP430F5xx or MSP430F6xx device with USB and comparable Flash/RAM — verify the package and ball-out against the 113-BGA Microstar Junior footprint.

Does MSP430F5631IZQWR have built-in USB?

Yes, it integrates a full-speed USB 2.0 module, along with I²C, SPI, UART, IrDA, and LIN interfaces — no external PHY required.

Where can I buy MSP430F5631IZQWR?

This obsolete part is sourced through independent distribution and surplus channels. Submit an RFQ for current availability and pricing — stock and lead time are confirmed at quote time.

What is the pinout of MSP430F5631IZQWR?

The pinout is defined in the TI MSP430F5631 datasheet for the 113-BGA Microstar Junior package. The 74 I/O are arranged on the outer ball rows; inner balls carry Vcc, Vss, and decoupling. Refer to the official datasheet for the ball-map table.

What is MSP430F5631IZQWR's listed speed?

The core processor runs at 20 MHz.