My Inquiry
My Account
Texas Instruments MSP430F1111AIDWR
- Part No.:
- MSP430F1111AIDWR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MSP430F1111AIDWR.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,912
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430F1111AIDWR from Texas Instruments is an ultralow-power 16-bit RISC mixed-signal microcontroller featuring 2KB flash + 256B information memory, 128B RAM, a 16-bit Timer_A with three capture/compare registers, on-chip analog comparator, and 14 programmable I/O pins. It operates from 1.8 V to 3.6 V and supports wake-up from standby mode in under 6 μs - ideal for battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430F1111AIDWR datasheet, MSP430F1111AIDWR pinout, MSP430F1111AIDWR application, or MSP430F1111AIDWR equivalent, key selection criteria include active-mode current at 1 MHz (≤200 μA @ 2.2 V), LPM3 standby current (≤1.0 μA @ 25°C), flash programming voltage requirement (≥2.7 V), 20-pin DW package compatibility, and JTAG/BSL debug interface support.
Technical Context
The MSP430F1111AIDWR implements a 16-bit CPU with seven addressing modes and constant generators for high code efficiency. Its basic clock module integrates a digitally controlled oscillator (DCO), 32-kHz crystal input (XIN/XOUT), and external resistor option (ROSC) - enabling sub-6-μs wake-up from LPM3/LPM4 and flexible low-power clocking.
Peripherals include a 16-bit Timer_A3 with three independent capture/compare registers supporting PWM, interval timing, and event capture; a comparator_A module for slope A/D conversion and battery monitoring; and dual 8-bit I/O ports (P1 with 8 pins, P2 with 6 accessible pins), all with individually configurable direction, interrupt enable, and edge select.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125 ns instruction cycle; register-to-register execution in one cycle |
| Memory | 2KB flash main memory + 256B information memory + 128B RAM; supports in-system programming via JTAG or BSL |
| Supply Voltage | 1.8 V to 3.6 V operating range; flash program/erase requires ≥2.7 V |
| Power Consumption | Active mode: ≤200 μA @ 1 MHz, 2.2 V; LPM3: ≤1.0 μA @ 25°C; LPM4: ≤0.5 μA @ 25°C |
| Wake-up Time | ≤6 μs from LPM3/LPM4 to active mode using DCO clock |
| Timer & Analog | 16-bit Timer_A3 with three capture/compare registers; comparator_A with two analog inputs (CA0/CA1) and output (CAOUT) |
| I/O Capability | 14 total I/O pins (P1.0–P1.7, P2.0–P2.5); all support interrupt with edge-selectable trigger |
Pinout & Package
Package: 20-pin Plastic Small-Outline Wide Body (SOWB), DW suffix, body width 7.5 mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VSS | Ground reference | Primary digital ground connection; must be low-impedance for stable operation |
| VCC | Supply voltage | 1.8–3.6 V power input; decoupling capacitor required near pin |
| RST/NMI | Reset or nonmaskable interrupt input | Active-low reset; also serves as NMI source when configured |
| XIN / XOUT | Crystal oscillator input/output | Supports 32.768 kHz watch crystal for ACLK; internal load caps enabled |
| P1.0–P1.7 | Port 1 bidirectional I/O | Eight pins with interrupt capability; P1.0–P1.5 support Timer_A functions (TACLK, TA0–TA2) |
| P2.0–P2.5 | Port 2 bidirectional I/O | Six pins with interrupt capability; P2.0/ACLK, P2.1/INCLK, P2.2–P2.4 support comparator and Timer_A |
| TEST | JTAG test mode select | Enables JTAG interface; tied high during normal operation; connects to JTAG fuse |
| P2.5/ROSC | External resistor input | Connects to external resistor to set DCO nominal frequency; enables fast wake-up without crystal |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-power operation | Sub-1 μA LPM3 current enables multi-year battery life in intermittent-sensing applications |
| Dual clock system | Independent ACLK (32 kHz crystal), SMCLK (DCO or crystal), and MCLK (CPU clock) allow optimized peripheral timing |
| Integrated analog comparator | Supports single-slope A/D conversion on resistive sensors without external ADC |
| On-chip debug interface | JTAG + BSL enables full flash programming and debugging via UART or 4-wire interface |
| Flexible I/O configuration | All 14 I/O pins support individual direction control, pullup/down disable, and interrupt edge selection |
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, low-duty-cycle RF transmission, and deep-sleep scheduling. Use Value: LPM4 current ≤0.5 μA extends coin-cell lifetime beyond 5 years; 6-μs wake-up ensures precise timing for RF preamble detection. | Use Scenario: Wearable pulse oximeter capturing analog photodiode signals and calculating SpO₂ in real time. IC Role / Device Role / Timing Role: Analog front-end controller performing comparator-based slope A/D on photodiode outputs and driving LED timing. Use Value: On-chip comparator_A eliminates external ADC; 128B RAM holds waveform buffers; 1.8 V operation enables direct Li-ion cell interfacing. |
| Industrial Asset Tracker | Smart Utility Meter Sensor Interface |
Use Scenario: GPS-denied indoor asset tag detecting motion, temperature drift, and tamper events. IC Role / Device Role / Timing Role: Event-driven controller sampling accelerometer, thermistor, and reed switch inputs; triggering BLE beacon only on state change. Use Value: Edge-selectable interrupts on all 14 I/O pins reduce polling overhead; 2KB flash stores firmware + calibration tables. | Use Scenario: Sub-metering module interfacing with current transformers and optical port for utility data logging. IC Role / Device Role / Timing Role: Isolated sensor interface managing CT signal conditioning, optical UART communication, and secure flash storage of metering logs. Use Value: BSL-enabled field firmware updates over optical port; 256B information memory stores unique device ID and calibration coefficients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F1121AIDWR | 4KB flash + 256B RAM; identical pinout, peripherals, and power profile | Supports larger firmware (e.g., BLE stack + sensor fusion) without external memory | Select when firmware size exceeds 2KB or future scalability is required |
| MSP430F2131IPW | 2KB flash + 128B RAM; 20-pin TSSOP (PW); enhanced USCI module replaces legacy USART | Lacks comparator_A but adds UART/SPI/I²C; higher active current (220 μA @ 1 MHz) | Select when serial connectivity outweighs analog sensing needs and TSSOP is preferred |
Compared with MSP430F1121AIDWR, the MSP430F1111AIDWR trades flash capacity for cost-sensitive designs where firmware fits within 2KB; versus MSP430F2131IPW, it retains analog comparator functionality critical for slope A/D while offering lower standby current and proven reliability in long-life deployments.
Availability
MSP430F1111AIDWR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, and industrial asset trackers requiring stable component supply across extended production lifecycles.
Supply support for MSP430F1111AIDWR 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 targets ultralow-power portable measurement applications, emphasizing extended battery life through aggressive low-power modes, integrated analog peripherals, and rapid wake-up capability.
FAQ
What is the minimum supply voltage required to program flash memory on the MSP430F1111AIDWR?
The MSP430F1111AIDWR requires a minimum VCC of 2.7 V during flash memory programming or erase operations, as specified in the recommended operating conditions. Operating below this threshold risks incomplete or corrupted flash writes. The device functions normally at 1.8 V for code execution, but flash programming must occur within the 2.7–3.6 V window. Always verify VCC stability during BSL or JTAG programming sequences.
Does the MSP430F1111AIDWR support crystal oscillators above 32.768 kHz?
Yes, the MSP430F1111AIDWR supports high-frequency crystals up to 8 MHz via the XT1 oscillator mode, selectable using the XTS bit. When XTS = 1, the LFXT1 module accepts ceramic resonators (450 kHz–8 MHz) or crystals (1–8 MHz), provided VCC ≥ 2.8 V. This enables precise MCLK generation for timing-critical peripherals without relying solely on the DCO.
How many I/O pins on the MSP430F1111AIDWR support interrupt-on-change functionality?
All 14 accessible I/O pins - P1.0 through P1.7 and P2.0 through P2.5 - support interrupt-on-change with individually configurable edge sensitivity (rising/falling/both). Each pin has dedicated interrupt flag (P1IFG/P2IFG), enable (P1IE/P2IE), and edge-select (P1IES/P2IES) bits, enabling granular event-driven wake-up without polling overhead.
Can the MSP430F1111AIDWR operate without an external crystal?
Yes, the MSP430F1111AIDWR can operate entirely from its internal digitally controlled oscillator (DCO), configured via DCOCTL and BCSCTL registers. The DCO provides stable clocking from ~0.8 MHz to 8 MHz across VCC and temperature, enabling crystal-free designs. External resistor (ROSC) tuning allows nominal frequency adjustment, and wake-up from LPM4 occurs in <6 μs using DCO.
What debug interfaces are supported by the MSP430F1111AIDWR?
The MSP430F1111AIDWR supports both JTAG (4-wire) and Bootstrap Loader (BSL) interfaces. JTAG provides full-speed in-circuit emulation and flash programming via TEST, TCK, TMS, and TDI/TDO pins. BSL enables UART-based programming using P1.1 (TX) and P2.2 (RX), protected by user-defined password - ideal for field updates without JTAG hardware.
MSP430F1111AIDWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-SOIC (0.295", 7.50mm 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:
- 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:
MSP430F1111AIDWR FAQ
1.How can I place an order for MSP430F1111AIDWR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F1111AIDWR 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 MSP430F1111AIDWR reliable?
The price and inventory of MSP430F1111AIDWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F1111AIDWR is usually 5 days.
3.What payment methods are accepted for MSP430F1111AIDWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F1111AIDWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F1111AIDWR?
MSP430F1111AIDWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F1111AIDWR 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 MSP430F1111AIDWR?
For technical support, including MSP430F1111AIDWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F1111AIDWR requirements.
6.How does Aetrix verify that MSP430F1111AIDWR is sourced from the original manufacturer or authorized distributors?
All MSP430F1111AIDWR 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 MSP430F1111AIDWR meets industry standards.
7.What is the process for return or replacement of MSP430F1111AIDWR?
All MSP430F1111AIDWR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F1111AIDWR, 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 MSP430F1111AIDWR part is unused and in its original packaging.
Return procedure for MSP430F1111AIDWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430F1111AIDWR 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…
