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Texas Instruments MSP430F1101AIPWR
- Part No.:
- MSP430F1101AIPWR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430F1101AIPWR.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,988
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Product details
Overview
MSP430F1101AIPWR from Texas Instruments is an ultralow-power 16-bit RISC mixed-signal microcontroller featuring 1 KB flash + 128 B RAM, 16-bit Timer_A with three capture/compare registers, on-chip analog comparator, and support for 1.8–3.6 V operation. It delivers 160 μA active current at 1 MHz/2.2 V and wakes from standby in <6 μs-enabling battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430F1101AIPWR datasheet, MSP430F1101AIPWR pinout, MSP430F1101AIPWR application, or MSP430F1101AIPWR equivalent, key selection criteria include flash-based in-system programmability, 14 GPIO (8 on P1, 6 on P2), integrated slope A/D capability via comparator, and compatibility with 32-kHz crystal or internal DCO clocking.
Technical Context
The MSP430F1101AIPWR implements a 16-bit CPU with seven addressing modes and constant generators for high code efficiency. Its basic clock module supports multiple sources: internal DCO (stabilizes in <6 μs), 32-kHz crystal, external resistor, or high-frequency crystal-enabling flexible low-power timing across LPM0–LPM4 modes.
Peripherals include a 16-bit Timer_A3 with three independent capture/compare registers, a comparator supporting analog signal comparison and single-slope A/D conversion, and dual 8-bit I/O ports (P1 fully exposed, P2 limited to six pins). All peripherals are memory-mapped and accessible via standard instructions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125 ns instruction cycle; register-to-register operations execute in one cycle |
| Memory | 1 KB flash + 128 B RAM; flash supports in-system programming via JTAG or BSL UART |
| Supply Voltage | 1.8 V to 3.6 V; flash programming requires ≥2.7 V |
| Active Current | 160 μA at 1 MHz, 2.2 V - enables multi-year coin-cell operation in duty-cycled sensing |
| Standby Current | 0.7 μA at 2.2 V - supports ultra-low-power wake-on-interrupt operation |
| Wake-up Time | <6 μs from LPM3/LPM4 - critical for responsive event-driven sensor sampling |
| Operating Temp | −40°C to +85°C - qualified for industrial and automotive-adjacent environments |
Pinout & Package
Package: 20-pin plastic TSSOP (PW), body width 4.4 mm, JEDEC MO-153 compliant. Pin 1 marked by dot; pin 10 = VSS, pin 20 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK | Timer_A clock input / general I/O | Accepts external clock source for Timer_A; configurable as digital I/O with interrupt |
| P1.1/TA0 | Timer_A CCI0A input / compare output / BSL TX | Primary capture input for Timer_A channel 0; also serves as UART transmit during BSL mode |
| P1.2/TA1 | Timer_A CCI1A input / compare output | Second capture input; supports PWM generation and edge-triggered interrupts |
| P1.3/TA2 | Timer_A CCI2A input / compare output | Third capture input; enables simultaneous timing of three independent events |
| P1.4/SMCLK/TCK | Sub-main clock output / JTAG test clock | Drives SMCLK to peripherals; doubles as TCK for boundary-scan programming and debug |
| P1.5/TA0/TMS | Timer_A compare output / JTAG test mode select | Provides TA0 output signal while enabling JTAG state control during programming |
| P1.6/TA1/TDI/TCLK | Timer_A compare output / JTAG data input / test clock | Supports dual-role debugging and timer functionality without pin conflict |
| P1.7/TA2/TDO/TDI | Timer_A compare output / JTAG data output/input | Enables full JTAG chain visibility and TA2 signal routing in compact layout |
| P2.0/ACLK | Auxiliary clock output / general I/O | Routes 32-kHz ACLK to external circuitry or acts as GPIO with interrupt capability |
| P2.1/INCLK | Timer_A internal clock input | Feeds internal clock signal to Timer_A for synchronized capture/compare operations |
| P2.2/CAOUT/TA0 | Comparator_A output / Timer_A CCI0B input / BSL RX | Delivers comparator result; accepts secondary TA0 input; receives UART data during BSL |
| P2.3/CA0/TA1 | Comparator_A input A / Timer_A CCI1B input | First analog comparator input; also provides alternate TA1 capture path |
| P2.4/CA1/TA2 | Comparator_A input B / Timer_A CCI2B input | Second analog comparator input; enables differential or reference-based comparisons |
| P2.5/ROSC | DCO resistor connection / general I/O | Connects external resistor to set nominal DCO frequency; retains GPIO function when unused |
| RST/NMI | Reset or nonmaskable interrupt input | Hardware reset initiation and fault-handling interrupt; level-sensitive with internal pullup |
| TEST | JTAG test mode enable | Activates JTAG interface and connects to security fuse; must be held low during normal operation |
| VCC | Power supply | Primary supply rail; decoupling capacitor required within 1 cm of pin |
| VSS | Ground reference | Digital ground return; shared with analog subsystem; requires low-impedance PCB plane |
| XIN | Crystal oscillator input | Accepts 32.768 kHz watch crystal or 450 kHz–8 MHz resonator/crystal |
| XOUT | Crystal oscillator output | Completes crystal oscillator loop; internal load capacitance optimized for 12.5 pF |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-power operation | 0.1 μA off-mode (RAM retention) and 0.7 μA standby enable decade-long battery life in intermittent-sensing applications |
| Integrated analog comparator | Supports precision slope A/D conversion on resistive sensors without external ADC, reducing BOM and board space |
| Flash-based programmability | 1 KB flash allows field firmware updates via UART BSL or JTAG-eliminating need for external programmers |
| Five low-power operating modes | LPM0–LPM4 provide granular power control: LPM3 retains ACLK for RTC while cutting CPU/SMCLK; LPM4 disables all clocks |
| 14 GPIO with interrupt capability | All P1 and P2 pins support edge-selectable interrupts, enabling wake-from-sleep on sensor triggers or button presses |
Applications
| Wireless Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity node transmitting data via sub-GHz RF transceiver. IC Role / Device Role / Timing Role: Main controller executing sensor readout, data processing, and RF packet framing; uses ACLK for real-time timestamping and LPM3 for sleep between samples. Use Value: 0.7 μA standby current extends CR2032 life beyond 5 years at 1-minute sampling intervals. | Use Scenario: Handheld pulse oximeter capturing analog photodiode signals and calculating SpO₂. IC Role / Device Role / Timing Role: Signal conditioner and processor using comparator-based slope A/D to digitize analog front-end outputs; Timer_A generates precise LED drive timing. Use Value: Integrated comparator eliminates external ADC, reducing system cost by $0.32 and PCB area by 12 mm². |
| Industrial Equipment Monitor | Smart Utility Meter Interface |
Use Scenario: DIN-rail mounted device monitoring motor voltage/current and reporting anomalies via RS-485. IC Role / Device Role / Timing Role: Fault-detection engine sampling analog inputs via comparator; uses Timer_A capture to measure AC line zero-crossings. Use Value: 16-bit Timer_A resolution (100 ns @ 10 MHz) enables ±0.1% line frequency accuracy over temperature. | Use Scenario: Tamper-resistant meter interface logging energy consumption and detecting magnetic interference. IC Role / Device Role / Timing Role: Security-aware controller running encrypted firmware from flash; uses comparator to monitor Hall-effect sensor for magnet detection. Use Value: Flash security fuse and BSL password protection prevent unauthorized firmware access while maintaining field-upgradability. |
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 |
|---|---|---|---|
| MSP430F1121AIPWR | 4 KB flash + 256 B RAM; same package, pinout, and peripheral set | Supports larger firmware images and more complex sensor fusion algorithms | Select when firmware exceeds 1 KB or additional RAM is needed for buffering |
| MSP430F2131IPW | 1 KB flash + 128 B RAM; enhanced USI module replaces legacy Timer_A; 16-MHz max MCLK | Offers SPI/I2C hardware support but lacks dedicated comparator_A module | Select when serial communication dominates over analog sensing; avoid if slope A/D is required |
Compared with MSP430F1121AIPWR, the MSP430F1101AIPWR trades memory capacity for lower unit cost and identical analog feature set; versus MSP430F2131IPW, it retains the comparator_A essential for resistive sensor interfaces but lacks hardware serial interfaces.
Availability
MSP430F1101AIPWR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, and industrial equipment monitors requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature.
Supply support for MSP430F1101AIPWR 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 MSP430x11x1(A) product line was designed specifically for ultralow-power portable measurement applications-emphasizing extended battery life through aggressive power gating, fast wake-up, and integrated analog peripherals that minimize external components.
FAQ
What is the maximum operating frequency of the MSP430F1101AIPWR at 3.6 V?
The MSP430F1101AIPWR supports a maximum system clock (MCLK) frequency of 8 MHz at 3.6 V. This limit applies when executing code from flash memory and is constrained by both core timing and flash access latency. At lower supply voltages (e.g., 2.2 V), the maximum safe MCLK drops to 4.15 MHz per the recommended operating conditions table in SLAS241I.
Does the MSP430F1101AIPWR support hardware UART or SPI communication?
No, the MSP430F1101AIPWR does not include dedicated hardware UART or SPI peripherals. Serial communication must be implemented via software bit-banging or by repurposing Timer_A outputs and GPIO pins. The bootstrap loader (BSL) provides UART-based flash programming using P1.1 (TX) and P2.2 (RX), but this is not available as a runtime peripheral.
Can the MSP430F1101AIPWR perform analog-to-digital conversion without an external ADC?
Yes-the MSP430F1101AIPWR includes an on-chip Comparator_A module that enables single-slope analog-to-digital conversion on resistive sensors. By charging a capacitor through a sensor and comparing against a reference, the device measures time-to-compare to derive digital values-eliminating the need for external ADC hardware in many low-resolution sensing applications.
What package type is used for the MSP430F1101AIPWR part number?
The MSP430F1101AIPWR uses a 20-pin plastic thin shrink small-outline package (TSSOP), identified by the PW suffix. It has a 0.65 mm lead pitch, 4.4 mm body width, and meets JEDEC MO-153 standards. This package is distinct from the DW (SOWB) and DGV (TVSOP) variants listed for other members of the F11x1A family.
How is flash memory protected against unauthorized access on the MSP430F1101AIPWR?
Flash protection on the MSP430F1101AIPWR is enforced via a JTAG security fuse connected to the TEST pin. Blowing this fuse disables JTAG access permanently. Additionally, the bootstrap loader (BSL) requires a user-defined 32-byte password for UART-based programming-preventing unauthenticated firmware updates. Both mechanisms operate independently and can be deployed together for layered security.
MSP430F1101AIPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430x1xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- 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:
MSP430F1101AIPWR FAQ
1.How can I place an order for MSP430F1101AIPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F1101AIPWR 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 MSP430F1101AIPWR reliable?
The price and inventory of MSP430F1101AIPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F1101AIPWR is usually 5 days.
3.What payment methods are accepted for MSP430F1101AIPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F1101AIPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F1101AIPWR?
MSP430F1101AIPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F1101AIPWR 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 MSP430F1101AIPWR?
For technical support, including MSP430F1101AIPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F1101AIPWR requirements.
6.How does Aetrix verify that MSP430F1101AIPWR is sourced from the original manufacturer or authorized distributors?
All MSP430F1101AIPWR 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 MSP430F1101AIPWR meets industry standards.
7.What is the process for return or replacement of MSP430F1101AIPWR?
All MSP430F1101AIPWR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F1101AIPWR, 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 MSP430F1101AIPWR part is unused and in its original packaging.
Return procedure for MSP430F1101AIPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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