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Texas Instruments MSP430F2112IPW
- Part No.:
- MSP430F2112IPW
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430F2112IPW.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:122
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Product details
Overview
MSP430F2112IPW from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 2KB flash, 256B RAM, a 10-bit 200-ksps ADC with internal reference, two 16-bit timers (Timer0_A3 with three capture/compare registers and Timer1_A2 with two), USCI_A0 (UART/LIN/IrDA/SPI) and USCI_B0 (SPI/I²C), and up to 24 I/O pins in a 28-pin TSSOP package. It targets battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the MSP430F2112IPW datasheet, MSP430F2112IPW pinout, MSP430F2112IPW application, or MSP430F2112IPW equivalent, key selection criteria include active-mode current at 1 MHz (250 µA), standby current (0.7 µA), brownout detection, integrated DCO with ±1% calibration, and Spy-Bi-Wire debug interface compatibility.
Technical Context
The MSP430F2112IPW implements a 16-bit CPU with seven addressing modes and register-to-register execution in one cycle. Its clock system integrates a digitally controlled oscillator (DCO), low-frequency internal oscillator, and external crystal support (32 kHz or up to 16 MHz), enabling sub-1-µs wake-up from LPM4.
Peripherals are memory-mapped and accessible via all instructions. The USCI modules support asynchronous UART with auto-baudrate (LIN), IrDA encoding/decoding, synchronous SPI, and I²C - all configurable without CPU intervention during operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers; single-cycle register operations enable deterministic timing for real-time control. |
| Flash / RAM | 2 KB flash + 256 B information memory; 256 B RAM - sufficient for compact firmware with calibrated DCO and ADC offset/gain tables stored in info memory. |
| ADC Performance | 10-bit SAR ADC, 200 ksps max, with internal 1.5 V/2.5 V reference, sample-and-hold, autoscan, and data transfer controller (DTC) for autonomous multi-channel sampling. |
| Power Modes | Active mode: 250 µA @ 1 MHz, 2.2 V; Standby: 0.7 µA; Off (RAM retention): 0.1 µA - enables multi-year operation on coin-cell batteries. |
| Timers | Timer0_A3 (3 CC registers) supports PWM, input capture, and interval timing; Timer1_A2 (2 CC registers) adds independent timing capability for dual-signal processing. |
| Communication | USCI_A0: UART/LIN/IrDA/SPI; USCI_B0: SPI/I²C - dual serial interfaces allow concurrent sensor bus (I²C) and host interface (UART) without resource conflict. |
| Debug Interface | Spy-Bi-Wire (2-wire JTAG) - enables full emulation, flash programming, and breakpoint debugging using MSP-FET430UIF or MSP-FET430U28. |
Pinout & Package
Package: 28-pin TSSOP (PW), 4.4 mm × 9.7 mm, 0.65 mm pitch, RoHS-compliant. Thermal pad not present. Compatible with standard reflow profiles per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK/ADC10CLK/CAOUT | Timer/ADC/Comparator output | Configurable clock input for Timer_A; ADC conversion trigger source; comparator output signal for slope A/D or threshold detection. |
| P1.1/TA0.0/TA1.0 | Timer capture/compare | Shared capture input for Timer0_A3 CCI0A and Timer1_A2 CCI0A - supports synchronized edge detection across both timers. |
| P2.0/ACLK/A0/CA2 | Low-speed clock/analog input | ACLK output for peripheral sync; ADC channel A0 input; comparator input CA2 - enables simultaneous clock distribution and analog sensing. |
| XIN/P2.6/CA6 & XOUT/P2.7/CA7 | Crystal oscillator terminals | Supports 32.768 kHz watch crystal for RTC or low-power timing; also usable as general I/O or comparator inputs when crystal not fitted. |
| RST/NMI/SBWTDIO | Reset/debug I/O | Active-low reset; non-maskable interrupt input; bidirectional Spy-Bi-Wire data line - single pin handles boot, fault recovery, and debug communication. |
| TEST/SBWTCK | Debug clock input | Provides clock for Spy-Bi-Wire programming and test; must be driven high during normal operation to avoid unintended entry into debug mode. |
Key Features
| Feature | Design Value |
|---|---|
| Digital Controlled Oscillator (DCO) | Four factory-calibrated frequencies (1/4/8/12 MHz) with ±1% accuracy at 2.2–3.6 V - eliminates need for external crystal in cost-sensitive applications while maintaining fast wake-up. |
| Data Transfer Controller (DTC) | Automatically moves ADC conversion results to RAM without CPU involvement - reduces active time by >90% during multi-channel acquisition sequences. |
| Brownout Detector | Monitors DVCC and asserts reset if voltage drops below programmable threshold (1.6–2.6 V in 0.2 V steps) - prevents erratic code execution during battery sag. |
| Comparator_A+ | Supports precision slope A/D conversion, battery voltage monitoring, and windowed analog event detection with hysteresis control - replaces external comparators in power management circuits. |
| Universal Serial Communication Interface | USCI_A0 and USCI_B0 operate independently with separate clock sources - allows UART host link and I²C sensor bus to run concurrently at different baud rates. |
Applications
| Wireless Sensor Node | Portable Medical Device |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting data over UART to BLE module. IC Role / Device Role / Timing Role: Main controller executing sensor readout, ADC conversion, data formatting, and UART transmission; uses LPM3 between samples. Use Value: 0.7 µA standby current extends 200 mAh coin-cell life to >5 years; integrated DCO avoids crystal cost and board space. | Use Scenario: Handheld pulse oximeter requiring analog front-end conditioning and low-power display update. IC Role / Device Role / Timing Role: ADC controller for photodiode signals; drives OLED via SPI; manages LED timing with Timer0_A3 PWM outputs. Use Value: 10-bit ADC with internal reference ensures consistent SpO₂ calculation accuracy; 256B RAM holds calibration coefficients and buffer data. |
| Industrial Data Logger | Smart Meter Sensor Interface |
Use Scenario: Remote environmental logger recording temperature, pressure, and supply voltage every 10 minutes. IC Role / Device Role / Timing Role: System supervisor triggering ADC conversions, storing results in flash, and managing real-time clock via ACLK from 32 kHz crystal. Use Value: Brownout detector prevents corrupted flash writes during brownout; 2KB flash stores >1000 timestamped readings with metadata. | Use Scenario: Sub-metering module interfacing with shunt-based current sensors and communicating via RS-485. IC Role / Device Role / Timing Role: Isolated analog front-end controller performing differential ADC measurements and UART-to-RS485 protocol translation. Use Value: Comparator_A+ monitors supply rail for undervoltage lockout; USCI_A0 supports LIN-compatible auto-baudrate for robust field commissioning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F2122IPW | 4 KB flash, 512 B RAM, same peripherals and pinout - direct upgrade path with doubled memory capacity. | Required for firmware with larger protocol stacks (e.g., Modbus RTU) or extended data buffering. | Select when future firmware expansion or additional sensor channels demand more code/data space without PCB redesign. |
| MSP430G2553IPW | Same 28-pin TSSOP package; 16 KB flash, 512 B RAM; enhanced USCI (dual UART/I²C); no integrated comparator or DTC. | Lacks slope A/D and autonomous ADC data movement - requires CPU polling or timer-driven sampling. | Choose for higher memory needs and dual serial interfaces where comparator-based analog monitoring is unnecessary. |
Compared with MSP430F2122IPW and MSP430G2553IPW, the MSP430F2112IPW offers optimal balance of ultra-low power (0.1 µA off-mode), integrated analog features (Comparator_A+, DTC), and minimal footprint - making it ideal for cost-constrained, battery-critical designs where memory headroom is limited.
Availability
MSP430F2112IPW is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical devices, industrial data loggers, and smart meter sensor interfaces requiring stable component supply and long-term manufacturability.
Supply support for MSP430F2112IPW 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 over 50 years of microcontroller innovation.
The MSP430F21x2 product line delivers ultra-low-power mixed-signal control for battery-operated measurement systems, emphasizing energy efficiency, integrated analog peripherals, and rapid wake-up for intermittent sensing tasks.
FAQ
What is the maximum operating frequency of the MSP430F2112IPW?
The MSP430F2112IPW supports a maximum CPU clock frequency of 16 MHz using the internal DCO or external HF crystal. Factory-calibrated DCO frequencies are provided at 1, 4, 8, and 12 MHz with ±1% accuracy across voltage and temperature - enabling reliable high-speed operation without external clock components in most applications. The MSP430F2112IPW achieves this while maintaining ultra-low active current (250 µA @ 1 MHz, 2.2 V).
Does the MSP430F2112IPW support hardware UART with automatic baud rate detection?
Yes, the MSP430F2112IPW's USCI_A0 module supports enhanced UART with automatic baud rate detection (LIN compliant). This feature allows the MSP430F2112IPW to detect incoming bit rates dynamically without prior configuration - essential for interoperability with variable-speed hosts in automotive diagnostics or field-deployed sensor networks. It operates alongside standard UART, IrDA, and SPI modes on the same hardware block.
How many analog input channels does the MSP430F2112IPW ADC support?
The MSP430F2112IPW integrates a 10-bit ADC10 module with eight external analog input channels (A0–A7), plus internal references and temperature sensor. Channel selection is fully programmable via ADC10CTL1, and autoscan mode enables sequential conversion of multiple channels without software intervention - a capability enhanced by the integrated Data Transfer Controller (DTC) that autonomously stores results in RAM.
Can the MSP430F2112IPW operate without an external crystal?
Yes, the MSP430F2112IPW can operate entirely without external crystals. Its digitally controlled oscillator (DCO) provides four factory-calibrated frequencies (1/4/8/12 MHz) accurate to ±1% over voltage and temperature. The internal very-low-power oscillator supports 32 kHz operation for ACLK. External crystals are optional - used only when higher frequency stability (e.g., for precise UART timing or RTC) is required.
What debug interface does the MSP430F2112IPW use, and what tools are compatible?
The MSP430F2112IPW uses the 2-wire Spy-Bi-Wire (SBW) interface for debugging and programming, accessed via RST/NMI/SBWTDIO and TEST/SBWTCK pins. It is fully supported by TI's MSP-FET430UIF (USB) and MSP-FET430U28 (PW-package target board) debuggers. These tools enable flash programming, real-time variable inspection, breakpoints, and low-power mode analysis - all without requiring a full 4-wire JTAG header on the target PCB.
MSP430F2112IPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430F2xx
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, LINbus, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 24
- Program Memory Size:
- 2KB (2K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 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:
MSP430F2112IPW FAQ
1.How can I place an order for MSP430F2112IPW through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2112IPW 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 MSP430F2112IPW reliable?
The price and inventory of MSP430F2112IPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2112IPW is usually 5 days.
3.What payment methods are accepted for MSP430F2112IPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2112IPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2112IPW?
MSP430F2112IPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2112IPW 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 MSP430F2112IPW?
For technical support, including MSP430F2112IPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2112IPW requirements.
6.How does Aetrix verify that MSP430F2112IPW is sourced from the original manufacturer or authorized distributors?
All MSP430F2112IPW 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 MSP430F2112IPW meets industry standards.
7.What is the process for return or replacement of MSP430F2112IPW?
All MSP430F2112IPW units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2112IPW, 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 MSP430F2112IPW part is unused and in its original packaging.
Return procedure for MSP430F2112IPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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