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Texas Instruments MSP430F2101IDWR
- Part No.:
- MSP430F2101IDWR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MSP430F2101IDWR.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,317
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Product details
Overview
MSP430F2101IDWR from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 1 KB Flash, 128 B RAM, a 16-bit Timer_A with three capture/compare registers, an on-chip analog comparator for slope A/D conversion, and operation across 1.8 V–3.6 V supply. It targets battery-powered sensor systems requiring sub-1 µs wake-up and long-term energy efficiency.
For engineers reviewing the MSP430F2101IDWR datasheet, MSP430F2101IDWR pinout, MSP430F2101IDWR application, or MSP430F2101IDWR equivalent, key selection criteria include its 20-pin TSSOP (PW) package, -40°C to 85°C industrial temperature grade, integrated DCO with four factory-calibrated frequencies (1/8/12/16 MHz), and JTAG + BSL programming support without external voltage.
Technical Context
The MSP430F2101IDWR implements a 16-bit CPU with constant generators and seven addressing modes, enabling single-cycle register operations and high code efficiency. Its basic clock module integrates a digitally controlled oscillator (DCO), 32-kHz crystal input (XIN/XOUT), and high-frequency crystal support up to 16 MHz - all configurable via BCSCTL registers.
It features two 8-bit I/O ports (P1/P2) with individually programmable pullup/pulldown resistors, edge-selectable interrupts, and peripheral mapping including Timer_A inputs (TACLK, INCLK, CCI0A–CCI2B), comparator inputs (CA0–CA7), and JTAG/BSL signals (TCK/TMS/TDI/TDO) multiplexed on P1 pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and 62.5-ns instruction cycle at 16 MHz |
| Memory | 1 KB Flash + 256 B information memory + 128 B RAM; supports in-system programming via JTAG or UART BSL |
| Power Consumption | 250 µA active @ 1 MHz/2.2 V; 0.7 µA standby; 0.1 µA LPM4 with RAM retention |
| Clock System | Digital-controlled oscillator (DCO) with four factory-calibrated frequencies ±1%; supports 32-kHz crystal and up to 16-MHz HF crystal |
| Peripherals | 16-bit Timer_A3 with three capture/compare registers; Comparator_A+ with eight analog inputs and slope ADC capability |
| Operating Range | -40°C to +85°C; 1.8 V–3.6 V supply; brownout detector and watchdog timer included |
Pinout & Package
Package: 20-pin Plastic Small-Outline Thin (TSSOP), suffix PW - same physical footprint as DW (SOWB) and DGV (TVSOP) variants per TI SLAS439F.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK | Timer_A clock input | Accepts external timing signal for Timer_A; also functions as general-purpose I/O |
| P1.1/TA0/TDI/TCLK | Timer_A compare output / JTAG test data input | Provides TA0 output or serves as JTAG TDI/TCLK during programming and debug |
| P1.4/SMCLK/TCK | Sub-main clock output / JTAG test clock | Drives SMCLK to peripherals or acts as JTAG TCK; enables synchronous debugging |
| P2.0/ACLK/CA2 | Auxiliary clock output / comparator input | Routes 32-kHz ACLK to modules or feeds CA2 to comparator for low-frequency sensing |
| XIN/P2.6/CA6 | Crystal oscillator input / comparator input | Connects to 32-kHz watch crystal or external clock source; doubles as analog input CA6 |
| RST/NMI | Reset or non-maskable interrupt | Active-low reset initiation; also accepts NMI events for critical fault handling |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-fast wake-up | Sub-1 µs transition from LPM4 to active mode using DCO - enables burst-sensing duty cycles |
| On-chip analog comparator | Supports slope-based analog-to-digital conversion without external ADC; reduces BOM cost and board space |
| Bootstrap loader (BSL) | UART-based flash programming with password protection and security key disable option (0xAA55) |
| Five low-power modes | LPM0–LPM4 with selective clock gating - allows fine-grained power optimization per system state |
| JTAG + Spy-Bi-Wire | Embedded Emulation Module (EEM) enables full-speed debugging and flash programming via MSP-FET430UIF |
Applications
| Wireless Sensor Node | Battery-Powered Data Logger |
|---|---|
Use Scenario: Compact environmental sensor node transmitting temperature/humidity over sub-GHz RF link with multi-year battery life. IC Role / Device Role / Timing Role: Primary MCU managing sensor acquisition, slope ADC via Comparator_A+, RF interface control, and ultra-low-power sleep scheduling. Use Value: 0.1 µA LPM4 current extends CR2032 battery life beyond 5 years; sub-1 µs wake-up ensures precise timing for RF packet transmission windows. | Use Scenario: Portable industrial logger recording vibration, voltage, and current at 100 Hz intervals onto internal Flash memory. IC Role / Device Role / Timing Role: Central controller executing timed sampling, storing raw data in Flash, and supporting field firmware updates via BSL UART. Use Value: Integrated 1 KB Flash eliminates external memory; calibrated DCO enables accurate 100-Hz sampling without external crystal. |
| Smart Meter Interface Module | Low-Cost Industrial Controller |
Use Scenario: Auxiliary metering module monitoring auxiliary power rails and communicating via isolated UART to main meter MCU. IC Role / Device Role / Timing Role: Standalone measurement unit performing analog supervision (via Comparator_A+), brownout detection, and secure firmware updates. Use Value: Brownout detector prevents erratic behavior during grid sags; BSL password protection secures field updates against unauthorized access. | Use Scenario: DIN-rail mounted HVAC controller reading thermistors, driving relays, and maintaining real-time clock via 32-kHz crystal. IC Role / Device Role / Timing Role: Real-time embedded controller using Timer_A for PWM fan control and ACLK-driven RTC with crystal accuracy. Use Value: Factory-calibrated DCO provides stable 12-MHz MCLK for deterministic control loops; XIN/XOUT pins simplify crystal integration. |
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 |
|---|---|---|---|
| MSP430F2111IPW | 2 KB Flash, 128 B RAM - double program memory; identical pinout and peripherals | Suitable for applications requiring larger firmware (e.g., BLE stack integration or expanded sensor fusion) | Select when future firmware growth or bootloader complexity demands >1 KB Flash |
| MSP430G2231IPW | 1 KB Flash, 128 B RAM, but lacks factory DCO calibration; requires external crystal for precision timing | Better suited for cost-sensitive designs where ±1% DCO tolerance is acceptable or crystal is already present | Choose for lower BOM cost where factory-calibrated DCO is not required for timing-critical functions |
Compared with MSP430F2101IDWR, MSP430F2111IPW offers scalable code space without layout change, while MSP430G2231IPW trades DCO calibration for reduced cost - making the MSP430F2101IDWR optimal for time-sensitive, battery-constrained sensor nodes needing guaranteed startup timing and minimal external components.
Availability
MSP430F2101IDWR is available at Aetrix Electronics and suitable for wireless sensor nodes, battery-powered data loggers, and smart meter interface modules requiring stable component supply and long-term industrial availability.
Supply support for MSP430F2101IDWR 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 for industrial, automotive, and consumer markets.
The MSP430F2101IDWR belongs to the MSP430x21x1 ultra-low-power mixed-signal microcontroller family, designed specifically for portable measurement and battery-operated sensor applications demanding extended runtime and rapid wake-up response.
FAQ
What is the maximum operating frequency of the MSP430F2101IDWR?
The MSP430F2101IDWR supports a maximum system clock (MCLK) frequency of 16 MHz when VCC ≥ 3.3 V, enabled by its factory-calibrated DCO. At 2.7 V, the maximum is 12 MHz, and at 1.8 V it is limited to 6 MHz per TI SLAS439F. This frequency governs CPU execution speed, Timer_A timing resolution, and peripheral throughput - all directly tied to supply voltage and DCO calibration settings stored in Flash segment A.
Does the MSP430F2101IDWR support in-system programming without external hardware?
Yes, the MSP430F2101IDWR supports in-system programming via its built-in bootstrap loader (BSL), accessible through UART using P1.1 (TXD) and P2.2 (RXD). No external programmer is needed if the BSL is enabled and a valid password is supplied. The BSL can be disabled permanently using the security key 0xAA55 written to address 0xFFDE, ensuring firmware integrity in deployed units.
What package type does the MSP430F2101IDWR use, and is it pin-compatible with other MSP430F21x1 variants?
The MSP430F2101IDWR uses a 20-pin TSSOP (PW) package. It is pin-compatible with the MSP430F2101IDW (SOWB) and MSP430F2101IDGV (TVSOP) variants - all share identical pin numbering, signal mapping, and electrical characteristics per TI's SLAS439F datasheet. This allows direct PCB footprint reuse across these packages for manufacturing flexibility or thermal optimization.
How does the analog comparator in the MSP430F2101IDWR enable slope A/D conversion?
The MSP430F2101IDWR's Comparator_A+ module enables slope A/D conversion by charging a capacitor at a known current and measuring the time required for its voltage to cross a reference threshold using the comparator output. The 16-bit Timer_A captures this time interval, converting it into a digital value proportional to input voltage - eliminating need for external ADC while achieving ~10-bit effective resolution with software calibration.
What low-power modes are available on the MSP430F2101IDWR, and how do they differ?
The MSP430F2101IDWR offers six operating modes: Active Mode (AM) and five low-power modes (LPM0–LPM4). LPM0–LPM1 retain SMCLK/ACLK but disable CPU; LPM2–LPM3 disable SMCLK/MCLK but keep ACLK active; LPM4 disables all clocks including ACLK and stops the crystal oscillator. Current drops from 250 µA (AM @ 1 MHz) to 0.1 µA (LPM4), with RAM retention maintained in all modes except full reset - enabling flexible power-state management for intermittent sensing tasks.
MSP430F2101IDWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Series:
- MSP430F2xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- -
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 16
- 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:
MSP430F2101IDWR FAQ
1.How can I place an order for MSP430F2101IDWR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2101IDWR 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 MSP430F2101IDWR reliable?
The price and inventory of MSP430F2101IDWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2101IDWR is usually 5 days.
3.What payment methods are accepted for MSP430F2101IDWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2101IDWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2101IDWR?
MSP430F2101IDWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2101IDWR 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 MSP430F2101IDWR?
For technical support, including MSP430F2101IDWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2101IDWR requirements.
6.How does Aetrix verify that MSP430F2101IDWR is sourced from the original manufacturer or authorized distributors?
All MSP430F2101IDWR 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 MSP430F2101IDWR meets industry standards.
7.What is the process for return or replacement of MSP430F2101IDWR?
All MSP430F2101IDWR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2101IDWR, 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 MSP430F2101IDWR part is unused and in its original packaging.
Return procedure for MSP430F2101IDWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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