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Texas Instruments MSP430F123IDW — Microcontrollers & Processors (MCU / MPU / DSP)

Texas Instruments MSP430F123IDW 16-bit MCU, 8 MHz

MPNMSP430F123IDW
Active

Texas Instruments MSP430x1xx MSP430F123IDW, 16-bit MSP430 CPU16 MCU, 8 MHz, 8 KB Flash, 256 x 8 RAM, SPI/UART, 22 I/O, 1.8 V – 3.6 V, -40°C to 85°C, 28-SOIC, Tube.

$7.7800Ref. price · indicative, final on quote
Texas Instruments MSP430F123IDW datasheet (PDF)
Packaging28-SOIC (0.295", 7.50mm Width)
RoHSROHS3 Compliant
SeriesMSP430x1xx
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

MSP430F123IDW 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
PackageTube
RAM size256 x 8
Core size16-Bit
PeripheralsPOR, PWM, WDT
ConnectivitySPI, UART/USART
Number of i (O)22
Core processorMSP430 CPU16
Case28-SOIC (0.295\", 7.50mm Width)
Data convertersSlope A/D
Program memory size8KB (8K x 8 + 256B)

Product details

8 MHz MSP430 — the low-power sweet spot for battery-backed sensing

It carries 8 KB of program Flash and 256 x 8 bytes of RAM — enough for a small control loop, a UART-based sensor readout, or a PWM-driven actuator sequence without needing external memory. Peripheral set includes POR, PWM, and WDT, plus SPI and UART/USART connectivity.

Memory budget — plan the firmware before you commit

8 KB of Flash and 256 bytes of RAM are tight. A full RTOS kernel or a large lookup table will not fit. The Flash is field-reprogrammable via the internal bootloader or an MSP-FET debug probe, but the RAM limits runtime data buffers to a few hundred bytes. If the application needs more headroom, the MSP430x1xx family offers pin-compatible parts with larger Flash and RAM — though the exact density options vary by suffix.

Frequently asked questions

Can MSP430F123IDW be programmed with MSP-FET?

Yes, the MSP430F123IDW uses the standard MSP430 Spy-Bi-Wire (SBW) debug interface, which is supported by the MSP-FET programmer/debugger. The internal Flash is field-programmable through the bootloader or directly via the SBW pins.