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Texas Instruments MSP430F5509IZQER — Microcontrollers & Processors (MCU / MPU / DSP)

TI MSP430F5509IZQER 16-bit MCU, 25MHz, 24KB Flash, 80-BGA

MPNMSP430F5509IZQER
Obsolete

Texas Instruments MSP430F5509IZQER, 16-bit MSP430 CPUXV2, 25MHz, 24KB Flash, 6K x 8 RAM, USB 2.0, I²C, SPI, UART, 80-VFBGA BGA MICROSTAR JUNIOR (5x5), -40 to 85°C.

Texas Instruments MSP430F5509IZQER datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

MSP430F5509IZQER 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)
Speed25MHz
PackageTape & Reel (TR)
RAM size6K 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)47
Core processorMSP430 CPUXV2
Case80-VFBGA
Data convertersA/D 12x10b
Program memory size24KB (24K x 8)

Product details

What this MSP430F5509IZQER is — and what it drives

It packs 24 KB of program Flash, 6K x 8 of RAM, and a rich set of mixed-signal peripherals including a 12-channel 10-bit ADC, Brown-out Detect, POR, PWM, and a DMA controller.

25 MHz core — what the clock buys the design

At this clock rate, the Flash wait state insertion is minimal, so branch-heavy code does not stall the pipeline. The DMA offloads peripheral-to-memory transfers (ADC results, UART buffers) so the core stays free for protocol stack processing.

The MSP430F5509IZQER carries an official lifecycle status of Obsolete. TI has ended production; there is no last-time-buy window remaining. New designs should not target this order code. No direct factory support or PCN notifications apply to this code going forward.

80-BGA MICROSTAR JUNIOR — board-level reality

This part is supplied in an 80-VFBGA package (MICROSTAR JUNIOR, 5x5 mm body).

Frequently asked questions

Is MSP430F5509IZQER obsolete?

Yes. The MSP430F5509IZQER is officially listed as Obsolete by Texas Instruments. Production has ceased with no last-time-buy window. Existing stock is available through independent distribution.

Can MSP430F5509IZQER be used as a replacement for MSP430F5509IZQET?

The MSP430F5509IZQER and MSP430F5509IZQET share the same base product number and the same 80-BGA MICROSTAR JUNIOR package. The 'R' and 'T' suffixes typically indicate tape-and-reel packaging variants. They are functionally identical and can be used as drop-in replacements for each other if the reel/tape orientation for your pick-and-place feeder is verified.

What is MSP430F5509IZQER's listed speed?

The MSP430F5509IZQER is rated for a 25 MHz core clock on the MSP430 CPUXV2 processor.