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Texas Instruments MSP430F1121AIDWR — Microcontrollers & Processors (MCU / MPU / DSP)

TI MSP430F1121AIDWR 16-bit MCU, 8MHz, 4KB Flash, 20-SOIC

MPNMSP430F1121AIDWR
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Texas Instruments MSP430F1121AIDWR, 16-bit MSP430 CPU16 MCU, 8MHz, 4KB Flash, 256 x 8 RAM, 14 I/O, slope A/D, internal oscillator, 1.8V–3.6V supply, -40°C to 85°C, 20-SOIC.

$5.2700Ref. price · indicative, final on quote
Texas Instruments MSP430F1121AIDWR datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MSP430F1121AIDWR specifications
ParameterValue
SeriesMSP430x1xx
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed8MHz
PackageTape & Reel (TR); Cut Tape (CT)
RAM size256 x 8
Core size16-Bit
PeripheralsPOR, WDT
Number of i (O)14
Core processorMSP430 CPU16
Case20-SOIC (0.295\", 7.50mm Width)
Data convertersSlope A/D
Program memory size4KB (4K x 8 + 256B)

Product details

4 KB Flash and 256-byte RAM — sizing the firmware budget

It will not accommodate a full TCP/IP stack or large data buffers. If the application needs more code space or RAM, consider a pin-compatible upgrade within the MSP430x1xx family that offers higher Flash density and more SRAM while keeping the same 20-SOIC footprint.

The integrated slope A/D converter provides a low-component-count method for reading resistive sensors (thermistors, RTDs, strain gauges) without an external ADC. The POR (power-on reset) and WDT (watchdog timer) peripherals are included on-chip, reducing external supervisor IC requirements.

Frequently asked questions

What is the operating voltage of MSP430F1121AIDWR?

The supply voltage range is 1.8 V to 3.6 V, covering two-cell alkaline and 3.3 V regulated rails.

What is the pin-compatible alternative to MSP430F1121AIDWR?

There is no single official pin-compatible replacement listed. Look to active MSP430F1xx devices in the 20-SOIC package with similar peripheral sets; verify Flash and RAM sizes against your firmware requirements before substituting.

What is the core speed of MSP430F1121AIDWR?

The core runs at 8 MHz, which is the maximum clock frequency for this 16-bit MSP430 CPU16 device.