# MSP430F1111AIPWR

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

MSP430F1111AIPWR 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 datasheet specifies a low supply voltage range of 1.8 V to 3.6 V. |
| 3 | P2.5/ROSC | bidirectional | General-purpose digital I/O pin, also the input for an external resistor that defines the DCO nominal frequency. |
| 4 | VSS | power_in | Ground reference. |
| 5 | XOUT | output | Output terminal of the crystal oscillator. |
| 6 | XIN | input | Input terminal of the crystal oscillator. |
| 7 | RST/NMI | input | Reset or nonmaskable interrupt input. |
| 8 | P2.0/ACLK | bidirectional | General-purpose digital I/O pin, also the ACLK output. |
| 9 | P2.1/INCLK | bidirectional | General-purpose digital I/O pin, also the Timer_A clock signal input at INCLK. |
| 10 | P2.2/CAOUT/TA0 | bidirectional | General-purpose digital I/O pin, also the Timer_A capture input CCI0B, comparator_A output, and BSL receive. |
| 11 | P2.3/CA0/TA1 | bidirectional | General-purpose digital I/O pin, also the Timer_A compare output Out1 and comparator_A input. |
| 12 | P2.4/CA1/TA2 | bidirectional | General-purpose digital I/O pin, also the Timer_A compare output Out2 and comparator_A input. |
| 13 | P1.0/TACLK | bidirectional | General-purpose digital I/O pin, also the Timer_A clock signal TACLK input. |
| 14 | P1.1/TA0 | bidirectional | General-purpose digital I/O pin, also the Timer_A capture input CCI0A, compare output Out0, and BSL transmit. |
| 15 | P1.2/TA1 | bidirectional | General-purpose digital I/O pin, also the Timer_A capture input CCI1A and compare output Out1. |
| 16 | P1.3/TA2 | bidirectional | General-purpose digital I/O pin, also the Timer_A capture input CCI2A and compare output Out2. |
| 17 | P1.4/SMCLK/TCK | bidirectional | General-purpose digital I/O pin, also the SMCLK signal output and the test clock input for device programming and test. |
| 18 | P1.5/TA0/TMS | bidirectional | General-purpose digital I/O pin, also the Timer_A compare output Out0 and the test mode select input for device programming and test. |
| 19 | P1.6/TA1/TDI/TCLK | bidirectional | General-purpose digital I/O pin, also the Timer_A compare output Out1 and the test data input or test clock input. |
| 20 | P1.7/TA2/TDO/TDI | bidirectional | General-purpose digital I/O pin, also the Timer_A compare output Out2 and the test data output or data input during programming; 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: `MSP430F1111AIPWR`
- Footprint: `Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm`
- 3D model: TSSOP-20 (KiCad packages3D, STEP)
- 3D model files: `msp430f1111aipwr-etched.step` / `msp430f1111aipwr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `msp430f1111aipwr.step` / `msp430f1111aipwr.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/msp430f1121a) (53 pp, sha256 `244782f6277a7608`, retrieved 2026-10-11, 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](docs/msp430f1111aipwr-datasheet.pdf)