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Home > Products > Integrated Circuits (ICs) > Embedded > Microcontrollers

Texas Instruments MSP430F2012TRSAR

Name: MSP430F2012TRSAR
Brand: Texas Instruments
SKU: MSP430F2012TRSAR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MSP430F2012TRSAR

Manufacturer:: Texas Instruments

Category:: Microcontrollers

Package:: 16-VQFN Exposed Pad

Datasheet:: MSP430F2012TRSAR.pdf

Description:: IC MCU 16BIT 2KB FLASH 16QFN

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MSP430F2012TRSAR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 2KB+256B flash memory, 128B RAM, and a 16-bit Timer_A with two capture/compare registers. It operates from 1.8 V to 3.6 V, achieves active-mode current of 220 µA at 1 MHz/2.2 V, and supports five power-saving modes including sub-1 µs wake-up from standby. It targets battery-powered sensor systems requiring analog signal acquisition, digital processing, and low-energy communication.

For engineers reviewing the MSP430F2012TRSAR datasheet, MSP430F2012TRSAR pinout, MSP430F2012TRSAR application, or MSP430F2012TRSAR equivalent, key selection criteria include its 10-bit 200-ksps ADC with internal reference and autoscan, USI supporting SPI/I²C, brownout detection, and Spy-Bi-Wire on-chip emulation - all in a 14-pin TSSOP (PW) package rated for –40°C to 105°C.

Technical Context

The MSP430F2012TRSAR belongs to the MSP430F20x2 family and integrates a 16-bit RISC CPU with constant generators, enabling high code efficiency. Its basic clock module delivers internal DCO frequencies up to 16 MHz (calibrated to ±1% at four points), ACLK from 32-kHz crystal or internal LF oscillator, and SMCLK for peripherals.

It implements a 10-bit successive-approximation ADC with eight input channels, internal 1.5-V reference, sample-and-hold, and DMA-triggered autoscan. The Universal Serial Interface (USI) provides hardware-supported SPI and I²C protocols, while Timer_A2 enables PWM generation, input capture, and interval timing with dual compare registers and interrupt capability.

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 time - enables deterministic real-time control and compact firmware.
Memory	2KB + 256B flash program memory and 128B RAM - sufficient for standalone sensor node firmware with calibration data storage.
ADC	10-bit, 200-ksps SAR ADC with 8-channel input mux, internal reference, sample-and-hold, and autoscan - supports multi-sensor polling without CPU intervention.
Power Consumption	Active mode: 220 µA @ 1 MHz / 2.2 V; Standby: 0.5 µA; Off mode (RAM retention): 0.1 µA - extends coin-cell battery life to years in intermittent-sensing applications.
Clock System	Digital-controlled oscillator (DCO) with factory-calibrated 1/8/12/16 MHz settings; supports 32-kHz crystal, internal LF oscillator, and external digital clock - enables rapid wake-up & flexible timing source selection.
Communication	Universal Serial Interface (USI) supporting SPI and I²C master/slave modes - eliminates need for external protocol ICs in sensor-to-host or sensor-to-bridge designs.
Operating Temperature	–40°C to +105°C - qualified for industrial and automotive under-hood sensor environments.

Pinout & Package

Package: 14-pin Plastic Small-Outline Thin (TSSOP), suffix "PW", RoHS-compliant, body size 5.0 mm × 4.4 mm × 1.2 mm.

Pin/Terminal	Circuit Role	Design Meaning
P1.0/TACLK/ACLK/A0	Port 1 bit 0 / Timer_A clock input / Auxiliary clock output / ADC channel 0	Primary timer clock source or ACLK distribution point; also serves as first analog input for ADC - enables synchronized sampling and low-jitter timing.
P1.1/TA0/A1	Port 1 bit 1 / Timer_A CCI0A input / ADC channel 1	Capture input for edge-triggered event timing or analog input - supports time-of-arrival measurement alongside voltage sensing.
P1.2/TA1/A2	Port 1 bit 2 / Timer_A CCI1A input / ADC channel 2	Second capture input or analog input - allows dual-event timestamping or differential pair sampling with P1.1.
P1.3/ADC10CLK/A3/VREF−/VeREF−	Port 1 bit 3 / ADC conversion clock / Negative reference input	Configurable as external ADC clock source or negative reference terminal - enables precise ratiometric measurements using external references.
P1.4/SMCLK/A4/VREF+/VeREF+	Port 1 bit 4 / Sub-main clock output / Positive reference input	Provides SMCLK to external logic or accepts positive reference voltage - supports isolated analog front-end biasing and clock synchronization.
P1.5/TA0/A5/SCLK/TMS	Port 1 bit 5 / Timer_A CCI0A alternate / ADC channel 5 / USI clock / JTAG TMS	Multi-function pin shared across timing, analog, serial, and debug domains - requires careful mode configuration during initialization.
P1.6/TA1/A6/SDO/SCL/TDI/TCLK	Port 1 bit 6 / Timer_A CCI1A alternate / ADC channel 6 / USI data out / I²C clock / JTAG test data in	Enables simultaneous use of Timer_A capture and USI master mode - critical for time-stamped sensor data transmission over I²C.
P1.7/A7/SDI/SDA/TDO/TDI	Port 1 bit 7 / ADC channel 7 / USI data in / I²C data / JTAG test data out/in	Shared analog input and bidirectional serial interface pin - supports daisy-chained sensor networks via SPI or addressable I²C nodes.
XIN/P2.6/TA1	Crytal oscillator input / Port 2 bit 6 / Timer_A CCI1A alternate	Accepts 32-kHz watch crystal for real-time clock or high-accuracy timing base - also usable as general-purpose I/O or timer input when crystal not fitted.
XOUT/P2.7	Crytal oscillator output / Port 2 bit 7	Drives external 32-kHz crystal; can be repurposed as GPIO after disabling oscillator - simplifies board layout by eliminating need for separate crystal buffer.
RST/NMI/SBWTDIO	Reset / Non-maskable interrupt / Spy-Bi-Wire data I/O	Single-pin debug interface for programming and in-circuit emulation - reduces PCB footprint and eliminates need for dedicated JTAG header.
TEST/SBWTCK	Spy-Bi-Wire test clock input	Dedicated clock pin for low-pin-count debug interface - ensures reliable programming even in space-constrained modules.
VCC	Supply voltage	1.8–3.6 V digital/analog supply - permits direct connection to single Li-ion cell or regulated 3.3-V rail without level-shifting.
VSS	Ground reference	Common return path for digital and analog circuits - must be low-impedance to maintain ADC accuracy and noise immunity.

Key Features

Feature	Design Value
Ultra-low-power operation	0.1 µA off-mode current with RAM retention enables multi-year battery life in wireless sensor nodes with infrequent wake-ups.
Integrated 10-bit ADC	Hardware autoscan across 8 channels with internal reference eliminates external ADC and reduces BOM count in multi-sensor systems.
USI peripheral	Dual-mode SPI/I²C controller with dedicated pins reduces firmware overhead and improves reliability versus bit-banged implementations.
Spy-Bi-Wire debug	Two-wire (TEST + RST/NMI/SBWTDIO) programming and emulation saves PCB area and simplifies production programming fixtures.
Brownout detector	On-chip reset generator prevents erratic operation during power ramp-up/down - critical for robust field deployment in unstable supply environments.
Factory-calibrated DCO	Four factory-trimmed DCO frequencies (1/8/12/16 MHz) enable accurate timing without external crystal - lowers system cost and component count.

Applications

Industrial Sensor Node	Smart Metering Endpoint
Use Scenario: Battery-powered temperature/humidity/pressure sensor collecting data every 5 minutes and transmitting via UART or RF link. IC Role / Device Role / Timing Role: Main controller executing sensor readout, ADC conversion, data formatting, and low-power sleep management. Use Value: 0.5 µA standby current and sub-1 µs wake-up minimize energy per measurement cycle, extending CR2032 battery life beyond 5 years.	Use Scenario: Electricity/water/gas meter reading analog transducer outputs and storing consumption logs locally before periodic upload. IC Role / Device Role / Timing Role: Data acquisition engine with 10-bit ADC, EEPROM-like flash for log storage, and RTC-capable ACLK from 32-kHz crystal. Use Value: Integrated 10-bit ADC with internal reference and autoscan handles multiple transducers without external signal conditioning, reducing bill-of-materials.
Wireless Sensor Transmitter	Low-Cost IoT Edge Node
Use Scenario: Compact environmental monitor interfacing with sub-GHz RF transceiver (e.g., CC1101) to send sensor data to gateway. IC Role / Device Role / Timing Role: Host MCU managing RF packet framing, CRC calculation, and precise timing for carrier-sense and transmit windows. Use Value: USI hardware SPI interface ensures glitch-free, low-CPU-overhead communication with RF IC, improving radio duty-cycle efficiency.	Use Scenario: Entry-level connected device (e.g., smart plug, occupancy detector) requiring local decision-making and minimal cloud interaction. IC Role / Device Role / Timing Role: Real-time decision engine executing threshold-based logic, LED control, and button debouncing with interrupt-driven I/O. Use Value: Eight programmable port P1 pins with individual pullup/pulldown resistors and edge-selectable interrupts simplify mechanical switch and indicator interfacing without external components.

Industrial Sensor Node

Smart Metering Endpoint

Use Scenario: Battery-powered temperature/humidity/pressure sensor collecting data every 5 minutes and transmitting via UART or RF link.

IC Role / Device Role / Timing Role: Main controller executing sensor readout, ADC conversion, data formatting, and low-power sleep management.

Use Value: 0.5 µA standby current and sub-1 µs wake-up minimize energy per measurement cycle, extending CR2032 battery life beyond 5 years.

Use Scenario: Electricity/water/gas meter reading analog transducer outputs and storing consumption logs locally before periodic upload.

IC Role / Device Role / Timing Role: Data acquisition engine with 10-bit ADC, EEPROM-like flash for log storage, and RTC-capable ACLK from 32-kHz crystal.

Use Value: Integrated 10-bit ADC with internal reference and autoscan handles multiple transducers without external signal conditioning, reducing bill-of-materials.

Wireless Sensor Transmitter

Low-Cost IoT Edge Node

Use Scenario: Compact environmental monitor interfacing with sub-GHz RF transceiver (e.g., CC1101) to send sensor data to gateway.

IC Role / Device Role / Timing Role: Host MCU managing RF packet framing, CRC calculation, and precise timing for carrier-sense and transmit windows.

Use Value: USI hardware SPI interface ensures glitch-free, low-CPU-overhead communication with RF IC, improving radio duty-cycle efficiency.

Use Scenario: Entry-level connected device (e.g., smart plug, occupancy detector) requiring local decision-making and minimal cloud interaction.

IC Role / Device Role / Timing Role: Real-time decision engine executing threshold-based logic, LED control, and button debouncing with interrupt-driven I/O.

Use Value: Eight programmable port P1 pins with individual pullup/pulldown resistors and edge-selectable interrupts simplify mechanical switch and indicator interfacing without external components.

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
MSP430F2002IPW	1KB+256B flash, no USI, no ADC - only comparator and Timer_A.	Limited to simple threshold-based sensing without analog digitization or serial communication.	Select when cost sensitivity outweighs need for ADC or SPI/I²C; requires external ADC or UART bridge for data transmission.
MSP430F2013IPW	Same package and pinout; replaces 10-bit ADC with 16-bit sigma-delta SD16_A converter and differential PGA inputs.	Better suited for high-precision thermocouple or strain-gauge measurements requiring >12-bit resolution and noise rejection.	Choose for applications demanding higher analog accuracy; retains full software compatibility but requires updated ADC driver configuration.

Compared with MSP430F2002IPW, the MSP430F2012TRSAR adds essential ADC and USI functionality for autonomous sensor data acquisition and host communication; compared with MSP430F2013IPW, it trades 16-bit precision for lower cost and simpler calibration while retaining identical timing, power, and I/O capabilities.

Availability

MSP430F2012TRSAR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering endpoints, and wireless sensor transmitters requiring stable component supply, extended temperature operation, and long-term lifecycle support.

Supply support for MSP430F2012TRSAR 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 ultra-low-power MCU innovation.

The MSP430F20xx series was designed specifically for battery-operated portable measurement and sensing applications where extended runtime, small footprint, and integrated analog peripherals are critical.

FAQ

What is the maximum operating frequency of the MSP430F2012TRSAR's DCO?

The MSP430F2012TRSAR's digitally controlled oscillator (DCO) is factory-calibrated to deliver stable operation at 1 MHz, 8 MHz, 12 MHz, and 16 MHz - with typical accuracy of ±1% across voltage and temperature. It achieves full stabilization in less than 1 µs, enabling rapid wake-up from LPM3/LPM4 into active mode for time-critical tasks. The DCO does not require external components and is fully software-controllable via the BCSCTL1 and DCOCTL registers.

Does the MSP430F2012TRSAR support in-system programming?

Yes, the MSP430F2012TRSAR supports in-system programming via its Spy-Bi-Wire interface using only two pins: TEST/SBWTCK and RST/NMI/SBWTDIO. This allows full flash memory programming, erasure, and debugging without removing the device from the PCB. TI's MSP-FET and compatible tools enable secure, production-ready programming with fuse-based code protection enabled by default after initial programming.

What ADC reference options are available on the MSP430F2012TRSAR?

The MSP430F2012TRSAR provides an internal 1.5-V reference for the 10-bit ADC, selectable via ADC10CTL0 register bits SREF. External references may be applied to P1.3 (VREF−/VeREF−) and P1.4 (VREF+/VeREF+), supporting ratiometric measurements with external sensors or precision voltage sources. No external capacitor is required for internal reference stability, simplifying layout and reducing component count.

Can the MSP430F2012TRSAR operate without an external crystal?

Yes, the MSP430F2012TRSAR operates fully without an external crystal. Its internal digitally controlled oscillator (DCO) provides all necessary clock sources - MCLK, SMCLK, and ACLK - with factory calibration ensuring ±1% accuracy at 1/8/12/16 MHz. The 32-kHz crystal input (XIN/XOUT) is optional and used only when high-accuracy real-time clock or ultra-low-power ACLK is required; otherwise, the internal very-low-power oscillator suffices.

How many I/O pins does the MSP430F2012TRSAR provide in the TSSOP package?

The MSP430F2012TRSAR in the 14-pin TSSOP (PW) package provides ten functional I/O pins: eight bits on Port 1 (P1.0–P1.7), and two bits on Port 2 (P2.6 and P2.7). All ten pins support individually configurable direction, pullup/pulldown resistors, and edge-selectable interrupts. P2.6 and P2.7 double as crystal oscillator terminals but function as general-purpose I/O when the oscillator is disabled.

MSP430F2012TRSAR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Package/Case:: 16-VQFN Exposed Pad

Series:: MSP430F2xx

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Not Verified

Core Processor:: MSP430 CPU16

Core Size:: 16-Bit

Speed:: 16MHz

Connectivity:: I2C, SPI

Peripherals:: Brown-out Detect/Reset, POR, PWM, WDT

Number of I/O:: 10

Program Memory Size:: 2KB (2K x 8 + 256B)

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 ~ 105°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:

MSP430F2012TRSAR FAQ

1.How can I place an order for MSP430F2012TRSAR through Aetrix?

Please submit a Request for Quotation (RFQ) for MSP430F2012TRSAR 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 MSP430F2012TRSAR reliable?

The price and inventory of MSP430F2012TRSAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2012TRSAR is usually 5 days.

3.What payment methods are accepted for MSP430F2012TRSAR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2012TRSAR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MSP430F2012TRSAR?

MSP430F2012TRSAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MSP430F2012TRSAR 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 MSP430F2012TRSAR?

For technical support, including MSP430F2012TRSAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2012TRSAR requirements.

6.How does Aetrix verify that MSP430F2012TRSAR is sourced from the original manufacturer or authorized distributors?

All MSP430F2012TRSAR 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 MSP430F2012TRSAR meets industry standards.

7.What is the process for return or replacement of MSP430F2012TRSAR?

All MSP430F2012TRSAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2012TRSAR, 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 MSP430F2012TRSAR part is unused and in its original packaging.

Return procedure for MSP430F2012TRSAR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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