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Texas Instruments MSP430G2132IPW20
- Part No.:
- MSP430G2132IPW20
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2132IPW20.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,237
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Product details
Overview
MSP430G2132IPW20 from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller in 20-pin TSSOP package, featuring 1 kB Flash, 128 B RAM, 1-channel 10-bit ADC with internal reference, 1× Timer_A with three capture/compare registers, USI (SPI/I²C), and capacitive-touch I/O capability. It targets battery-powered sensor nodes and portable measurement systems requiring sub-1µs wake-up and <0.1 µA off-mode current.
For engineers reviewing the MSP430G2132IPW20 datasheet, MSP430G2132IPW20 pinout, MSP430G2132IPW20 application, or MSP430G2132IPW20 equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options - all grounded in TI's SLAS723H datasheet and functional block diagrams.
Technical Context
The MSP430G2132IPW20 implements a 16-bit CPU with seven addressing modes and 51-instruction set, executing register-to-register operations in one CPU cycle. Its clock system integrates DCO (calibrated at 1/8/12/16 MHz), LF oscillator, and 32-kHz crystal support - enabling flexible low-power timing across LPM0–LPM4 modes.
Peripherals include a single 10-bit SAR ADC with sample-and-hold, autoscan disabled (1-channel only), internal 1.5 V/2.5 V reference, and dedicated ADC10CLK output; USI supports master/slave SPI and I²C with programmable clock polarity/phase; Timer_A3 provides three CC registers for PWM, capture, and interval timing with interrupt-driven TAIV vectoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers; 62.5-ns instruction cycle at 16 MHz enables deterministic real-time control. |
| Memory | 1 kB Flash (512-byte segments), 128 B RAM; supports in-system programming via Spy-Bi-Wire without external voltage. |
| ADC10 | 10-bit SAR converter, 1 channel, 200 ksps max; internal reference (1.5 V/2.5 V) eliminates external components for basic sensing. |
| Power Modes | Active mode: 220 µA @ 1 MHz/2.2 V; LPM4 (RAM retention): 0.1 µA; ultra-fast wake-up <1 µs from standby. |
| USI Interface | Universal Serial Interface supporting SPI (3-wire/4-wire) and I²C (7-bit address); no dedicated hardware UART - requires bit-banging for asynchronous protocols. |
| Capacitive Touch | Up to 16 I/O pins support pin-oscillator-based capacitive touch; P1.x pins enabled via PinOsc module for low-cost human-interface detection. |
| Clock Sources | Digital Controlled Oscillator (DCO) with four factory-calibrated frequencies (1/8/12/16 MHz); plus 32-kHz crystal input (XIN/XOUT) and internal VLO. |
Pinout & Package
Package: 20-pin TSSOP (PW), 0.65 mm pitch, body size 6.5 × 4.4 mm. Thermal pad not present. RoHS-compliant, moisture sensitivity level MSL-3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, DVCC | Supply voltage | Digital core supply (1.8–3.6 V); decoupling capacitor required near pin for stable operation. |
| 2, P1.0/TA0CLK/ACLK/A0 | Multi-function I/O | Primary timer clock input (TA0CLK), auxiliary clock output (ACLK), or ADC input A0 - function selected via port control registers. |
| 5, P1.3/ADC10CLK/VREF-/VEREF- | ADC reference & clock | ADC conversion clock output; negative reference input (VREF-/VEREF-) - critical for ratiometric measurements. |
| 6, P1.4/TA0.2/SMCLK/A4/VREF+/VEREF+/TCK | Multi-function I/O | Timer_A compare output, SMCLK output, ADC input A4, positive reference input, or JTAG test clock - mode controlled by P1SEL/P1DIR. |
| 16, RST/NMI/SBWTDIO | Reset & debug I/O | Active-low reset, non-maskable interrupt, and Spy-Bi-Wire data I/O - shared pin enables programming and debugging over 2-wire interface. |
| 17, TEST/SBWTCK | Debug clock | JTAG/Spy-Bi-Wire test clock input; connects to fuse protection circuit - must be held high during normal operation. |
| 19, XIN/P2.6/TA0.1 | Clock input & I/O | Crystal oscillator input (XIN), general-purpose I/O (P2.6), or Timer_A compare output (TA0.1) - crystal load capacitance defined in layout guidelines. |
| 20, DVSS | Digital ground | Digital ground reference; separate from AVSS - requires star grounding or split-plane design for ADC accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA off-mode current with RAM retention enables >10-year battery life in coin-cell-powered sensors. |
| Integrated ADC with internal reference | 10-bit resolution, 200 ksps sampling, and selectable 1.5 V/2.5 V reference reduce BOM count and PCB area for analog front-end. |
| Spy-Bi-Wire debug interface | 2-pin (RST/SBWTCK) in-circuit programming and emulation eliminates need for full 4-pin JTAG header - saves board space and cost. |
| Capacitive-touch I/O | P1.x pins support pin-oscillator method for self-capacitance measurement - enables button/slider implementation without external ICs. |
| Factory-calibrated DCO | Four DCO frequencies (1/8/12/16 MHz) stored in info memory segment A - allows accurate timing without external crystal in cost-sensitive designs. |
Applications
| Smart Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via SPI to BLE MCU every 30 seconds. IC Role / Device Role / Timing Role: Primary controller managing ADC sampling, low-power sleep scheduling, and SPI communication handshake. Use Value: 0.1 µA LPM4 current extends CR2032 battery life beyond 3 years; integrated 10-bit ADC eliminates external signal conditioning. |
Use Scenario: Wearable pulse oximeter using capacitive-touch electrodes to detect finger placement before optical measurement. IC Role / Device Role / Timing Role: Front-end signal conditioner and touch-detection engine, triggering main processor only on valid user contact. Use Value: Pin-oscillator capacitive sensing reduces component count; sub-1 µs wake-up ensures immediate response to touch event. |
| Industrial Control Panel | Energy Harvesting Node |
Use Scenario: DIN-rail mounted HVAC controller with rotary encoder interface and local LED status indicators. IC Role / Device Role / Timing Role: Local UI manager handling encoder debouncing, LED PWM dimming, and watchdog supervision. Use Value: Timer_A3's three capture/compare registers drive independent LED PWM channels; USI handles encoder SPI interface. |
Use Scenario: Solar-powered soil moisture sensor waking every 2 hours to sample ADC and transmit via LoRa. IC Role / Device Role / Timing Role: Power-aware system orchestrator managing energy harvesting charge state, ADC trigger, and radio enable timing. Use Value: Brownout detector prevents erratic behavior during low-light conditions; LPM4 + RAM retention preserves state between harvest cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2232IPW20 | 256 B RAM, 2-channel ADC, same package and pinout | Supports dual-sensor inputs (e.g., temp + humidity) without external mux | Select when additional RAM or second ADC channel is required; software-compatible with MSP430G2132IPW20. |
| MSP430G2102IPW20 | No ADC10 module; identical Flash/RAM/power specs and pinout | Used in purely digital control tasks (e.g., LED driver, logic sequencer) where analog sensing is unnecessary | Choose for lowest-cost variant when ADC functionality is omitted - reduces BOM and simplifies firmware. |
Compared with MSP430G2232IPW20, the MSP430G2132IPW20 trades ADC channel count and RAM for lower unit cost and reduced firmware complexity; versus MSP430G2102IPW20, it adds essential analog sensing capability while maintaining identical power profile and footprint.
Availability
MSP430G2132IPW20 is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, industrial control panels, and energy harvesting nodes requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2132IPW20 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with decades of microcontroller innovation.
The MSP430G2xx family was designed for ultra-low-power portable measurement and sensing applications - prioritizing nanowatt operation, integrated peripherals, and rapid wake-up to extend battery life in compact devices.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2132IPW20?
The MSP430G2132IPW20 supports a maximum ADC10 sampling rate of 200 ksps. This is achievable with internal reference and ADC10CLK sourced from the DCO or SMCLK. The actual sustained rate depends on conversion mode (single vs. repeat), reference selection, and software overhead - but the hardware limit remains 200 ksps per the SLAS723H datasheet.
Does the MSP430G2132IPW20 support hardware UART communication?
No, the MSP430G2132IPW20 does not include a hardware UART peripheral. It features a Universal Serial Interface (USI) that supports SPI and I²C protocols only. Asynchronous serial (UART) must be implemented in firmware using timer-generated bit timing - confirmed by absence of UCAx or UCSx registers in the peripheral map and functional block diagram.
What is the purpose of the TEST/SBWTCK pin on the MSP430G2132IPW20?
The TEST/SBWTCK pin serves as the Spy-Bi-Wire test clock input during programming and debugging. It also connects to the device protection fuse - holding this pin high during normal operation prevents accidental fuse blowing. TI documentation explicitly states TEST must be tied high externally unless actively used for programming.
Can the MSP430G2132IPW20 operate from a 32.768-kHz crystal?
Yes, the MSP430G2132IPW20 supports 32.768-kHz crystal operation via XIN (pin 19) and XOUT (pin 18). The crystal connects directly to these pins, and the basic clock module configures ACLK from the LFXT1 oscillator - enabling precise real-time clocking and ultra-low-power LPM3 operation with ACLK active.
How many I/O pins on the MSP430G2132IPW20 support capacitive touch sensing?
All eight P1.x pins (P1.0–P1.7) on the MSP430G2132IPW20 support capacitive touch sensing via the integrated pin-oscillator module. This is confirmed in the "Features" section and functional block diagram - no P2.x pins are listed for capacitive touch in the G2x32 series, and Table 1 shows P1.x as the designated touch-enabled port.
MSP430G2132IPW20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430G2xx
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, SPI, USI
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 1KB (1K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2132IPW20 FAQ
1.How can I place an order for MSP430G2132IPW20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2132IPW20 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MSP430G2132IPW20 reliable?
The price and inventory of MSP430G2132IPW20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2132IPW20 is usually 5 days.
3.What payment methods are accepted for MSP430G2132IPW20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2132IPW20 transactions.
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MSP430G2132IPW20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2132IPW20 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MSP430G2132IPW20?
For technical support, including MSP430G2132IPW20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2132IPW20 requirements.
6.How does Aetrix verify that MSP430G2132IPW20 is sourced from the original manufacturer or authorized distributors?
All MSP430G2132IPW20 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MSP430G2132IPW20 meets industry standards.
7.What is the process for return or replacement of MSP430G2132IPW20?
All MSP430G2132IPW20 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2132IPW20, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MSP430G2132IPW20 part is unused and in its original packaging.
Return procedure for MSP430G2132IPW20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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