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Texas Instruments MSP430G2112IPW20R
- Part No.:
- MSP430G2112IPW20R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2112IPW20R.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,175
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Product details
Overview
MSP430G2112IPW20R from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 20-pin TSSOP package, featuring 1 kB Flash, 128 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) for SPI/I²C, on-chip comparator, and eight programmable I/O pins - deployed in battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the MSP430G2112IPW20R datasheet, MSP430G2112IPW20R pinout, MSP430G2112IPW20R application, or MSP430G2112IPW20R equivalent, this page delivers verified electrical specs, validated pin functions, confirmed low-power operating modes, and real-world use context for rapid embedded system selection and integration.
Technical Context
The MSP430G2112IPW20R implements a 16-bit CPU with seven addressing modes and 51 instructions, integrated with a basic clock module supporting internal DCO (calibrated at 1/8/12/16 MHz), LF oscillator, and external crystal input. It uses Spy-Bi-Wire for programming and debugging, not full JTAG.
Its peripheral set excludes ADC10 (reserved for G2x52 series), but includes USI with hardware SPI/I²C support, Comparator_A+ with eight input channels, and five software-selectable low-power modes - LPM0 to LPM4 - enabling sub-µA standby current (0.5 µA) and sub-1 µs wake-up latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generators for optimized code efficiency |
| Flash / RAM | 1 kB Flash program memory and 128 B RAM - sufficient for compact firmware with minimal data buffering |
| Supply Voltage | 1.8 V to 3.6 V operation - compatible with single-cell Li-ion, alkaline, or coin-cell power sources |
| Low-Power Modes | Five configurable modes including LPM4 (0.1 µA off-mode with RAM retention) - extends battery life in intermittent-sensing applications |
| Timer Resource | One 16-bit Timer_A (TA0) with three capture/compare registers - supports PWM generation, input capture, and interval timing |
| Communication | Universal Serial Interface (USI) supporting master/slave SPI and I²C - enables direct connection to sensors, EEPROMs, and displays without external logic |
| Comparator | Comparator_A+ with eight selectable analog inputs and internal reference - used for threshold detection, battery monitoring, and slope ADC |
Pinout & Package
Package: 20-pin TSSOP (PW), 0.65 mm pitch, body size 6.5 × 4.4 mm, thermal pad optional. Pinout validated per TI SLAS722G Rev. May 2013, PW package top view.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, 15 | DVCC / AVCC / DVSS | Digital supply (DVCC), analog supply (AVCC), and ground (DVSS) - require separate decoupling near pins 1 & 16 for noise-sensitive analog functions |
| 2–9, 11–14, 17–20 | P1.x / P2.x I/O | Eight P1 pins (P1.0–P1.7) and eight P2 pins (P2.0–P2.7) - all individually configurable as digital I/O with pullup/pulldown enable and interrupt edge select |
| 10, 11 | RST/NMI/SBWTDIO, TEST/SBWTCK | Spy-Bi-Wire debug interface - enables in-system programming and real-time debugging using two pins only |
| 19, 18 | XIN/P2.6, XOUT/P2.7 | Crystal oscillator input/output - supports 32.768 kHz watch crystal for RTC or precision timing; P2.6/P2.7 double as TA0.1 timer outputs |
| 5, 6, 14 | P1.3, P1.4, P1.5 | USI pins (SDA/SDI, SCL/SDO, SCLK/TA0.0) - configure for I²C or SPI based on software control of USICTL0/1 registers |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | Active mode at 220 µA @ 1 MHz/2.2 V; standby at 0.5 µA - enables multi-year operation on CR2032 coin cell |
| Integrated analog comparator | Comparator_A+ with eight analog inputs and programmable hysteresis - eliminates need for external comparators in voltage-monitoring circuits |
| Capacitive-touch I/O capability | Pin-oscillator enable bits per P1 pin - allows up to eight self-capacitance touch buttons without external components |
| Calibrated internal DCO | Four factory-trimmed DCO frequencies (1/8/12/16 MHz) stored in info memory - ensures accurate timing without external crystal in cost-sensitive designs |
| Secure code protection | Programmable security fuse - prevents unauthorized read-out of Flash contents during production or field deployment |
Applications
| Smart Sensor Node | Portable Medical Device |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via I²C to MCU host or BLE module. IC Role / Device Role / Timing Role: Primary controller managing sensor polling, signal conditioning via comparator, and low-power scheduling. Use Value: Sub-µA LPM4 retention and fast wake-up allow >2-year battery life with 10-second sampling intervals. | Use Scenario: Handheld pulse oximeter requiring analog front-end supervision and LED drive timing. IC Role / Device Role / Timing Role: System supervisor monitoring battery voltage via Comparator_A+, generating precise LED timing with Timer_A PWM. Use Value: Integrated comparator eliminates discrete voltage monitor IC; calibrated DCO ensures consistent LED pulse width across units. |
| Industrial Control Panel | Energy-Harvesting IoT Endpoint |
Use Scenario: DIN-rail mounted status indicator with pushbutton inputs and LED feedback. IC Role / Device Role / Timing Role: Input scanner detecting button presses via P1/P2 interrupts and driving LEDs with Timer_A outputs. Use Value: Eight independent I/O pins with programmable pull resistors simplify PCB layout; no external debounce circuitry needed. | Use Scenario: Solar-powered environmental monitor harvesting microwatts and waking only on event. IC Role / Device Role / Timing Role: Energy manager triggering ADC-less sensing (comparator-based threshold detection) and initiating transmission on threshold breach. Use Value: 0.1 µA off-mode with RAM retention preserves state between harvest events; USI enables direct SPI connection to RF transceiver. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2212IPW20R | 2 kB Flash, 256 B RAM, same peripherals - adds memory headroom for larger firmware or data logging | Preferred where firmware complexity exceeds 1 kB or buffer requirements exceed 128 B RAM | Select when future feature expansion or bootloader space is required; identical pinout and code compatibility |
| MSP430G2102IPW20R | No USI module, no comparator, no Timer_A capture/compare - reduced peripheral set | Suitable only for pure GPIO/timing tasks without serial comms or analog monitoring | Choose only for lowest-cost, minimal-function implementations; not drop-in compatible due to missing USI and comparator registers |
Compared with MSP430G2212IPW20R, the MSP430G2112IPW20R trades memory capacity for lower cost and identical low-power behavior; versus MSP430G2102IPW20R, it adds essential USI and comparator functionality required for sensor interfacing - making it the optimal balance for entry-level mixed-signal embedded control.
Availability
MSP430G2112IPW20R is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical devices, industrial control panels, and energy-harvesting IoT endpoints requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2112IPW20R 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 delivering analog, embedded processing, and connectivity solutions with emphasis on energy efficiency and system integration.
The MSP430G2xx family targets ultra-low-power embedded applications - designed specifically for battery-operated measurement systems, portable instrumentation, and energy-constrained IoT endpoints where milliamp-hours define product lifetime.
FAQ
What is the maximum operating frequency of the MSP430G2112IPW20R?
The MSP430G2112IPW20R supports a maximum MCLK frequency of 16 MHz, achieved using the factory-calibrated internal digitally controlled oscillator (DCO). This frequency is accessible via software configuration of DCOCTL and BCSCTL1/2 registers and does not require an external crystal. The device maintains full functionality - including USI, Timer_A, and comparator - at all DCO settings from 1 MHz to 16 MHz, as verified in TI SLAS722G Section 6.1.
Does the MSP430G2112IPW20R include an analog-to-digital converter (ADC)?
No, the MSP430G2112IPW20R does not include the ADC10 module. ADC functionality is exclusive to the MSP430G2x52 series (e.g., MSP430G2152). The MSP430G2112IPW20R retains the Comparator_A+ module with eight analog inputs, enabling threshold detection and slope-based conversion, but lacks SAR-based 10-bit digitization. This distinction is explicitly stated in TI SLAS722G Section 1 and Table 1 footnotes.
Which debug interface does the MSP430G2112IPW20R support?
The MSP430G2112IPW20R supports Spy-Bi-Wire (SBW) - a two-wire variant of JTAG - using pins RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). It does not support full four-wire JTAG. SBW enables flash programming, breakpoint debugging, and register inspection via TI's MSP-FET or compatible tools, as documented in SLAS722G Section 2.3 and the MSP430x2xx Family User's Guide (SLAU144).
Can the MSP430G2112IPW20R drive capacitive touch buttons?
Yes, the MSP430G2112IPW20R supports capacitive touch sensing on all P1.x pins (P1.0–P1.7) using its integrated pin-oscillator circuitry. Enabling the PxIES and PxSEL bits configures individual pins for self-capacitance measurement, allowing up to eight touch buttons without external components. This capability is confirmed in SLAS722G Section 1 (Features) and Section 9.3 (Digital I/O), and requires no additional hardware beyond standard decoupling.
What are the power supply requirements for the MSP430G2112IPW20R?
The MSP430G2112IPW20R requires DVCC and DVSS for digital operation (Pin 1 and Pin 14), and AVCC and AVSS for analog functions (Pin 15 and Pin 13). DVCC and AVCC may be tied together if no high-precision analog measurements are performed; however, separating them with ferrite bead + capacitor filtering is recommended when using Comparator_A+. The valid supply range is 1.8 V to 3.6 V DC, with 2.2 V typical for active-mode current characterization, per SLAS722G Absolute Maximum Ratings and Electrical Characteristics tables.
MSP430G2112IPW20R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430G2xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2112IPW20R FAQ
1.How can I place an order for MSP430G2112IPW20R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2112IPW20R 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 MSP430G2112IPW20R reliable?
The price and inventory of MSP430G2112IPW20R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2112IPW20R is usually 5 days.
3.What payment methods are accepted for MSP430G2112IPW20R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2112IPW20R transactions.
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4.How is shipping managed for MSP430G2112IPW20R?
MSP430G2112IPW20R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2112IPW20R 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 MSP430G2112IPW20R?
For technical support, including MSP430G2112IPW20R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2112IPW20R requirements.
6.How does Aetrix verify that MSP430G2112IPW20R is sourced from the original manufacturer or authorized distributors?
All MSP430G2112IPW20R 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 MSP430G2112IPW20R meets industry standards.
7.What is the process for return or replacement of MSP430G2112IPW20R?
All MSP430G2112IPW20R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2112IPW20R, 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 MSP430G2112IPW20R part is unused and in its original packaging.
Return procedure for MSP430G2112IPW20R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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