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Texas Instruments MSP430F1111AIPW
- Part No.:
- MSP430F1111AIPW
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430F1111AIPW.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,223
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Product details
Overview
MSP430F1111AIPW from Texas Instruments is an ultralow-power 16-bit RISC mixed-signal microcontroller featuring 2KB flash + 256B information memory, 128B RAM, 14 I/O pins, a 16-bit Timer_A with three capture/compare registers, and an on-chip analog comparator. It operates from 1.8 V to 3.6 V and supports wake-up from standby in under 6 μs - ideal for battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430F1111AIPW datasheet, MSP430F1111AIPW pinout, MSP430F1111AIPW application, or MSP430F1111AIPW equivalent, key selection criteria include flash memory size (2KB), standby current (0.7 μA), 20-pin TSSOP package compatibility, and integrated slope A/D conversion capability via the comparator.
Technical Context
The MSP430F1111AIPW implements a 16-bit RISC 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 support, and selectable internal resistors - all optimized for sub-6-μs wake-up from LPM3/LPM4.
It features two 8-bit I/O ports (P1 with 8 pins, P2 with 6 externally accessible pins), JTAG debugging, and a bootstrap loader (BSL) accessible via UART on P1.1/TX and P2.2/RX. The Comparator_A module enables precision slope A/D conversion and battery voltage supervision without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125 ns instruction cycle time and constant generators for optimized code density |
| Memory | 2KB flash program memory + 256B information memory + 128B RAM - supports in-system programming and BSL-based field updates |
| Supply Voltage | 1.8 V to 3.6 V - enables direct operation from single-cell Li-ion or alkaline batteries |
| Active Current | 160 μA at 1 MHz, 2.2 V - defines baseline power budget for continuous sensing tasks |
| Standby Current | 0.7 μA at 2.2 V - sets minimum energy draw during sleep between sensor readings |
| Wake-up Time | <6 μs from LPM3/LPM4 - ensures responsive event-driven operation in low-duty-cycle applications |
| Timer Resources | 16-bit Timer_A3 with three capture/compare registers - supports PWM generation, input capture, and interval timing simultaneously |
Pinout & Package
Package: 20-pin Plastic Thin Shrink Small-Outline Package (TSSOP), PW suffix, body width 4.4 mm, lead pitch 0.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Power supply input | Primary 1.8–3.6 V supply rail; decoupling capacitor required near pin |
| VSS | Ground reference | System ground return; must be low-impedance connection to minimize noise coupling |
| RST/NMI | Reset or nonmaskable interrupt input | Pull-up required externally; triggers power-on reset or emergency interrupt on falling edge |
| XIN / XOUT | Crystal oscillator terminals | Supports 32.768 kHz watch crystal for real-time clock or higher-frequency crystals up to 8 MHz |
| P1.0–P1.7 | Port 1 bidirectional I/O | Eight general-purpose pins with individually configurable direction, pull-up/down, and interrupt edge select |
| P2.0–P2.5 | Port 2 bidirectional I/O | Six externally accessible pins supporting ACLK output, INCLK input, comparator inputs (CA0/CA1), and TA0–TA2 outputs |
| TEST | JTAG test mode select | Enables JTAG interface for programming and debug; tied high during normal operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-power operation | 0.1 μA off-mode (RAM retention) and 0.7 μA standby enable multi-year battery life in intermittent-sensing applications |
| Integrated analog comparator | Supports slope A/D conversion on resistive sensors - eliminates need for external ADC in simple threshold-detection systems |
| On-chip programmable flash | 2KB flash memory allows firmware updates in-system via JTAG or UART-based BSL without external programmers |
| Five low-power modes | LPM0–LPM4 provide granular control over clock gating and peripheral activation to match real-time latency vs. energy trade-offs |
| 16-bit Timer_A3 | Three independent capture/compare registers enable simultaneous PWM generation, pulse-width measurement, and periodic interrupts |
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 polling, data preprocessing, and RF packet scheduling; uses ACLK from 32.768 kHz crystal for precise timing. Use Value: 0.7 μA standby current extends coin-cell life beyond 5 years at 1-minute wake intervals. | Use Scenario: Wearable pulse oximeter capturing analog photodiode signals and calculating SpO₂ in real time. IC Role / Device Role / Timing Role: Signal acquisition controller using Comparator_A for slope A/D conversion of analog front-end output. Use Value: Integrated comparator eliminates external ADC, reducing BOM cost and PCB area by 30%. |
| Smart Utility Meter | Industrial Condition Monitor |
Use Scenario: Tamper-resistant electricity meter logging voltage/current samples and communicating via PLC or RF mesh. IC Role / Device Role / Timing Role: Secure host processor managing flash encryption keys, watchdog supervision, and secure boot via BSL password protection. Use Value: Programmable security fuse prevents unauthorized firmware access while enabling field firmware upgrades. | Use Scenario: Vibration sensor mounted on motor housing, detecting bearing faults via FFT-accelerated analysis. IC Role / Device Role / Timing Role: Edge-processing node performing time-domain sampling and feature extraction before wireless transmission. Use Value: 16-bit Timer_A3 captures precise timestamped samples at 10 kHz, enabling accurate frequency-domain analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F1121AIPW | 4KB flash + 256B RAM vs. 2KB + 128B; identical package and peripheral set | Supports larger firmware images and more complex algorithms without external memory | Select when firmware exceeds 2KB or requires extended data logging buffers |
| MSP430F2131IPW | Enhanced USCI module (UART/SPI/I²C), 16KB flash, 512B RAM; same 20-pin TSSOP package | Enables direct communication with digital sensors and host processors without level-shifting or bridge ICs | Select when serial connectivity (I²C/SPI) or >2KB code space is required |
Compared with MSP430F1111AIPW, the F1121AIPW offers double flash capacity for firmware growth, while the F2131IPW adds hardware serial interfaces and quadruple flash - both retain the same low-power profile and pinout but target different scalability and connectivity needs.
Availability
MSP430F1111AIPW is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, smart utility meters, and industrial condition monitors requiring stable component supply and long-term production continuity.
Supply support for MSP430F1111AIPW 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 MSP430x11x1(A) product line was engineered specifically for ultralow-power portable measurement and sensing applications - prioritizing sub-μA standby, fast wake-up, and integrated analog peripherals to minimize external component count.
FAQ
What is the maximum operating frequency of the MSP430F1111AIPW at 3.6 V?
The MSP430F1111AIPW 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 voltage and temperature ratings per the SLAS241I datasheet. Higher frequencies require external clock sources or voltage scaling not supported by this device family.
Does the MSP430F1111AIPW support hardware UART communication?
No, the MSP430F1111AIPW does not include a hardware UART peripheral. Serial communication is implemented via software bit-banging or the Bootstrap Loader (BSL) using Timer_A and GPIO pins (P1.1 for TX, P2.2 for RX). For dedicated UART support, consider the MSP430F2131IPW or later generations with USCI modules.
How many I/O pins are available on the MSP430F1111AIPW in the 20-pin TSSOP package?
The MSP430F1111AIPW provides 14 usable I/O pins in the 20-pin TSSOP (PW) package: Port 1 offers 8 pins (P1.0–P1.7), and Port 2 offers 6 externally accessible pins (P2.0–P2.5). Pins P2.6 and P2.7 are not bonded out in this package variant and are unavailable for use.
Can the MSP430F1111AIPW perform analog-to-digital conversion without an external ADC?
Yes, the MSP430F1111AIPW can perform analog-to-digital conversion using its integrated Comparator_A module in slope A/D mode. This technique converts analog voltage to digital values by measuring charge/discharge time across a known capacitor - no external ADC is required for basic threshold detection or slow-sampling applications.
What is the purpose of the TEST pin on the MSP430F1111AIPW?
The TEST pin on the MSP430F1111AIPW enables JTAG interface functionality for programming and debugging. When pulled high during power-up, it activates the JTAG state machine on Port 1 pins (TCK, TMS, TDI/TDO). It also connects to the JTAG security fuse - blowing this fuse disables further JTAG access to protect firmware intellectual property.
MSP430F1111AIPW Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430x1xx
- Packaging:
- Bulk
- 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:
- 2KB (2K 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:
MSP430F1111AIPW FAQ
1.How can I place an order for MSP430F1111AIPW through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F1111AIPW 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 MSP430F1111AIPW reliable?
The price and inventory of MSP430F1111AIPW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F1111AIPW is usually 5 days.
3.What payment methods are accepted for MSP430F1111AIPW?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F1111AIPW transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F1111AIPW?
MSP430F1111AIPW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F1111AIPW 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 MSP430F1111AIPW?
For technical support, including MSP430F1111AIPW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F1111AIPW requirements.
6.How does Aetrix verify that MSP430F1111AIPW is sourced from the original manufacturer or authorized distributors?
All MSP430F1111AIPW 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 MSP430F1111AIPW meets industry standards.
7.What is the process for return or replacement of MSP430F1111AIPW?
All MSP430F1111AIPW units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F1111AIPW, 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 MSP430F1111AIPW part is unused and in its original packaging.
Return procedure for MSP430F1111AIPW:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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