# MSP430FR4131IPMR

**Texas Instruments** · Microcontrollers (MCU/MPU/SOC) · LQFP-64(10x10)

MSP430FR4131IPMR from Texas Instruments, in a LQFP-64(10x10). 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 | P4.7/R13 | bidirectional | General-purpose I/O, also the input/output for the third most positive analog LCD voltage V4 (R13). |
| 2 | P4.6/R23 | bidirectional | General-purpose I/O, also the input/output for the second most positive analog LCD voltage V2 (R23). |
| 3 | P4.5/R33 | bidirectional | General-purpose I/O, also the input/output for the first most positive analog LCD voltage V1 (R33). |
| 4 | P4.4/LCDCAP1 | bidirectional | General-purpose I/O, also the LCD charge pump external port connected to LCDCAP0 by a 0.1-µF capacitor. |
| 5 | P4.3/LCDCAP0 | bidirectional | General-purpose I/O, also the LCD charge pump external port connected to LCDCAP1 by a 0.1-µF capacitor. |
| 6 | P4.2/XOUT | bidirectional | General-purpose I/O, also the output terminal for the 32-kHz crystal oscillator. |
| 7 | P4.1/XIN | bidirectional | General-purpose I/O, also the input terminal for the crystal oscillator; only a low-frequency (32 kHz) crystal is supported. |
| 8 | DVSS | power_in | Power ground (0 V supply reference, VSS). |
| 9 | DVCC | power_in | Power supply: 1.8 V to 3.6 V at DVCC, with a recommended 4.7 µF to 10 µF capacitor at DVCC. |
| 10 | RST/NMI/SBWTDIO | bidirectional | Active-low reset input, nonmaskable interrupt input, and Spy-Bi-Wire data input/output. |
| 11 | TEST/SBWTCK | input | Test mode pin, selected digital I/O on JTAG pins, and Spy-Bi-Wire input clock; it always has an internal pulldown enabled. |
| 12 | P4.0/TA1.1 | bidirectional | General-purpose I/O, also Timer TA1 CCR1 capture input CCI1A or compare output Out1 (TA1.1). |
| 13 | P8.3/TA1.2 | bidirectional | General-purpose I/O, also Timer TA1 CCR2 capture input CCI2A or compare output Out2 (TA1.2). |
| 14 | P8.2/TA1CLK | bidirectional | General-purpose I/O, also the timer clock input TACLK for TA1. |
| 15 | P8.1/ACLK/A9 | bidirectional | General-purpose I/O, also ACLK output and ADC analog input A9 (pin available only in the LQFP-64 package). |
| 16 | P8.0/SMCLK/A8 | bidirectional | General-purpose I/O, also SMCLK output and ADC analog input A8 (pin available only in the LQFP-64 package). |
| 17 | P1.7/TA0.1/TDO/A7 | bidirectional | General-purpose I/O, also Timer TA0 CCR1 capture/compare (TA0.1), JTAG test data output TDO, and ADC analog input A7; disable the pin interrupt during JTAG debug. |
| 18 | P1.6/TA0.2/TDI/TCLK/A6 | bidirectional | General-purpose I/O, also Timer TA0 CCR2 (TA0.2), JTAG test data input or test clock TDI/TCLK, and ADC analog input A6; disable the pin interrupt during JTAG debug. |
| 19 | P1.5/TA0CLK/TMS/A5 | bidirectional | General-purpose I/O, also the timer clock input TACLK for TA0, JTAG test mode select TMS, and ADC analog input A5. |
| 20 | P1.4/MCLK/TCK/A4/VREF+ | bidirectional | General-purpose I/O, also MCLK output, JTAG test clock TCK, ADC analog input A4, and positive reference voltage output VREF+ referenced to ground. |
| 21 | P1.3/UCA0STE/A3 | bidirectional | General-purpose I/O, also eUSCI_A0 SPI slave transmit enable (UCA0STE) and ADC analog input A3. |
| 22 | P1.2/UCA0CLK/A2 | bidirectional | General-purpose I/O, also eUSCI_A0 clock (UCA0CLK) and ADC analog input A2. |
| 23 | P1.1/UCA0RXD/UCA0SOMI/A1/Veref+ | bidirectional | General-purpose I/O, also eUSCI_A0 UART receive or SPI SOMI (UCA0RXD/UCA0SOMI), ADC analog input A1, and ADC positive reference Veref+. |
| 24 | P1.0/UCA0TXD/UCA0SIMO/A0/Veref- | bidirectional | General-purpose I/O, also eUSCI_A0 UART transmit or SPI SIMO (UCA0TXD/UCA0SIMO), ADC analog input A0, and ADC negative reference Veref-. |
| 25 | P5.7/L39 | bidirectional | General-purpose I/O, also LCD drive pin L39 (segment or common output). |
| 26 | P5.6/L38 | bidirectional | General-purpose I/O, also LCD drive pin L38 (segment or common output). |
| 27 | P5.5/L37 | bidirectional | General-purpose I/O, also LCD drive pin L37 (segment or common output). |
| 28 | P5.4/L36 | bidirectional | General-purpose I/O, also LCD drive pin L36 (segment or common output). |
| 29 | P5.3/UCB0SOMI/UCB0SCL/L35 | bidirectional | General-purpose I/O, also eUSCI_B0 SPI SOMI or I2C SCL, and LCD drive pin L35. |
| 30 | P5.2/UCB0SIMO/UCB0SDA/L34 | bidirectional | General-purpose I/O, also eUSCI_B0 SPI SIMO or I2C SDA, and LCD drive pin L34. |
| 31 | P5.1/UCB0CLK/L33 | bidirectional | General-purpose I/O, also eUSCI_B0 clock (UCB0CLK) and LCD drive pin L33. |
| 32 | P5.0/UCB0STE/L32 | bidirectional | General-purpose I/O, also eUSCI_B0 slave transmit enable (UCB0STE) and LCD drive pin L32. |
| 33 | P2.7/L31 | bidirectional | General-purpose I/O with interrupt capability, also LCD drive pin L31 (segment or common output). |
| 34 | P2.6/L30 | bidirectional | General-purpose I/O with interrupt capability, also LCD drive pin L30 (segment or common output). |
| 35 | P2.5/L29 | bidirectional | General-purpose I/O with interrupt capability, also LCD drive pin L29 (segment or common output). |
| 36 | P2.4/L28 | bidirectional | General-purpose I/O with interrupt capability, also LCD drive pin L28 (segment or common output). |
| 37 | P2.3/L27 | bidirectional | General-purpose I/O with interrupt capability, also LCD drive pin L27 (segment or common output). |
| 38 | P2.2/L26 | bidirectional | General-purpose I/O with interrupt capability, also LCD drive pin L26 (segment or common output). |
| 39 | P2.1/L25 | bidirectional | General-purpose I/O with interrupt capability, also LCD drive pin L25 (segment or common output). |
| 40 | P2.0/L24 | bidirectional | General-purpose I/O with interrupt capability, also LCD drive pin L24 (segment or common output). |
| 41 | P6.7/L23 | bidirectional | General-purpose I/O, also LCD drive pin L23 (segment or common output). |
| 42 | P6.6/L22 | bidirectional | General-purpose I/O, also LCD drive pin L22 (segment or common output). |
| 43 | P6.5/L21 | bidirectional | General-purpose I/O, also LCD drive pin L21 (segment or common output). |
| 44 | P6.4/L20 | bidirectional | General-purpose I/O, also LCD drive pin L20 (segment or common output). |
| 45 | P6.3/L19 | bidirectional | General-purpose I/O, also LCD drive pin L19 (segment or common output). |
| 46 | P6.2/L18 | bidirectional | General-purpose I/O, also LCD drive pin L18 (segment or common output). |
| 47 | P6.1/L17 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |
| 48 | P6.0/L16 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |
| 49 | P3.7/L15 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |
| 50 | P3.6/L14 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |
| 51 | P3.5/L13 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |
| 52 | P3.4/L12 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |
| 53 | P3.3/L11 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |
| 54 | P3.2/L10 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |
| 55 | P3.1/L9 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |
| 56 | P3.0/L8 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |
| 57 | P7.7/L7 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. Not bonded out in smaller packages, so initialize by software after reset for lowest leakage. |
| 58 | P7.6/L6 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. Not bonded out in smaller packages, so initialize by software after reset for lowest leakage. |
| 59 | P7.5/L5 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. Not bonded out in smaller packages, so initialize by software after reset for lowest leakage. |
| 60 | P7.4/L4 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. Not bonded out in smaller packages, so initialize by software after reset for lowest leakage. |
| 61 | P7.3/L3 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |
| 62 | P7.2/L2 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |
| 63 | P7.1/L1 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |
| 64 | P7.0/L0 | bidirectional | General-purpose I/O, also LCD drive pin; either segment or common output. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | LQFP-64(10x10) |
| Category | Embedded Processors & Controllers |
| Pins | 64 |

## CAD (KiCad official)

- Symbol: `MSP430FR4131IPMR`
- Footprint: `Package_QFP:LQFP-64_10x10mm_P0.5mm`
- 3D model: LQFP-64(10x10) (KiCad packages3D, STEP)
- 3D model files: `msp430fr4131ipmr-etched.step` / `msp430fr4131ipmr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `msp430fr4131ipmr.step` / `msp430fr4131ipmr.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/msp430fr4131) (110 pp, sha256 `47c6ce82c3083c42`, retrieved 2026-10-08, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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](docs/msp430fr4131ipmr-datasheet.pdf)