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Contents

README

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MSP430F2131TPWR

Texas Instruments · Microcontrollers (MCU/MPU/SOC) · TSSOP-20

MSP430F2131TPWR from Texas Instruments, in a TSSOP-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 TEST input Selects test mode for the JTAG pins on Port 1, and the device protection fuse is connected to this pin.
2 VCC power_in Supply voltage; the device operates over the low supply voltage range of 1.8 V to 3.6 V stated in the features.
3 P2.5/CA5 bidirectional General-purpose digital I/O pin, also the Comparator_A+ CA5 input.
4 VSS power_in Ground reference.
5 XOUT/P2.7/CA7 bidirectional Output terminal of the crystal oscillator, also general-purpose I/O and Comparator_A+ CA7 input; if used as an input, excess current flows until P2SEL.7 is cleared because of the oscillator output driver connection after reset.
6 XIN/P2.6/CA6 bidirectional Input terminal of the crystal oscillator, also general-purpose I/O and Comparator_A+ CA6 input.
7 RST/NMI input Reset or nonmaskable interrupt input.
8 P2.0/ACLK/CA2 bidirectional General-purpose digital I/O pin with ACLK output, also Comparator_A+ CA2 input.
9 P2.1/INCLK/CA3 bidirectional General-purpose digital I/O pin with Timer_A INCLK clock input, also Comparator_A+ CA3 input.
10 P2.2/CAOUT/TA0/CA4 bidirectional General-purpose digital I/O pin with Timer_A CCI0B input and BSL receive, also Comparator_A+ output and CA4 input.
11 P2.3/TA1/CA0 bidirectional General-purpose digital I/O pin with Timer_A compare Out1 output, also Comparator_A+ CA0 input.
12 P2.4/TA2/CA1 bidirectional General-purpose digital I/O pin with Timer_A compare Out2 output, also Comparator_A+ CA1 input.
13 P1.0/TACLK bidirectional General-purpose digital I/O pin, also Timer_A clock input TACLK.
14 P1.1/TA0 bidirectional General-purpose digital I/O pin with Timer_A CCI0A input and Out0 output, also BSL transmit.
15 P1.2/TA1 bidirectional General-purpose digital I/O pin with Timer_A CCI1A input and Out1 output.
16 P1.3/TA2 bidirectional General-purpose digital I/O pin with Timer_A CCI2A input and Out2 output.
17 P1.4/SMCLK/TCK bidirectional General-purpose digital I/O pin, also SMCLK signal output and test clock input TCK for device programming and test.
18 P1.5/TA0/TMS bidirectional General-purpose digital I/O pin, also Timer_A Out0 output and test mode select input TMS for device programming and test.
19 P1.6/TA1/TDI/TCLK bidirectional General-purpose digital I/O pin, also Timer_A Out1 output and JTAG test data input or test clock input for programming and test.
20 P1.7/TA2/TDO/TDI bidirectional General-purpose digital I/O pin, also Timer_A Out2 output and JTAG test data output or test data input; TDO or TDI is selected via JTAG instruction.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package TSSOP-20
Category Embedded Processors & Controllers
Pins 20

CAD (KiCad official)

  • Symbol: MSP430F2131TPWR
  • Footprint: Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm
  • 3D model: TSSOP-20 (KiCad packages3D, STEP)
  • 3D model files: msp430f2131tpwr-etched.step / msp430f2131tpwr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); msp430f2131tpwr.step / msp430f2131tpwr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (68 pp, sha256 0997b19db742fa9b, retrieved 2026-10-08, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF