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Texas Instruments MSP430G2112IPW20
- Part No.:
- MSP430G2112IPW20
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2112IPW20.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:607
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Product details
Overview
MSP430G2112IPW20 from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 1 kB flash, 128 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) for SPI/I²C, and an on-chip analog comparator. It operates from 1.8 V to 3.6 V and supports up to eight capacitive-touch I/O pins - ideal for battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the MSP430G2112IPW20 datasheet, MSP430G2112IPW20 pinout, MSP430G2112IPW20 application, or MSP430G2112IPW20 equivalent, key selection criteria include its 20-pin TSSOP package, absence of integrated ADC10 (distinguishing it from G2x52 variants), low-power operating modes (LPM0–LPM4), and Spy-Bi-Wire debug interface compatibility.
Technical Context
The MSP430G2112IPW20 implements a 16-bit RISC CPU with 62.5-ns instruction cycle time and constant generators for optimized code efficiency. Its clock system integrates a digitally controlled oscillator (DCO) calibrated at four frequencies (up to 16 MHz), internal LF oscillator, and external crystal support (32 kHz).
It features two 8-bit digital I/O ports (P1 and P2), individually configurable pullup/pulldown resistors, edge-selectable interrupts, and pin-oscillator capability for capacitive touch. The USI module provides hardware-level SPI and I²C protocol support without CPU overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and 62.5-ns instruction cycle - enables deterministic real-time control in resource-constrained systems. |
| Memory | 1 kB flash (main memory) + 256 B information memory + 128 B RAM - sufficient for compact firmware with calibration data storage. |
| Supply Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion, alkaline, or coin-cell power sources without external regulation. |
| Ultra-Low Power Modes | Five software-selectable modes (LPM0–LPM4); standby current 0.5 µA, off-mode (RAM retention) 0.1 µA - extends battery life in intermittent-sensing applications. |
| Timer & Peripherals | One 16-bit Timer_A with three capture/compare registers; USI supporting SPI/I²C; Comparator_A+ with 8-channel input - enables precise timing, serial communication, and analog threshold detection. |
| Debug Interface | Spy-Bi-Wire (2-wire JTAG) via RST/NMI and TEST pins - allows in-system programming and debugging with minimal PCB footprint. |
| I/O Capability | Up to 16 GPIO (8 on P1, 8 on P2), all with programmable pullup/down and interrupt-on-edge - supports direct sensor interfacing and capacitive-touch button implementation. |
Pinout & Package
Package: 20-pin TSSOP (PW), 0.65 mm pitch, body size 6.5 mm × 4.4 mm - suitable for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, 15 | DVCC / AVCC / DVSS | Digital supply (DVCC), analog supply (AVCC), and ground (DVSS) - separate analog/digital supplies reduce noise coupling in mixed-signal operation. |
| 2, 3, 4, 5, 6, 7, 8, 9 | P1.0–P1.7 | Port 1 bidirectional I/O with timer, USI, comparator, and analog input functions - primary interface for sensors, buttons, and peripherals. |
| 10, 11, 12, 13, 14 | P2.0–P2.5, XIN, XOUT | Port 2 I/O (P2.0–P2.5) and crystal oscillator terminals (XIN/P2.6, XOUT/P2.7) - supports external timing reference and additional GPIO. |
| 17, 18, 19 | RST/NMI/SBWTDIO, TEST/SBWTCK, XIN/P2.6 | Spy-Bi-Wire debug interface (SBWTDIO, SBWTCK) and reset/non-maskable interrupt - enables programming, debugging, and system recovery without dedicated JTAG header. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | Active mode: 220 µA at 1 MHz/2.2 V; LPM4: 0.1 µA - enables multi-year operation on CR2032 coin cells in wake-up-and-transmit sensor designs. |
| Integrated analog comparator | Comparator_A+ with 8 selectable inputs and CAOUT output - eliminates need for external comparators in battery-monitoring or threshold-detection circuits. |
| Capacitive-touch I/O | Up to 16 pins support pin-oscillator mode - enables robust, low-cost touch interfaces without dedicated controller ICs or external components. |
| Calibrated DCO clock | Four factory-trimmed DCO frequencies (1/8/12/16 MHz) stored in info memory - ensures accurate timing without external crystal in cost-sensitive applications. |
| Programmable security fuse | On-chip code protection via security fuse - prevents unauthorized firmware readout in production units while allowing full development access during design. |
Applications
| Smart Sensor Node | Portable Medical Device |
|---|---|
Use Scenario: A wireless temperature/humidity node powered by a single AA battery samples environmental data every 30 seconds, processes values, and transmits via BLE module. IC Role / Device Role / Timing Role: MSP430G2112IPW20 acts as main system controller - managing sensor I²C reads, low-power sleep/wake cycles, and SPI communication with radio IC. Use Value: Sub-µA LPM4 current and fast <1 µs wake-up minimize energy per measurement cycle, extending battery life beyond 2 years. | Use Scenario: A handheld pulse oximeter uses photodiode signals conditioned by op-amps and digitized via external ADC; MCU handles LED timing, signal averaging, and display updates. IC Role / Device Role / Timing Role: MSP430G2112IPW20 serves as timing and control engine - generating precise LED drive pulses using Timer_A outputs and synchronizing analog front-end sampling. Use Value: Deterministic 16-bit timer with capture/compare registers ensures consistent LED duty cycle and inter-pulse intervals critical for SpO₂ accuracy. |
| Battery Supervision Module | Industrial Control Panel |
Use Scenario: A rechargeable Li-ion pack includes embedded fuel gauge and overvoltage/undervoltage protection circuitry monitoring cell voltage and temperature. IC Role / Device Role / Timing Role: MSP430G2112IPW20 functions as analog supervisor - using Comparator_A+ to monitor VBAT against internal references and trigger alerts via GPIO. Use Value: Built-in comparator with programmable hysteresis replaces discrete comparator + reference IC, reducing BOM count and layout area. | Use Scenario: A DIN-rail mounted HVAC controller reads rotary encoder position, drives 7-segment display, and communicates status via RS-485. IC Role / Device Role / Timing Role: MSP430G2112IPW20 operates as human-interface processor - scanning encoder inputs, updating display segments via GPIO bit-banging, and managing UART framing. Use Value: Eight programmable pullup/pulldown resistors on P1/P2 simplify encoder debouncing and segment driver logic, eliminating external resistors. |
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 |
|---|---|---|---|
| MSP430G2212IPW20 | 2 kB flash, 256 B RAM, same peripherals and pinout - no ADC10, identical power profile and USI/Timer_A functionality. | Supports larger firmware images and more complex state machines without requiring board redesign. | Select when firmware growth exceeds 1 kB or additional RAM is needed for buffering or algorithmic computation. |
| MSP430G2132IPW20 | 1 kB flash, 128 B RAM, adds USI-based hardware I²C master/slave and enhanced comparator features - same package and core architecture. | Enables reliable multi-master I²C bus participation and improved analog window-comparison accuracy. | Choose when I²C slave functionality or tighter comparator hysteresis control is required in the same footprint. |
Compared with MSP430G2212IPW20 and MSP430G2132IPW20, the MSP430G2112IPW20 offers the smallest memory footprint and lowest bill-of-materials cost for fixed-function sensor controllers where code size and peripheral count are tightly constrained.
Availability
MSP430G2112IPW20 is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical devices, battery supervision modules, and industrial control panels requiring stable component supply across long-lifecycle production programs.
Supply support for MSP430G2112IPW20 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 and embedded processing solutions, with deep expertise in low-power design and mixed-signal integration.
The MSP430G2xx family targets ultra-low-power embedded applications - designed specifically for battery-operated sensing, metering, and portable instrumentation where energy efficiency and integration are critical.
FAQ
Does the MSP430G2112IPW20 include an integrated ADC?
No, the MSP430G2112IPW20 does not include an integrated ADC10 module. This distinguishes it from the MSP430G2x52 series (e.g., MSP430G2452). The MSP430G2112IPW20 retains the analog comparator (Comparator_A+) but omits the 10-bit SAR ADC, making it suitable for applications relying on external ADCs or comparator-based threshold detection only.
What debug interface does the MSP430G2112IPW20 support?
The MSP430G2112IPW20 supports Spy-Bi-Wire (SBW), a 2-wire variant of JTAG, using pins RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 17). This interface enables full in-system programming, debugging, and flash memory access without requiring a 4-wire JTAG header, reducing PCB routing complexity and cost.
Can the MSP430G2112IPW20 operate without an external crystal?
Yes, the MSP430G2112IPW20 can operate entirely from its internal digitally controlled oscillator (DCO), which is factory-calibrated at four frequencies (1/8/12/16 MHz). External crystals (e.g., 32 kHz for ACLK) are optional and used only when higher timing precision or ultra-low-power real-time clock functionality is required.
How many I/O pins does the MSP430G2112IPW20 provide in the TSSOP-20 package?
The MSP430G2112IPW20 provides 16 usable I/O pins in the 20-pin TSSOP package: Port 1 (P1.0–P1.7) offers 8 pins, and Port 2 (P2.0–P2.5, plus P2.6/XIN and P2.7/XOUT) provides 8 additional pins - all individually configurable as digital inputs/outputs with interrupt and pullup/pulldown capability.
Is the MSP430G2112IPW20 pin-compatible with other devices in the MSP430G2xx family?
Yes, the MSP430G2112IPW20 shares identical pinout and package (TSSOP-20) with other G2xx devices in the same package option, including MSP430G2212IPW20, MSP430G2312IPW20, and MSP430G2412IPW20. This enables drop-in replacement for memory or peripheral upgrades without PCB changes - provided peripheral usage remains within the subset supported by the base device.
MSP430G2112IPW20 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:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2112IPW20 FAQ
1.How can I place an order for MSP430G2112IPW20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2112IPW20 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 MSP430G2112IPW20 reliable?
The price and inventory of MSP430G2112IPW20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2112IPW20 is usually 5 days.
3.What payment methods are accepted for MSP430G2112IPW20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2112IPW20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2112IPW20?
MSP430G2112IPW20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2112IPW20 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 MSP430G2112IPW20?
For technical support, including MSP430G2112IPW20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2112IPW20 requirements.
6.How does Aetrix verify that MSP430G2112IPW20 is sourced from the original manufacturer or authorized distributors?
All MSP430G2112IPW20 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 MSP430G2112IPW20 meets industry standards.
7.What is the process for return or replacement of MSP430G2112IPW20?
All MSP430G2112IPW20 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2112IPW20, 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 MSP430G2112IPW20 part is unused and in its original packaging.
Return procedure for MSP430G2112IPW20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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