# MSP430F67791IPZR

**Texas Instruments** · Microcontrollers (MCU/MPU/SOC) · LQFP-100(14x14)

MSP430F67791IPZR from Texas Instruments, in a LQFP-100(14x14). 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 | SD0P0 | input | SD24_B positive analog input for converter 0 differential pair input. |
| 2 | SD0N0 | input | SD24_B negative analog input for converter 0 differential pair input. |
| 3 | SD1P0 | input | SD24_B positive analog input for converter 1 differential pair input. |
| 4 | SD1N0 | input | SD24_B negative analog input for converter 1 differential pair input. |
| 5 | SD2P0 | input | SD24_B positive analog input for converter 2 differential pair input. |
| 6 | SD2N0 | input | SD24_B negative analog input for converter 2 differential pair input. |
| 7 | SD3P0 | input | SD24_B positive analog input for converter 3 differential pair input. |
| 8 | SD3N0 | input | SD24_B negative analog input for converter 3 differential pair input. |
| 9 | VASYS2 | power_in | Analog power supply selected between AVCC, AUXVCC1, AUXVCC2 with recommended capacitor CVSYS. |
| 10 | AVSS2 | power_in | Analog ground supply. |
| 11 | VREF | power_in | SD24_B external reference voltage input with 1.4V to 2.0V typical range. |
| 12 | SD4P0 | input | SD24_B positive analog input for converter 4 differential pair input (not available on F674x1 devices). |
| 13 | SD4N0 | input | SD24_B negative analog input for converter 4 differential pair input (not available on F674x1 devices). |
| 14 | SD5P0 | input | SD24_B positive analog input for converter 5 differential pair input (not available on F674x1 devices). |
| 15 | SD5N0 | input | SD24_B negative analog input for converter 5 differential pair input (not available on F674x1 devices). |
| 16 | SD6P0 | input | SD24_B positive analog input for converter 6 differential pair input (not available on F676x1 and F674x1 devices). |
| 17 | SD6N0 | input | SD24_B negative analog input for converter 6 differential pair input (not available on F676x1 and F674x1 devices). |
| 18 | AVSS1 | power_in | Analog ground supply. |
| 19 | AVCC | power_in | Analog power supply for ADC and reference circuits. |
| 20 | VASYS1 | power_in | Analog power supply selected between AVCC, AUXVCC1, AUXVCC2 with recommended capacitor CVSYS. |
| 21 | AUXVCC2 | power_in | Auxiliary power supply AUXVCC2 for system operation during main supply failure. |
| 22 | AUXVCC1 | power_in | Auxiliary power supply AUXVCC1 for system operation during main supply failure. |
| 23 | VDSYS1 | power_in | Digital power supply selected between DVCC, AUXVCC1, AUXVCC2; must be connected externally for proper device operation. |
| 24 | DVCC | power_in | Digital power supply for core and I/O logic circuits. |
| 25 | DVSS1 | power_in | Digital ground supply. |
| 26 | VCORE | power_in | Regulated core power supply for internal use only with recommended capacitor CVCORE = 470 nF. |
| 27 | XIN | bidirectional | Crystal oscillator input terminal for XT1 low-frequency oscillator with 32.768-kHz watch crystal. |
| 28 | XOUT | bidirectional | Crystal oscillator output terminal for XT1 low-frequency oscillator with 32.768-kHz watch crystal. |
| 29 | AUXVCC3 | power_in | Auxiliary power supply AUXVCC3 for backup subsystem including RTC operation. |
| 30 | RTCCAP1 | input | External time capture pin 1 for RTC_C module supporting tamper detection and edge triggering. |
| 31 | RTCCAP0 | input | External time capture pin 0 for RTC_C module supporting tamper detection and edge triggering. |
| 32 | P1.5/SMCLK/CB0/A5 | bidirectional | General-purpose digital I/O with port interrupt, SMCLK clock output, Comparator_B input CB0, and analog input A5 for 10-bit ADC. |
| 33 | P1.4/MCLK/CB1/A4 | bidirectional | General-purpose digital I/O with port interrupt, MCLK clock output, Comparator_B input CB1, and analog input A4 for 10-bit ADC. |
| 34 | P1.3/ADC10CLK/A3 | bidirectional | General-purpose digital I/O with port interrupt, ADC10_A clock output, and analog input A3 for 10-bit ADC; enable internal pulldown before using analog function. |
| 35 | P1.2/ACLK/A2 | bidirectional | General-purpose digital I/O with port interrupt, ACLK clock output, and analog input A2 for 10-bit ADC. |
| 36 | P1.1/TA2.1/CBOUT/VeREF+/A1 | bidirectional | General-purpose digital I/O with port interrupt, Timer TA2 CCR1 capture/compare, Comparator_B output, positive reference voltage terminal for ADC, and analog input A1. |
| 37 | P1.0/TA1.1/VeREF-/A0 | bidirectional | General-purpose digital I/O with port interrupt, Timer TA1 CCR1 capture/compare, negative reference voltage terminal for ADC, and analog input A0. |
| 38 | COM0 | output | LCD common output COM0 for LCD backplane drive in LCD_C module. |
| 39 | COM1 | output | LCD common output COM1 for LCD backplane drive in LCD_C module. |
| 40 | P1.6/COM2 | bidirectional | General-purpose digital I/O with port interrupt and LCD common output COM2 for LCD backplane. |
| 41 | P1.7/COM3 | bidirectional | General-purpose digital I/O with port interrupt and LCD common output COM3 for LCD backplane. |
| 42 | P2.0/PM_TA0.0/BSL_TX/COM4 | bidirectional | General-purpose digital I/O with port interrupt and mappable secondary function, Timer TA0 CCR0, bootloader transmit, LCD common output COM4. |
| 43 | P2.1/PM_TA0.1/BSL_RX/COM5 | bidirectional | General-purpose digital I/O with port interrupt and mappable secondary function, Timer TA0 CCR1, bootloader receive, LCD common output COM5. |
| 44 | P2.2/PM_TA0.2/COM6 | bidirectional | General-purpose digital I/O with port interrupt and mappable secondary function, Timer TA0 CCR2, LCD common output COM6. |
| 45 | P2.3/PM_TA1.0/COM7 | bidirectional | General-purpose digital I/O with port interrupt and mappable secondary function, Timer TA1 CCR0, LCD common output COM7. |
| 46 | LCDCAP/R33 | bidirectional | LCD capacitor connection pin and input/output port of most positive analog LCD voltage V1; must connect to DVSS if not used. |
| 47 | P2.4/PM_TA2.0/R23 | bidirectional | General-purpose digital I/O with port interrupt and mappable secondary function, Timer TA2 CCR0, and input/output port for LCD voltage V2. |
| 48 | P2.5/PM_UCB0SOMI/PM_UCB0SCL/LCDREF/R13 | bidirectional | General-purpose digital I/O with port interrupt and mappable secondary function, eUSCI_B0 SPI/I2C, external LCD reference voltage input, LCD voltage V3 or V4. |
| 49 | P2.6/PM_UCB0SIMO/PM_UCB0SDA/R03 | bidirectional | General-purpose digital I/O with port interrupt and mappable secondary function, eUSCI_B0 SPI/I2C data, LCD voltage V5 output. |
| 50 | P2.7/PM_UCB0CLK/CB2 | bidirectional | General-purpose digital I/O with port interrupt and mappable secondary function, eUSCI_B0 clock, Comparator_B input CB2. |
| 51 | P3.0/PM_UCA0RXD/PM_UCA0SOMI | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_A0 UART receive data or SPI slave out master in. |
| 52 | P3.1/PM_UCA0TXD/PM_UCA0SIMO/S39 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_A0 UART transmit data or SPI slave in master out, and LCD segment output S39. |
| 53 | P3.2/PM_UCA0CLK/S38 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_A0 clock input/output, and LCD segment output S38. |
| 54 | P3.3/PM_UCA1CLK/S37 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_A1 clock input/output, and LCD segment output S37. |
| 55 | P3.4/PM_UCA1RXD/PM_UCA1SOMI/S36 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_A1 UART receive or SPI slave out master in, and LCD segment output S36. |
| 56 | P3.5/PM_UCA1TXD/PM_UCA1SIMO/S35 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_A1 UART transmit or SPI slave in master out, and LCD segment output S35. |
| 57 | P3.6/PM_UCA2RXD/PM_UCA2SOMI/S34 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_A2 UART receive or SPI slave out master in, and LCD segment output S34. |
| 58 | P3.7/PM_UCA2TXD/PM_UCA2SIMO/S33 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_A2 UART transmit or SPI slave in master out, and LCD segment output S33. |
| 59 | P4.0/PM_UCA2CLK/S32 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_A2 clock input/output, and LCD segment output S32. |
| 60 | P4.1/PM_UCA3RXD/PM_UCA3SOMI/S31 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_A3 UART receive or SPI slave out master in, and LCD segment output S31. |
| 61 | P4.2/PM_UCA3TXD/PM_UCA3SIMO/S30 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_A3 UART transmit or SPI slave in master out, and LCD segment output S30. |
| 62 | P4.3/PM_UCA3CLK/S29 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_A3 clock input/output, and LCD segment output S29. |
| 63 | P4.4/PM_UCB1SOMI/PM_UCB1SCL/S28 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_B1 SPI/I2C, and LCD segment output S28. |
| 64 | P4.5/PM_UCB1SIMO/PM_UCB1SDA/S27 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_B1 SPI/I2C data, and LCD segment output S27. |
| 65 | P4.6/PM_UCB1CLK/S26 | bidirectional | General-purpose digital I/O with mappable secondary function, eUSCI_B1 clock input/output, and LCD segment output S26. |
| 66 | P4.7/PM_TA3.0/S25 | bidirectional | General-purpose digital I/O with mappable secondary function, Timer TA3 CCR0 capture/compare, and LCD segment output S25. |
| 67 | P5.0/SDCLK/S24 | bidirectional | General-purpose digital I/O, SD24_B bit stream clock input/output, and LCD segment output S24. |
| 68 | P5.1/PM_SD0DIO/S23 | bidirectional | General-purpose digital I/O with default mapping to SD24_B converter 0 bit stream data, and LCD segment output S23. |
| 69 | P5.2/PM_SD1DIO/S22 | bidirectional | General-purpose digital I/O with default mapping to SD24_B converter 1 bit stream data, and LCD segment output S22. |
| 70 | P5.3/PM_SD2DIO/S21 | bidirectional | General-purpose digital I/O with default mapping to SD24_B converter 2 bit stream data, and LCD segment output S21. |
| 71 | P5.4/PM_SD3DIO/S20 | bidirectional | General-purpose digital I/O with default mapping to SD24_B converter 3 bit stream data, and LCD segment output S20. |
| 72 | P5.5/PM_SD4DIO/S19 | bidirectional | General-purpose digital I/O with default mapping to SD24_B converter 4 bit stream data (not available on F674x1), and LCD segment output S19. |
| 73 | P5.6/PM_SD5DIO/S18 | bidirectional | General-purpose digital I/O with default mapping to SD24_B converter 5 bit stream data (not available on F674x1), and LCD segment output S18. |
| 74 | P5.7/PM_SD6DIO/S17 | bidirectional | General-purpose digital I/O with default mapping to SD24_B converter 6 bit stream data (not available on F676x1 and F674x1), and LCD segment output S17. |
| 75 | VDSYS2 | power_in | Digital power supply for I/Os; must be connected externally for proper device operation. |
| 76 | DVSS2 | power_in | Digital ground supply. |
| 77 | P6.0/S16 | bidirectional | General-purpose digital I/O and LCD segment output S16. |
| 78 | P6.1/S15 | bidirectional | General-purpose digital I/O and LCD segment output S15. |
| 79 | P6.2/S14 | bidirectional | General-purpose digital I/O and LCD segment output S14. |
| 80 | P6.3/S13 | bidirectional | General-purpose digital I/O and LCD segment output S13. |
| 81 | P6.4/S12 | bidirectional | General-purpose digital I/O and LCD segment output S12. |
| 82 | P6.5/S11 | bidirectional | General-purpose digital I/O and LCD segment output S11. |
| 83 | P6.6/S10 | bidirectional | General-purpose digital I/O and LCD segment output S10. |
| 84 | P6.7/S9 | bidirectional | General-purpose digital I/O and LCD segment output S9. |
| 85 | P7.0/S8 | bidirectional | General-purpose digital I/O and LCD segment output S8. |
| 86 | P7.1/S7 | bidirectional | General-purpose digital I/O and LCD segment output S7. |
| 87 | P7.2/S6 | bidirectional | General-purpose digital I/O and LCD segment output S6. |
| 88 | P7.3/S5 | bidirectional | General-purpose digital I/O and LCD segment output S5. |
| 89 | P7.4/S4 | bidirectional | General-purpose digital I/O and LCD segment output S4. |
| 90 | P7.5/S3 | bidirectional | General-purpose digital I/O and LCD segment output S3. |
| 91 | P7.6/S2 | bidirectional | General-purpose digital I/O and LCD segment output S2. |
| 92 | P7.7/S1 | bidirectional | General-purpose digital I/O and LCD segment output S1. |
| 93 | P8.0/S0 | bidirectional | General-purpose digital I/O and LCD segment output S0. |
| 94 | P8.1/TACLK/RTCCLK/CB3 | bidirectional | General-purpose digital I/O, timer clock input TACLK for TA0-TA3, RTC clock output, and Comparator_B input CB3. |
| 95 | TEST/SBWTCK | input | Test mode pin to select digital I/O on JTAG pins or Spy-Bi-Wire clock input for programming. |
| 96 | PJ.0/TDO | bidirectional | General-purpose digital I/O and JTAG test data output. |
| 97 | PJ.1/TDI/TCLK | bidirectional | General-purpose digital I/O, JTAG test data input or test clock input. |
| 98 | PJ.2/TMS | bidirectional | General-purpose digital I/O and JTAG test mode select input. |
| 99 | PJ.3/TCK | bidirectional | General-purpose digital I/O and JTAG test clock input. |
| 100 | RST/NMI/SBWTDIO | bidirectional | Reset input active low with internal pullup, nonmaskable interrupt input, and Spy-Bi-Wire data input/output. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | LQFP-100(14x14) |
| Category | Embedded Processors & Controllers |
| Pins | 100 |

## CAD (KiCad official)

- Symbol: `MSP430F67791IPZR`
- Footprint: `Package_QFP:LQFP-100_14x14mm_P0.5mm`
- 3D model: LQFP-100(14x14) (KiCad packages3D, STEP)
- 3D model files: `msp430f67791ipzr-etched.step` / `msp430f67791ipzr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `msp430f67791ipzr.step` / `msp430f67791ipzr.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/msp430f67761) (179 pp, sha256 `22629dceb10bd286`, retrieved 2026-10-03, 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-4-5-20251001` (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/msp430f67791ipzr-datasheet.pdf)