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MSP430F2121IDWR
Public Made by Adomby adom
Texas Instruments Microcontrollers (MCU/MPU/SOC), SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMSP430F2121IDWR
Texas Instruments · Microcontrollers (MCU/MPU/SOC) · SOIC-20-300mil
MSP430F2121IDWR from Texas Instruments, in a SOIC-20-300mil. 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 | Test mode select input for JTAG pins and protection fuse control. |
| 2 | VCC | power_in | Supply voltage input (1.8 V to 3.6 V). |
| 3 | P2.5/CA5 | bidirectional | General-purpose I/O pin (P2.5) with Comparator_A+ input channel 5 (CA5). |
| 4 | VSS | power_in | Ground reference. |
| 5 | XOUT/P2.7/CA7 | bidirectional | Crystal oscillator output (XOUT), general-purpose I/O (P2.7), and Comparator_A+ input channel 7 (CA7). |
| 6 | XIN/P2.6/CA6 | bidirectional | Crystal oscillator input (XIN), general-purpose I/O (P2.6), and Comparator_A+ input channel 6 (CA6). |
| 7 | RST/NMI | input | Reset or nonmaskable interrupt input. |
| 8 | P2.0/ACLK/CA2 | bidirectional | General-purpose I/O pin (P2.0) with auxiliary clock output (ACLK) and Comparator_A+ input channel 2 (CA2). |
| 9 | P2.1/INCLK/CA3 | bidirectional | General-purpose I/O pin (P2.1) with Timer_A input clock (INCLK) and Comparator_A+ input channel 3 (CA3). |
| 10 | P2.2/CAOUT/TA0/CA4 | bidirectional | General-purpose I/O pin (P2.2) with Comparator_A+ output, Timer_A capture input (CCI0B), and Comparator_A+ input channel 4 (CA4). |
| 11 | P2.3/TA1/CA0 | bidirectional | General-purpose I/O pin (P2.3) with Timer_A output 1 (TA1) and Comparator_A+ input channel 0 (CA0). |
| 12 | P2.4/TA2/CA1 | bidirectional | General-purpose I/O pin (P2.4) with Timer_A output 2 (TA2) and Comparator_A+ input channel 1 (CA1). |
| 13 | P1.0/TACLK | bidirectional | General-purpose I/O pin (P1.0) with Timer_A clock signal input (TACLK). |
| 14 | P1.1/TA0 | bidirectional | General-purpose I/O pin (P1.1) with Timer_A capture input (CCI0A), output 0 (TA0), and bootstrap loader transmit function. |
| 15 | P1.2/TA1 | bidirectional | General-purpose I/O pin (P1.2) with Timer_A capture input (CCI1A) and output 1 (TA1). |
| 16 | P1.3/TA2 | bidirectional | General-purpose I/O pin (P1.3) with Timer_A capture input (CCI2A) and output 2 (TA2). |
| 17 | P1.4/SMCLK/TCK | bidirectional | General-purpose I/O pin (P1.4) with subsystem master clock output (SMCLK) and test clock input (TCK) for device programming. |
| 18 | P1.5/TA0/TMS | bidirectional | General-purpose I/O pin (P1.5) with Timer_A output 0 (TA0) and test mode select input (TMS) for device programming. |
| 19 | P1.6/TA1/TDI/TCLK | bidirectional | General-purpose I/O pin (P1.6) with Timer_A output 1 (TA1), test data input (TDI), and test clock input (TCLK) for device programming. |
| 20 | P1.7/TA2/TDO/TDI | bidirectional | General-purpose I/O pin (P1.7) with Timer_A output 2 (TA2), test data output (TDO), and test data input (TDI) for device programming. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOIC-20-300mil |
| Category | Embedded Processors & Controllers |
| Pins | 20 |
CAD (KiCad official)
- Symbol:
MSP430F2121IDWR - Footprint:
Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm - 3D model: SOIC-20-300mil (KiCad packages3D, STEP)
- 3D model files:
msp430f2121idwr-etched.step/msp430f2121idwr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);msp430f2121idwr.step/msp430f2121idwr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (68 pp, sha256
0997b19db742fa9b, retrieved 2026-10-01, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-4-5-20251001(text), consensusclaude-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).