My Inquiry
My Account
Texas Instruments MSP430F2101IDW
- Part No.:
- MSP430F2101IDW
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MSP430F2101IDW.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:375
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430F2101IDW from Texas Instruments is an ultra-low-power 16-bit RISC microcontroller featuring 1 KB Flash + 256 B information memory, 128 B RAM, a 16-bit Timer_A with three capture/compare registers, and an on-chip analog comparator for slope A/D conversion. It operates from 1.8 V to 3.6 V and supports active-mode current of 250 μA at 1 MHz/2.2 V - ideal for battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430F2101IDW datasheet, MSP430F2101IDW pinout, MSP430F2101IDW application, or MSP430F2101IDW equivalent, key selection criteria include its 20-pin DW (SOWB) package, calibrated DCO enabling sub-1-μs wake-up from standby, integrated comparator for analog signal conditioning, and JTAG/BSL programming support without external voltage.
Technical Context
The MSP430F2101IDW implements a 16-bit CPU with constant generators and seven addressing modes, executing register-to-register instructions in one cycle. 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.
Peripheral integration includes two 8-bit I/O ports (P1/P2) with individually programmable pullup/pulldown resistors and edge-selectable interrupts, a Comparator_A+ with eight analog inputs (CA0–CA7), and Timer_A3 supporting PWM, capture, and interval timing. Brownout detection and watchdog timer (WDT+) provide system-level reliability.
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 compact, deterministic firmware for real-time sensor control. |
| Memory | 1 KB Flash (main code) + 256 B information Flash (calibration/BSL keys) + 128 B RAM - sufficient for standalone sensor firmware with calibration data retention. |
| Supply Voltage | 1.8 V to 3.6 V operating range - supports direct connection to single-cell Li-ion or two-cell alkaline batteries without regulation. |
| Active Current | 250 μA at 1 MHz / 2.2 V - extends battery life in continuous-sampling applications such as environmental monitors. |
| Standby Current | 0.7 μA in LPM3 (ACLK active) - enables multi-year operation in intermittently active wireless sensor endpoints. |
| Wake-up Time | <1 μs from LPM3/LPM4 to active mode - critical for responsive event-driven sensing (e.g., motion-triggered data capture). |
| Comparator Inputs | Eight selectable analog inputs (CA0–CA7) - allows flexible routing of external sensor signals (e.g., thermistor, photodiode) for slope ADC or threshold detection. |
Pinout & Package
Package: 20-pin Plastic Small-Outline Wide Body (SOWB), DW suffix - surface-mount, 7.5 mm × 12.8 mm footprint with 0.8 mm lead pitch, optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK | Timer_A clock input / GPIO | Accepts external timing source for precise event synchronization; default digital I/O when not used for TACLK. |
| P1.1/TA0/TDO/TDI | Timer_A compare output / JTAG test data | Provides PWM output or BSL UART transmit; dual-use pin requires careful JTAG vs. peripheral configuration during debug. |
| P2.2/CAOUT/TA0/CA4 | Comparator output / Timer_A input / analog input | Delivers comparator decision signal; also serves as CCI0B capture input or CA4 analog channel - enables hardware-accelerated slope ADC. |
| XIN/P2.6/CA6 | 32-kHz crystal input / analog input | Connects to watch crystal for low-power real-time clock; alternatively routes external analog signal to comparator. |
| RST/NMI | Reset / non-maskable interrupt input | Hardware reset initiation and high-priority fault handling; internal pullup ensures defined state during power-up. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 μA in LPM4 (RAM retention) - preserves volatile context across long sleep intervals while minimizing self-discharge in coin-cell applications. |
| On-chip analog comparator | Supports slope A/D conversion without external ADC - reduces BOM count and PCB area in simple sensor front-ends (e.g., temperature thresholds). |
| Dual programming interfaces | JTAG (MSP-FET430UIF) and UART-based BSL - enables field firmware updates via serial interface without dedicated debug hardware. |
| Calibrated DCO | Four factory-trimmed frequencies (1/8/12/16 MHz) with ±1% accuracy - eliminates need for external crystal in cost-sensitive designs requiring moderate timing precision. |
| Integrated brownout detector | Prevents erratic execution during power ramp-up/down - ensures reliable startup and graceful shutdown in unregulated supply environments. |
Applications
| Smart Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via BLE or sub-GHz radio at 10-second intervals. IC Role / Device Role / Timing Role: Main controller executing sensor readout, digital filtering, and low-power radio wake-up sequencing; uses LPM3 with ACLK from 32-kHz crystal for accurate timing between samples. Use Value: 0.7 μA standby current extends CR2032 battery life beyond 3 years; integrated comparator validates sensor readiness before ADC sampling. |
Use Scenario: Wearable pulse oximeter performing periodic SpO₂ measurements with optical LED drive and photodiode signal conditioning. IC Role / Device Role / Timing Role: Signal acquisition controller managing LED timing, photodiode comparator thresholding, and data logging; leverages Timer_A for precise LED pulse width control. Use Value: Sub-1-μs wake-up ensures immediate response to user button press; 1.8 V minimum supply enables direct use of single LiPo cell. |
| Industrial Equipment Monitor | Asset Tracking Beacon |
Use Scenario: DIN-rail mounted vibration monitor detecting motor bearing faults via accelerometer FFT analysis. IC Role / Device Role / Timing Role: Edge-processing node running lightweight anomaly detection algorithm; uses Flash memory for firmware storage and RAM for coefficient buffers. Use Value: 1 KB Flash accommodates sensor fusion logic and communication stack; brownout protection prevents corruption during unstable AC-DC converter output. |
Use Scenario: GPS-denied indoor asset tracker using RSSI-based proximity detection and periodic BLE beacon transmission. IC Role / Device Role / Timing Role: Low-duty-cycle controller activating UWB or BLE transceiver only during scheduled reporting windows; relies on DCO for fast wake-up timing. Use Value: 250 μA active current at 1 MHz enables 10-ms processing bursts within tight energy budgets; 20-pin SOWB simplifies automated assembly on compact modules. |
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 |
|---|---|---|---|
| MSP430F2111IDW | 2 KB Flash + 128 B RAM, identical peripherals and pinout - adds 1 KB program storage for larger firmware or bootloader space. | Suitable where firmware size exceeds 1 KB or dual-bank updates are required. | Select when future firmware growth or secure OTA update capability is anticipated; same PCB layout and power profile. |
| MSP430G2553IPW28 | 16 KB Flash + 512 B RAM, enhanced USCI module (UART/SPI/I²C), but no integrated comparator; 28-pin TSSOP package. | Better suited for communication-heavy designs requiring protocol stacks, but lacks analog slope ADC capability. | Choose when serial connectivity dominates over analog signal conditioning; requires PCB redesign due to different pin count and package. |
Compared with MSP430F2101IDW, the MSP430F2111IDW offers scalable Flash without altering power or timing behavior, while the MSP430G2553IPW28 trades analog integration for richer digital interfaces and larger memory - making the MSP430F2101IDW optimal for minimal-footprint, analog-centric sensor endpoints.
Availability
MSP430F2101IDW is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, and industrial equipment monitors requiring stable component supply across extended production lifecycles.
Supply support for MSP430F2101IDW 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 expertise in ultra-low-power design.
The MSP430F2101IDW belongs to the MSP430x2xx family - engineered specifically for battery-operated measurement and sensing applications where nanowatt-level power efficiency and integrated analog functionality are critical.
FAQ
What is the maximum operating frequency of the MSP430F2101IDW?
The MSP430F2101IDW supports a maximum MCLK frequency of 16 MHz when VCC ≥3.3 V, with factory-calibrated DCO settings at 1 MHz, 8 MHz, 12 MHz, and 16 MHz (±1%). At 2.7 V, the maximum is 12 MHz, and at 1.8 V, it is limited to 6 MHz per the recommended operating conditions. The MSP430F2101IDW achieves this performance while maintaining ultra-low active current - 250 μA at 1 MHz/2.2 V - making it suitable for applications balancing speed and energy efficiency.
Does the MSP430F2101IDW support in-system programming without external hardware?
Yes, the MSP430F2101IDW supports in-system programming via its built-in Bootstrap Loader (BSL), which operates over UART using P1.1 (TXD) and P2.2 (RXD). No external programming voltage is required - the BSL runs directly from the 1.8–3.6 V supply. Password protection and security fuse options prevent unauthorized access. This capability enables field firmware updates and eliminates dependency on JTAG debuggers for basic reprogramming tasks involving the MSP430F2101IDW.
What analog functions does the MSP430F2101IDW provide?
The MSP430F2101IDW integrates a Comparator_A+ module with eight selectable analog inputs (CA0–CA7), programmable hysteresis, and output routing to Timer_A for slope analog-to-digital conversion. It does not include a dedicated ADC or DAC. The comparator supports battery-voltage supervision, zero-crossing detection, and threshold-based wake-up - delivering analog signal conditioning without external components. This makes the MSP430F2101IDW especially effective in applications like sensor threshold alarms and simple A/D conversion where resolution requirements are modest.
Is the MSP430F2101IDW pin-compatible with other devices in the MSP430F21x1 family?
Yes, the MSP430F2101IDW in the 20-pin DW (SOWB) package shares identical pinout and electrical characteristics with MSP430F2111IDW, MSP430F2121IDW, and MSP430F2131IDW - differing only in Flash/RAM capacity and calibration data. All four variants use the same DW footprint, I/O mapping, and peripheral register layout. This allows hardware reuse across product tiers; for example, a board designed for MSP430F2101IDW can be upgraded to MSP430F2111IDW by reflashing firmware without PCB changes.
What development tools are recommended for the MSP430F2101IDW?
Texas Instruments recommends the MSP-FET430UIF (USB JTAG programmer/debugger) and MSP-TS430DW20 target socket board for hardware development. For software, Code Composer Studio (CCS) and naken430loader (open-source BSL tool) are fully supported. The MSP430F2101IDW's Embedded Emulation Module (EEM) enables advanced debugging features including breakpoints, real-time variable watch, and low-power mode profiling - essential for optimizing energy consumption in battery-powered deployments of the MSP430F2101IDW.
MSP430F2101IDW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Series:
- MSP430F2xx
- Packaging:
- Bulk
- 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:
MSP430F2101IDW FAQ
1.How can I place an order for MSP430F2101IDW through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2101IDW 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 MSP430F2101IDW reliable?
The price and inventory of MSP430F2101IDW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2101IDW is usually 5 days.
3.What payment methods are accepted for MSP430F2101IDW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2101IDW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2101IDW?
MSP430F2101IDW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2101IDW 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 MSP430F2101IDW?
For technical support, including MSP430F2101IDW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2101IDW requirements.
6.How does Aetrix verify that MSP430F2101IDW is sourced from the original manufacturer or authorized distributors?
All MSP430F2101IDW 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 MSP430F2101IDW meets industry standards.
7.What is the process for return or replacement of MSP430F2101IDW?
All MSP430F2101IDW units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2101IDW, 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 MSP430F2101IDW part is unused and in its original packaging.
Return procedure for MSP430F2101IDW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430F2101IDW Tags
-
ATTINY4-TSHR
Microchip Technology
-
ATTINY10-TSHR
Microchip Technology
-
ATTINY10-TS8R
Microchip Technology
-
ATTINY202-SSNR
Microchip Technology
-
ATTINY202-SSFR
Microchip Technology
-
ATTINY402-SSNR
Microchip Technology
-
PIC16F15213T-I/MF
Microchip Technology
-
PIC16F15213-E/MF
Microchip Technology
-
PIC10F200T-I/OT
Microchip Technology
-
ATTINY412-SSNR
Microchip Technology
-
PIC10F202T-I/OT
Microchip Technology
-
ATTINY404-SSNR
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
