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Texas Instruments MSP430F2001IRSAR
- Part No.:
- MSP430F2001IRSAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 16-VQFN Exposed Pad
- Datasheet:
-
MSP430F2001IRSAR.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 16QFN
- Quantity:
- Payment:
- Shipping:
Inventory:17,714
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Product details
Overview
MSP430F2001IRSAR from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 1KB Flash + 256B information memory, 128B RAM, a 16-bit Timer_A with two capture/compare registers, and an analog comparator. It operates from 1.8 V to 3.6 V and supports five power-saving modes, including sub-1 µs wake-up from standby - ideal for battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430F2001IRSAR datasheet, MSP430F2001IRSAR pinout, MSP430F2001IRSAR application, or MSP430F2001IRSAR equivalent, key selection criteria include its 14-pin TSSOP (RSAR) package, Spy-Bi-Wire debug interface, absence of ADC or USI peripherals, and compatibility with TI's MSP430x2xx toolchain and development ecosystem.
Technical Context
The MSP430F2001IRSAR implements a 16-bit RISC CPU with constant generators and seven addressing modes, enabling single-cycle register operations at up to 16 MHz via its digitally controlled oscillator (DCO). Its basic clock module provides ACLK, MCLK, and SMCLK from internal LF/DCO sources or external 32-kHz crystal, with factory-calibrated DCO frequencies at 1/8/12/16 MHz.
It integrates a versatile analog comparator with eight-channel input multiplexing (CA0–CA7), programmable hysteresis, and output routing to P1.3/CAOUT and P1.7/CAOUT. The device lacks ADC and serial interfaces - distinguishing it from MSP430F20x2/x3 variants - and relies on Port P1 (8-bit) and Port P2 (2-bit) for I/O, each with individually configurable pullup/pulldown resistors and edge-selectable interrupts.
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 at 16 MHz |
| Memory | 1KB + 256B Flash (main + info segments), 128B RAM - supports in-system programming via Spy-Bi-Wire |
| Power Consumption | 220 µA active @ 1 MHz/2.2 V; 0.5 µA standby; 0.1 µA off mode with RAM retention |
| Operating Voltage | 1.8 V to 3.6 V - enables direct operation from single-cell Li-ion or two-cell alkaline batteries |
| Wake-up Time | < 1 µs from LPM3/LPM4 to active mode - critical for duty-cycled sensor sampling |
| Comparator | Single analog comparator with 8-input mux (CA0–CA7), CAOUT output, and internal reference support |
| Clock Sources | Internal DCO (calibrated to ±1% at 1/8/12/16 MHz), internal VLO, 32-kHz crystal, or external digital clock |
Pinout & Package
Package: 14-pin Plastic Small-Outline Thin (TSSOP), suffix "RSAR" per TI ordering nomenclature - RoHS-compliant, 5.0 mm × 4.4 mm footprint, 0.65 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK/ACLK/CA0 | Port 1 bit 0 / Timer_A clock input / ACLK output / Comparator_A+ input 0 | Primary timer clock source; also routes ACLK externally or feeds comparator channel 0 |
| P1.1/TA0/CA1 | Port 1 bit 1 / Timer_A CCI0A input / Comparator_A+ input 1 | Enables capture of external events or comparison against TA0 output; dual-function I/O |
| P1.2/TA1/CA2 | Port 1 bit 2 / Timer_A CCI1A input / Comparator_A+ input 2 | Supports second capture/compare channel and third comparator input |
| P1.3/CAOUT/CA3 | Port 1 bit 3 / Comparator_A+ output / Comparator_A+ input 3 | Dedicated comparator output pin; also accepts analog input CA3 for threshold detection |
| P1.4/SMCLK/C4/TCK | Port 1 bit 4 / SMCLK output / Comparator_A+ input 4 / JTAG test clock | Provides subsystem clock to peripherals; shares pin with JTAG TCK for debug access |
| P1.5/TA0/CA5/TMS | Port 1 bit 5 / Timer_A Out0 / Comparator_A+ input 5 / JTAG test mode select | Delivers TA0 compare output while supporting JTAG boundary scan control |
| P1.6/TA1/CA6/TDI/TCLK | Port 1 bit 6 / Timer_A Out1 / Comparator_A+ input 6 / JTAG test data input | Routes TA1 compare output and serves as JTAG TDI during programming |
| P1.7/CAOUT/CA7/TDO/TDI | Port 1 bit 7 / Comparator_A+ output / Comparator_A+ input 7 / JTAG test data I/O | Second comparator output path; bidirectional JTAG pin for debug data exchange |
| RST/NMI/SBWTDIO | Reset / non-maskable interrupt / Spy-Bi-Wire test data I/O | Active-low reset with NMI capability; primary debug interface pin for programming and emulation |
| TEST/SBWTCK | Test mode select / Spy-Bi-Wire test clock | Activates Spy-Bi-Wire debug mode; must be held low during normal operation |
| XIN/P2.6/TA1 | Crystal input / Port 2 bit 6 / Timer_A CCI1A alternate input | Accepts 32-kHz crystal or external clock; doubles as TA1 capture input when not used for XTAL |
| XOUT/P2.7 | Crystal output / Port 2 bit 7 | Drives crystal oscillator; functions as general-purpose I/O if crystal not used |
| VCC | Supply voltage | 1.8–3.6 V digital/analog supply - single rail simplifies power design |
| VSS | Ground reference | Common return for all digital and analog circuits - requires low-impedance PCB connection |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA off-mode current with RAM retention extends shelf life and battery runtime in intermittent-use devices |
| Sub-1 µs wake-up from LPM4 | Enables rapid response to external triggers without sacrificing energy efficiency in sleep-dominated applications |
| Factory-calibrated DCO | Four precision DCO frequencies (1/8/12/16 MHz, ±1%) eliminate need for external crystal in cost-sensitive timing designs |
| On-chip analog comparator | Eight selectable inputs (CA0–CA7) and dual outputs (CAOUT on P1.3/P1.7) support window-compare, zero-crossing, and slope-A/D functions |
| Spy-Bi-Wire debug interface | Two-wire (SBWTDIO + SBWTCK) programming and emulation reduces debug footprint vs. full JTAG |
| Code protection fuse | Security fuse prevents unauthorized readout of Flash contents - essential for firmware IP protection |
Applications
| Smart Sensor Node | Portable Medical Monitor |
|---|---|
|
Use Scenario: Battery-powered temperature/humidity sensor with periodic wake-up, analog signal conditioning, and RF transmission. IC Role / Device Role / Timing Role: MSP430F2001IRSAR performs analog threshold detection via its comparator, manages low-power scheduling, and controls RF transceiver enable timing. Use Value: Sub-1 µs wake-up and 0.1 µA off-mode current minimize quiescent drain, extending coin-cell life beyond 5 years in 1-minute sampling intervals. |
Use Scenario: Wearable pulse oximeter using photodiode signals and LED drive control. IC Role / Device Role / Timing Role: MSP430F2001IRSAR compares photodiode output against reference thresholds, triggers LED timing pulses via Timer_A, and sequences measurement cycles. Use Value: Integrated comparator eliminates external op-amp components; calibrated DCO ensures precise LED pulse width without crystal BOM cost. |
| Industrial Control Interface | Energy Harvesting System |
|
Use Scenario: DIN-rail mounted status monitor for HVAC actuators using discrete switch inputs and relay control. IC Role / Device Role / Timing Role: MSP430F2001IRSAR reads mechanical switch states via P1.x, debounces inputs in firmware, and drives opto-isolated relay drivers. Use Value: Eight programmable I/O pins with pullup/pulldown resistors simplify external component count; brownout detector ensures reliable reset during line fluctuations. |
Use Scenario: Solar-powered environmental logger harvesting microwatts from PV cells and storing data in Flash. IC Role / Device Role / Timing Role: MSP430F2001IRSAR wakes on capacitor voltage threshold (via comparator), samples sensors, writes to Flash, then returns to 0.1 µA off mode. Use Value: Comparator-based wake-up eliminates always-on voltage supervisor IC; Flash write endurance supports >100k cycles for long-term logging. |
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 |
|---|---|---|---|
| MSP430F2011IRSAR | 2KB Flash + 256B info memory, same 128B RAM, identical comparator and Timer_A peripherals | Supports larger firmware images and more complex state machines without external memory | Select when firmware exceeds 1KB or requires future feature expansion; pin-compatible and drop-in upgrade |
| MSP430F2002IRSAR | Adds 10-bit 200-ksps ADC with 8 channels and autoscan; removes comparator functionality | Replaces analog threshold detection with digitized sensor acquisition and software-based comparison | Choose when absolute analog accuracy or multi-channel sampling is required over comparator hysteresis and speed |
Compared with MSP430F2001IRSAR, the MSP430F2011IRSAR offers double Flash capacity for enhanced firmware scalability, while the MSP430F2002IRSAR trades comparator flexibility for integrated ADC resolution - making each optimal for distinct sensing architectures.
Availability
MSP430F2001IRSAR is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, and industrial control interfaces requiring stable component supply across extended production lifecycles.
Supply support for MSP430F2001IRSAR 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 90 years of innovation in low-power design.
The MSP430F2001IRSAR belongs to TI's MSP430F20xx ultra-low-power MCU family, engineered specifically for battery-operated measurement and sensing applications where nanowatt-level standby and microsecond wake-up are mandatory.
FAQ
What is the maximum operating frequency of the MSP430F2001IRSAR?
The MSP430F2001IRSAR supports a maximum system clock (MCLK) of 16 MHz via its factory-calibrated digitally controlled oscillator (DCO). This frequency is achievable without external crystals due to four internal calibration points (1/8/12/16 MHz) trimmed to ±1% accuracy - enabling high-speed computation while maintaining ultra-low-power operation in active mode.
Does the MSP430F2001IRSAR include an analog-to-digital converter (ADC)?
No, the MSP430F2001IRSAR does not include an ADC. It belongs to the MSP430F20x1 subfamily, which features only an analog comparator (with eight inputs and dual outputs) and no ADC peripheral. For ADC functionality, TI offers the MSP430F20x2 (10-bit ADC) or MSP430F20x3 (16-bit sigma-delta ADC) variants - neither of which are pin-compatible with the MSP430F2001IRSAR.
What debug interface does the MSP430F2001IRSAR support?
The MSP430F2001IRSAR supports the Spy-Bi-Wire (SBW) interface using two pins: RST/NMI/SBWTDIO and TEST/SBWTCK. This two-wire protocol enables full in-circuit debugging, flash programming, and emulation - compatible with TI's MSP-FET and IAR Embedded Workbench tools. It does not support standard 4-wire JTAG.
Can the MSP430F2001IRSAR operate from a single 1.8 V supply?
Yes, the MSP430F2001IRSAR is fully specified to operate across 1.8 V to 3.6 V. At 1.8 V, it maintains full functionality including Flash programming, comparator operation, and Timer_A timing - with active current reduced to ~150 µA at 1 MHz. This makes it suitable for direct use with single-cell LiFePO₄ or regulated 1.8 V rails.
What is the purpose of the CAOUT pins on the MSP430F2001IRSAR?
The MSP430F2001IRSAR provides two CAOUT (Comparator_A+ output) pins: P1.3/CAOUT and P1.7/CAOUT. These pins deliver the comparator's digital output signal - useful for driving external logic, triggering interrupts, or controlling peripheral enable lines. Both pins reflect the same internal comparator result, allowing flexible PCB routing or dual-signal fanout without additional buffers.
MSP430F2001IRSAR 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:
- -
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 10
- Program Memory Size:
- 1KB (1K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- Slope A/D
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F2001IRSAR FAQ
1.How can I place an order for MSP430F2001IRSAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2001IRSAR 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 MSP430F2001IRSAR reliable?
The price and inventory of MSP430F2001IRSAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2001IRSAR is usually 5 days.
3.What payment methods are accepted for MSP430F2001IRSAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2001IRSAR transactions.
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4.How is shipping managed for MSP430F2001IRSAR?
MSP430F2001IRSAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2001IRSAR 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 MSP430F2001IRSAR?
For technical support, including MSP430F2001IRSAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2001IRSAR requirements.
6.How does Aetrix verify that MSP430F2001IRSAR is sourced from the original manufacturer or authorized distributors?
All MSP430F2001IRSAR 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 MSP430F2001IRSAR meets industry standards.
7.What is the process for return or replacement of MSP430F2001IRSAR?
All MSP430F2001IRSAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2001IRSAR, 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 MSP430F2001IRSAR part is unused and in its original packaging.
Return procedure for MSP430F2001IRSAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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