# MSP430FR6877IPNR

**Texas Instruments** · Microcontrollers (MCU/MPU/SOC) · LQFP-80(12x12)

MSP430FR6877IPNR from Texas Instruments, in a LQFP-80(12x12). 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 | P4.3/UCA0SOMI/UCA0RXD/UCB1STE | bidirectional | General-purpose digital I/O that also serves as USCI_A0 slave-out/master-in (SPI) or receive data (UART) and USCI_B1 slave transmit enable (SPI). |
| 2 | P1.4/UCB0CLK/UCA0STE/TA1.0/S3 | bidirectional | General-purpose digital I/O that also serves as USCI_B0 clock, USCI_A0 slave transmit enable, Timer_A TA1.0 capture/compare, and LCD segment S3. |
| 3 | P1.5/UCB0STE/UCA0CLK/TA0.0/S2 | bidirectional | General-purpose digital I/O that also serves as USCI_B0 slave transmit enable, USCI_A0 clock, Timer_A TA0.0 capture/compare, and LCD segment S2. |
| 4 | P1.6/UCB0SIMO/UCB0SDA/TA0.1/S1 | bidirectional | General-purpose digital I/O that also serves as USCI_B0 slave-in/master-out (SPI) or I2C data, Timer_A TA0.1 capture/compare, and LCD segment S1; it is BSLSDA on I2C-BSL devices only. |
| 5 | P1.7/UCB0SOMI/UCB0SCL/TA0.2/S0 | bidirectional | General-purpose digital I/O that also serves as USCI_B0 slave-out/master-in (SPI) or I2C clock, Timer_A TA0.2 capture/compare, and LCD segment S0; it is BSLSCL on I2C-BSL devices only. |
| 6 | R33/LCDCAP | bidirectional | Input/output port of the most positive analog LCD voltage (V1) and LCD capacitor connection; if unused it may be tied to DVSS or DVCC. |
| 7 | P6.0/R23 | bidirectional | General-purpose digital I/O that also serves as input/output port of the second most positive analog LCD voltage (V2). |
| 8 | P6.1/R13/LCDREF | bidirectional | General-purpose digital I/O that also serves as input/output port of the third most positive LCD voltage (V3 or V4) and external reference input for the regulated LCD voltage. |
| 9 | P6.2/COUT/R03 | bidirectional | General-purpose digital I/O that also serves as comparator output and input/output port of the lowest analog LCD voltage (V5). |
| 10 | P6.3/COM0 | bidirectional | General-purpose digital I/O that also serves as LCD common output COM0 for the LCD backplane. |
| 11 | P6.4/TB0.0/COM1/S36 | bidirectional | General-purpose digital I/O that also serves as Timer_B TB0.0 capture/compare, LCD common output COM1, and LCD segment S36. |
| 12 | P6.5/TB0.1/COM2/S35 | bidirectional | General-purpose digital I/O that also serves as Timer_B TB0.1 capture/compare, LCD common output COM2, and LCD segment S35. |
| 13 | P6.6/TB0.2/COM3/S34 | bidirectional | General-purpose digital I/O that also serves as Timer_B TB0.2 capture/compare, LCD common output COM3, and LCD segment S34. |
| 14 | P2.4/TB0.3/COM4/S33 | bidirectional | General-purpose digital I/O that also serves as Timer_B TB0.3 capture/compare, LCD common output COM4, and LCD segment S33. |
| 15 | P2.5/TB0.4/COM5/S32 | bidirectional | General-purpose digital I/O that also serves as Timer_B TB0.4 capture/compare, LCD common output COM5, and LCD segment S32. |
| 16 | P2.6/TB0.5/COM6/S31 | bidirectional | General-purpose digital I/O that also serves as Timer_B TB0.5 capture/compare, LCD common output COM6, and LCD segment S31. |
| 17 | P2.7/TB0.6/COM7/S30 | bidirectional | General-purpose digital I/O that also serves as Timer_B TB0.6 capture/compare, LCD common output COM7, and LCD segment S30. |
| 18 | P3.0/UCB1CLK/S29 | bidirectional | General-purpose digital I/O that also serves as USCI_B1 clock (SPI slave input or master output) and LCD segment S29. |
| 19 | P3.1/UCB1SIMO/UCB1SDA/S28 | bidirectional | General-purpose digital I/O that also serves as USCI_B1 slave-in/master-out (SPI) or I2C data and LCD segment S28. |
| 20 | P3.2/UCB1SOMI/UCB1SCL/S27 | bidirectional | General-purpose digital I/O that also serves as USCI_B1 slave-out/master-in (SPI) or I2C clock and LCD segment S27. |
| 21 | DVSS1 | power_in | Digital ground supply. |
| 22 | DVCC1 | power_in | Digital power supply. |
| 23 | TEST/SBWTCK | input | Test mode pin used to select digital I/O on the JTAG pins, and Spy-Bi-Wire input clock; it has an internal pulldown enabled. |
| 24 | RST/NMI/SBWTDIO | bidirectional | Reset input (active low), nonmaskable interrupt input, and Spy-Bi-Wire data input/output. |
| 25 | PJ.0/TDO/TB0OUTH/SMCLK/SRSCG1 | bidirectional | General-purpose digital I/O that also serves as JTAG test data output, Timer_B TB0OUTH high-impedance control, SMCLK output, and low-power debug CPU status bit SCG1. |
| 26 | PJ.1/TDI/TCLK/MCLK/SRSCG0 | bidirectional | General-purpose digital I/O that also serves as JTAG test data input or test clock, MCLK output, and low-power debug CPU status bit SCG0. |
| 27 | PJ.2/TMS/ACLK/SROSCOFF | bidirectional | General-purpose digital I/O that also serves as JTAG test mode select, ACLK output, and low-power debug CPU status bit OSCOFF. |
| 28 | PJ.3/TCK/COUT/SRCPUOFF | bidirectional | General-purpose digital I/O that also serves as JTAG test clock, comparator output, and low-power debug CPU status bit CPUOFF. |
| 29 | P6.7/TA0CLK/S26 | bidirectional | General-purpose digital I/O that also serves as Timer_A TA0 clock input (TA0CLK) and LCD segment S26. |
| 30 | P7.5/TA0.2/S25 | bidirectional | General-purpose digital I/O that also serves as Timer_A TA0.2 capture/compare and LCD segment S25. |
| 31 | P7.6/TA0.1/S24 | bidirectional | General-purpose digital I/O that also serves as Timer_A TA0.1 capture/compare and LCD segment S24. |
| 32 | P7.7/TA1.2/TB0OUTH/S23 | bidirectional | General-purpose digital I/O that also serves as Timer_A TA1.2 capture/compare, Timer_B TB0OUTH high-impedance control, and LCD segment S23. |
| 33 | P3.3/TA1.1/TB0CLK/S22 | bidirectional | General-purpose digital I/O that also serves as Timer_A TA1.1 capture/compare, Timer_B TB0 clock input (TB0CLK), and LCD segment S22. |
| 34 | P3.4/UCA1SIMO/UCA1TXD/TB0.0/S21 | bidirectional | General-purpose digital I/O that also serves as USCI_A1 slave-in/master-out (SPI) or transmit data (UART), Timer_B TB0.0 capture/compare, and LCD segment S21. |
| 35 | P3.5/UCA1SOMI/UCA1RXD/TB0.1/S20 | bidirectional | General-purpose digital I/O that also serves as USCI_A1 slave-out/master-in (SPI) or receive data (UART), Timer_B TB0.1 capture/compare, and LCD segment S20. |
| 36 | P3.6/UCA1CLK/TB0.2/S19 | bidirectional | General-purpose digital I/O that also serves as USCI_A1 clock (SPI), Timer_B TB0.2 capture/compare, and LCD segment S19. |
| 37 | P3.7/UCA1STE/TB0.3/S18 | bidirectional | General-purpose digital I/O that also serves as USCI_A1 slave transmit enable (SPI), Timer_B TB0.3 capture/compare, and LCD segment S18. |
| 38 | P2.3/UCA0STE/TB0OUTH/S17 | bidirectional | General-purpose digital I/O that also serves as USCI_A0 slave transmit enable (SPI), Timer_B TB0OUTH high-impedance control, and LCD segment S17. |
| 39 | P2.2/UCA0CLK/TB0.4/RTCCLK/S16 | bidirectional | General-purpose digital I/O that also serves as USCI_A0 clock (SPI), Timer_B TB0.4 capture/compare, RTC clock output for calibration, and LCD segment S16. |
| 40 | P2.1/UCA0SOMI/UCA0RXD/TB0.5/DMAE0/S15 | bidirectional | General-purpose digital I/O that also serves as USCI_A0 slave-out/master-in (SPI) or receive data (UART), BSL receive (UART BSL, i.e. BSLRX), Timer_B TB0.5 capture/compare, DMA external trigger, and LCD segment S15. |
| 41 | P2.0/UCA0SIMO/UCA0TXD/TB0.6/TB0CLK/S14 | bidirectional | General-purpose digital I/O that also serves as USCI_A0 slave-in/master-out (SPI) or transmit data (UART), BSL transmit (UART BSL, i.e. BSLTX), Timer_B TB0.6 capture/compare, Timer_B TB0 clock input, and LCD segment S14. |
| 42 | P7.0/TA0CLK/S13 | bidirectional | General-purpose digital I/O that also serves as Timer_A TA0 clock input (TA0CLK) and LCD segment S13. |
| 43 | P7.1/TA0.0/ACLK/S12 | bidirectional | General-purpose digital I/O that also serves as Timer_A TA0.0 capture/compare, ACLK output, and LCD segment S12. |
| 44 | P7.2/TA0.1/S11 | bidirectional | General-purpose digital I/O that also serves as Timer_A TA0.1 capture/compare and LCD segment S11. |
| 45 | P7.3/TA0.2/S10 | bidirectional | General-purpose digital I/O that also serves as Timer_A TA0.2 capture/compare and LCD segment S10. |
| 46 | DVSS2 | power_in | Digital ground supply. |
| 47 | DVCC2 | power_in | Digital power supply. |
| 48 | P1.3/TA1.2/A3/C3 | bidirectional | General-purpose digital I/O that also serves as Timer_A TA1.2 capture/compare, ADC analog input A3, and comparator input C3. |
| 49 | P1.2/TA1.1/TA0CLK/COUT/A2/C2 | bidirectional | General-purpose digital I/O that also serves as Timer_A TA1.1 capture/compare, Timer_A TA0 clock input, comparator output, ADC analog input A2, and comparator input C2. |
| 50 | P1.1/TA0.2/TA1CLK/COUT/A1/C1/VREF+/VeREF+ | bidirectional | General-purpose digital I/O that also serves as Timer_A TA0.2 capture/compare, Timer_A TA1 clock input, comparator output, ADC analog input A1, comparator input C1, and positive reference voltage output/input (VREF+/VeREF+). |
| 51 | P1.0/TA0.1/DMAE0/RTCCLK/A0/C0/VREF-/VeREF- | bidirectional | General-purpose digital I/O that also serves as Timer_A TA0.1 capture/compare, DMA external trigger, RTC clock output, ADC analog input A0, comparator input C0, and negative reference voltage output/input (VREF-/VeREF-). |
| 52 | P9.0/A8/C8 | bidirectional | General-purpose digital I/O that also serves as ADC analog input A8 and comparator input C8. |
| 53 | P9.1/A9/C9 | bidirectional | General-purpose digital I/O that also serves as ADC analog input A9 and comparator input C9. |
| 54 | P9.2/A10/C10 | bidirectional | General-purpose digital I/O that also serves as ADC analog input A10 and comparator input C10. |
| 55 | P9.3/A11/C11 | bidirectional | General-purpose digital I/O that also serves as ADC analog input A11 and comparator input C11. |
| 56 | P9.4/A12/C12 | bidirectional | General-purpose digital I/O that also serves as ADC analog input A12 and comparator input C12. |
| 57 | P9.5/A13/C13 | bidirectional | General-purpose digital I/O that also serves as ADC analog input A13 and comparator input C13. |
| 58 | P9.6/A14/C14 | bidirectional | General-purpose digital I/O that also serves as ADC analog input A14 and comparator input C14. |
| 59 | P9.7/A15/C15 | bidirectional | General-purpose digital I/O that also serves as ADC analog input A15 and comparator input C15. |
| 60 | DVCC4 | power_in | Digital power supply. |
| 61 | DVSS4 | power_in | Digital ground supply. |
| 62 | NC | unconnected | No connect. |
| 63 | NC | unconnected | No connect. |
| 64 | AVCC1 | power_in | Analog power supply. |
| 65 | AVSS3 | power_in | Analog ground supply. |
| 66 | PJ.7/HFXOUT | output | Output terminal of high-frequency crystal oscillator XT2 (general-purpose I/O when HFXT is not in crystal mode). |
| 67 | PJ.6/HFXIN | input | Input terminal for high-frequency crystal oscillator XT2 (general-purpose I/O when HFXT is not in crystal mode). |
| 68 | AVSS1 | power_in | Analog ground supply. |
| 69 | PJ.4/LFXIN | input | Input terminal for low-frequency crystal oscillator XT1 (general-purpose I/O when LFXT is not in crystal mode). |
| 70 | PJ.5/LFXOUT | output | Output terminal of low-frequency crystal oscillator XT1 (general-purpose I/O when LFXT is not in crystal mode). |
| 71 | AVSS2 | power_in | Analog ground supply. |
| 72 | P4.4/UCB1STE/TA1CLK/S9 | bidirectional | General-purpose digital I/O that also serves as USCI_B1 slave transmit enable (SPI), Timer_A TA1 clock input (TA1CLK), and LCD segment S9. |
| 73 | P4.5/UCB1CLK/TA1.0/S8 | bidirectional | General-purpose digital I/O that also serves as USCI_B1 clock (SPI), Timer_A TA1.0 capture/compare, and LCD segment S8. |
| 74 | P4.6/UCB1SIMO/UCB1SDA/TA1.1/S7 | bidirectional | General-purpose digital I/O that also serves as USCI_B1 slave-in/master-out (SPI) or I2C data, Timer_A TA1.1 capture/compare, and LCD segment S7. |
| 75 | P4.7/UCB1SOMI/UCB1SCL/TA1.2/S6 | bidirectional | General-purpose digital I/O that also serves as USCI_B1 slave-out/master-in (SPI) or I2C clock, Timer_A TA1.2 capture/compare, and LCD segment S6. |
| 76 | P4.0/UCB1SIMO/UCB1SDA/MCLK/S5 | bidirectional | General-purpose digital I/O that also serves as USCI_B1 slave-in/master-out (SPI) or I2C data, MCLK output, and LCD segment S5. |
| 77 | P4.1/UCB1SOMI/UCB1SCL/ACLK/S4 | bidirectional | General-purpose digital I/O that also serves as USCI_B1 slave-out/master-in (SPI) or I2C clock, ACLK output, and LCD segment S4. |
| 78 | DVSS3 | power_in | Digital ground supply. |
| 79 | DVCC3 | power_in | Digital power supply. |
| 80 | P4.2/UCA0SIMO/UCA0TXD/UCB1CLK | bidirectional | General-purpose digital I/O that also serves as USCI_A0 slave-in/master-out (SPI) or transmit data (UART), and USCI_B1 clock (SPI). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | LQFP-80(12x12) |
| Category | Embedded Processors & Controllers |
| Pins | 80 |

## CAD (KiCad official)

- Symbol: `MSP430FR6877IPNR`
- Footprint: `Package_QFP:LQFP-80_12x12mm_P0.5mm`
- 3D model: LQFP-80(12x12) (KiCad packages3D, STEP)
- 3D model files: `msp430fr6877ipnr-etched.step` / `msp430fr6877ipnr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `msp430fr6877ipnr.step` / `msp430fr6877ipnr.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/msp430fr6877) (162 pp, sha256 `fab813518e847947`, 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/msp430fr6877ipnr-datasheet.pdf)