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Texas Instruments MSP430F1101IDW
- Part No.:
- MSP430F1101IDW
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MSP430F1101IDW.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:919
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Product details
Overview
MSP430F1101IDW from Texas Instruments is an ultralow-power 16-bit RISC mixed-signal microcontroller featuring 1KB flash memory, 128B RAM, a 16-bit Timer_A with three capture/compare registers, an on-chip analog comparator, and fourteen I/O pins. It operates from 1.8 V to 3.6 V, achieves 160 μA active current at 1 MHz/2.2 V, and wakes from standby in under 6 μs - enabling battery-powered sensor signal acquisition and processing in portable measurement systems.
For engineers reviewing the MSP430F1101IDW datasheet, MSP430F1101IDW pinout, MSP430F1101IDW application, or MSP430F1101IDW equivalent, key selection considerations include its 20-pin DW (SOWB) package, flash-based programmability without external voltage, integrated slope A/D capability via I/O resistive sensing, and support for multiple clock sources including 32-kHz crystal and internal DCO.
Technical Context
The MSP430F1101IDW implements a 16-bit RISC CPU with constant generators and seven addressing modes, executing register operations in one CPU cycle. Its basic clock module supports ACLK (32-kHz crystal), SMCLK (DCO or crystal), and MCLK (system clock), with DCO stabilization in <6 μs - enabling rapid wake-up from LPM3 (0.7 μA) and LPM4 (0.1 μA) low-power modes.
Peripherals include two 8-bit I/O ports (P1 with eight pins, P2 with six externally accessible pins), a Comparator_A for battery supervision and slope A/D conversion, and Timer_A3 with three independent capture/compare registers supporting PWM, interval timing, and input capture with interrupt capability on overflow and each CCR.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generators; enables single-cycle register operations and high code efficiency. |
| Memory | 1KB flash program memory + 128B RAM; supports in-system programming via JTAG or BSL UART without external VPP. |
| Supply Voltage | 1.8 V to 3.6 V operating range; allows direct use with single-cell Li-ion or dual-cell alkaline batteries. |
| Active Current | 160 μA at 1 MHz / 2.2 V; enables multi-year operation in duty-cycled sensor nodes running at sub-1MHz system frequency. |
| Low-Power Modes | LPM3 draws 0.7 μA (25°C), LPM4 draws 0.1 μA (25°C); retains RAM while disabling all clocks - ideal for long-duration sleep between sensor reads. |
| Wake-Up Time | <6 μs from LPM3/LPM4 to active mode; ensures timely response to external interrupts without missing fast transient events. |
| Timer Resources | 16-bit Timer_A3 with three capture/compare registers (TACCR0–2); supports simultaneous PWM generation, input capture, and interval timing with independent interrupt vectors. |
Pinout & Package
Package: 20-pin Plastic Small-Outline Wide Body (SOWB), DW suffix, 0.600-inch body width, surface-mount compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Primary 1.8–3.6 V supply rail; requires local decoupling capacitor for stable core and peripheral operation. |
| VSS | Ground reference | System ground return; must be low-impedance connection to minimize noise coupling into analog peripherals. |
| RST/NMI | Reset or nonmaskable interrupt input | Active-low reset pin; also accepts NMI events; internal pullup enabled after power-on reset. |
| XIN / XOUT | Crystal oscillator terminals | Supports 32.768 kHz watch crystal for ACLK; external load capacitors required per crystal manufacturer specs. |
| P1.0–P1.7 | Port 1 bidirectional I/O | Eight fully configurable digital I/O pins; all support edge-selectable interrupts and can serve as Timer_A inputs/outputs or JTAG signals. |
| P2.0–P2.5 | Port 2 bidirectional I/O | Six externally accessible I/O pins; P2.2–P2.4 double-function as comparator inputs/outputs; P2.5 serves as DCO resistor input (ROSC). |
| TEST | JTAG test mode select | Enables JTAG debugging and programming when pulled high during power-up; connects to JTAG fuse for security lock. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-power operation | 0.1 μA in LPM4 with RAM retention enables decade-scale battery life in intermittently active sensor nodes. |
| Integrated analog comparator | Comparator_A supports precision slope A/D conversion using external RC networks - eliminating need for external ADC in simple threshold-detection applications. |
| Flash memory with BSL | On-chip 1KB flash supports field firmware updates via UART BSL using only P1.1 (TX) and P2.2 (RX), no debugger required. |
| Digital-controlled oscillator (DCO) | Internal DCO stabilizes in <6 μs and provides calibrated clock source - eliminates external crystal for cost-sensitive timing applications where ±3% accuracy suffices. |
| Multiple clock domains | Independent ACLK (low-frequency), SMCLK (peripheral), and MCLK (CPU) enable fine-grained power gating - peripherals run at optimal speed while CPU sleeps. |
Applications
| Wireless Sensor Node | Battery-Powered Data Logger |
|---|---|
Use Scenario: Compact environmental sensor node measuring temperature/humidity and transmitting data via sub-GHz RF transceiver on scheduled intervals. IC Role / Device Role / Timing Role: MSP430F1101IDW acts as main controller and analog front-end processor - acquiring sensor signals via comparator-based slope A/D, managing sleep/wake cycles, and driving RF interface. Use Value: 0.1 μA LPM4 current extends CR2032 battery life beyond 5 years at 1-minute wake-up interval; integrated DCO eliminates crystal BOM cost. | Use Scenario: Standalone industrial logger recording voltage, current, or vibration data onto EEPROM/FRAM at fixed intervals over months. IC Role / Device Role / Timing Role: MSP430F1101IDW serves as timing-critical data acquisition engine - triggering ADC-like conversions via comparator, timestamping samples using Timer_A, and managing nonvolatile storage writes. Use Value: Sub-6 μs wake-up ensures precise sample alignment; 1KB flash stores firmware and calibration tables; 128B RAM buffers burst data before storage. |
| Portable Medical Monitor | Smart Utility Meter Sensor Interface |
Use Scenario: Wearable pulse oximeter or glucose monitor requiring low-noise analog sensing and minimal power draw between measurements. IC Role / Device Role / Timing Role: MSP430F1101IDW performs analog signal conditioning and threshold detection using Comparator_A, controls LED drivers, and manages user interface via GPIO. Use Value: Schmitt-trigger inputs on P1/P2 reject EMI in clinical environments; 0.7 μA LPM3 supports 10-second measurement intervals with >2-year coin-cell operation. | Use Scenario: Tamper-resistant utility meter subsystem monitoring voltage sag/swell, neutral current imbalance, or temperature drift in meter head. IC Role / Device Role / Timing Role: MSP430F1101IDW functions as dedicated analog supervisor - continuously comparing sensed values against reference thresholds using Comparator_A and latching faults to nonvolatile memory. Use Value: Flash memory stores tamper logs and calibration offsets; security fuse prevents unauthorized firmware access; 20-pin DW package fits constrained meter PCB real estate. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultralow-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F1121AIDW | 4KB flash, 256B RAM, same 20-pin DW package and peripheral set; higher memory capacity but identical power profile and instruction set. | Required when firmware exceeds 1KB or additional RAM is needed for larger buffers or protocol stacks. | Select MSP430F1121AIDW if future firmware growth or enhanced data logging capability is anticipated; pin-compatible upgrade path. |
| MSP430F2131IPW | 2KB flash, 128B RAM, 20-pin TSSOP (PW); adds USCI module for UART/SPI/I2C, improved DCO accuracy, and enhanced ADC features - not present in MSP430F1101IDW. | Suitable for designs needing serial communication or higher-precision timing, but requires layout change due to different package and pinout. | Choose MSP430F2131IPW when serial interface or better clock stability is mandatory; not drop-in - verify pin mapping and firmware adaptation. |
Compared with MSP430F1101IDW, MSP430F1121AIDW offers scalable memory within identical power and footprint constraints, while MSP430F2131IPW introduces communication peripherals at the cost of package incompatibility and higher active current - making the former ideal for memory-constrained upgrades and the latter for feature-expanded redesigns.
Availability
MSP430F1101IDW is available at Aetrix Electronics and suitable for wireless sensor nodes, battery-powered data loggers, portable medical monitors, and smart utility meter sensor interfaces requiring stable component supply across extended production lifecycles.
Supply support for MSP430F1101IDW 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 broad industrial and automotive design expertise.
The MSP430x1xx family - including MSP430F1101IDW - was engineered specifically for ultralow-power portable measurement applications, emphasizing extended battery life through aggressive low-power mode optimization and integrated analog signal conditioning.
FAQ
What is the maximum system clock frequency supported by the MSP430F1101IDW?
The MSP430F1101IDW supports up to 8 MHz MCLK at 3.6 V and 4.15 MHz at 1.8 V, as specified in the recommended operating conditions. This frequency applies when using the internal DCO or external crystal/resonator sources. The device does not include a PLL, so system clock is limited to oscillator or DCO output rates - sufficient for sensor interfacing and low-speed control tasks without demanding computational loads.
Does the MSP430F1101IDW support in-system programming without external hardware?
Yes, the MSP430F1101IDW supports in-system programming via its built-in Bootstrap Loader (BSL), which uses UART communication on P1.1 (TX) and P2.2 (RX). No external programming voltage is required, and the BSL is accessible even after flash protection fuses are set - provided the correct password is supplied. This enables field firmware updates using only a UART interface and host PC software.
How many I/O pins are available on the MSP430F1101IDW in the DW package?
The MSP430F1101IDW in the 20-pin DW (SOWB) package provides fourteen functional I/O pins: eight on Port 1 (P1.0–P1.7) and six on Port 2 (P2.0–P2.5). Although Port 2 has eight internal bits, only P2.0 through P2.5 are bonded out to package pins. All fourteen pins are individually configurable as inputs, outputs, or peripheral functions including Timer_A signals and comparator interfaces.
What low-power modes are available on the MSP430F1101IDW, and what is the lowest current draw?
The MSP430F1101IDW offers six operating modes: Active Mode and five low-power modes (LPM0–LPM4). The lowest current draw is 0.1 μA in LPM4 at 25°C with RAM retention enabled and all clocks disabled - verified per SLAS241I electrical characteristics table. This mode halts the crystal oscillator and DCO, making it ideal for long-duration sleep periods in energy-harvesting or battery-critical applications.
Is the MSP430F1101IDW pin-compatible with other devices in the MSP430F11x1A series?
Yes, the MSP430F1101IDW is pin-compatible with other members of the MSP430F11x1A series offered in the same DW package - including MSP430F1111AIDW and MSP430F1121AIDW. They share identical pinouts, electrical characteristics, and peripheral mappings; only flash size (1KB/2KB/4KB) and RAM (128B/256B) differ. This allows hardware reuse across firmware variants without PCB changes.
MSP430F1101IDW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Series:
- MSP430x1xx
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- -
- Peripherals:
- POR, WDT
- Number of I/O:
- 14
- 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:
MSP430F1101IDW FAQ
1.How can I place an order for MSP430F1101IDW through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F1101IDW 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 MSP430F1101IDW reliable?
The price and inventory of MSP430F1101IDW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F1101IDW is usually 5 days.
3.What payment methods are accepted for MSP430F1101IDW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F1101IDW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F1101IDW?
MSP430F1101IDW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F1101IDW 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 MSP430F1101IDW?
For technical support, including MSP430F1101IDW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F1101IDW requirements.
6.How does Aetrix verify that MSP430F1101IDW is sourced from the original manufacturer or authorized distributors?
All MSP430F1101IDW 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 MSP430F1101IDW meets industry standards.
7.What is the process for return or replacement of MSP430F1101IDW?
All MSP430F1101IDW units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F1101IDW, 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 MSP430F1101IDW part is unused and in its original packaging.
Return procedure for MSP430F1101IDW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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