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Texas Instruments MSP430FR2100IRLLT
- Part No.:
- MSP430FR2100IRLLT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
MSP430FR2100IRLLT.pdf
- Description:
- IC MCU 16BIT 1KB FRAM 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:970
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Product details
Overview
MSP430FR2100IRLLT from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 1KB program FRAM, 512-byte RAM, and 12 GPIOs in a 24-pin VQFN package. It integrates a 16-MHz DCO with FLL, eUSCI_A for UART/SPI, Timer_B3 with three capture/compare registers, and an enhanced comparator with 6-bit DAC reference - designed for battery-powered smoke detectors and door/window sensors.
For engineers reviewing the MSP430FR2100IRLLT datasheet, MSP430FR2100IRLLT pinout, MSP430FR2100IRLLT application, or MSP430FR2100IRLLT equivalent, key selection criteria include LPM3.5 current (1 µA), FRAM endurance (1015 write cycles), capacitive touch I/O capability, and compatibility with Spy-Bi-Wire debug interface.
Technical Context
The MSP430FR2100IRLLT implements a 16-bit RISC CPU with constant generator and digitally controlled oscillator (DCO) locked via frequency-locked loop (FLL) to achieve ±1% accuracy at room temperature. Its clock system supports multiple sources: internal REFO (32 kHz), VLO (10 kHz), MODOSC, and external LFXT crystal.
Power management includes five low-power modes (LPM0–LPM4.5); LPM3.5 enables RTC counter operation with 32.768-kHz crystal at 1 µA, while LPM4.5 achieves 34 nA shutdown current without SVS. All 12 I/O pins support capacitive touch sensing and eight can wake the device from any LPM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with constant generator; enables high code efficiency and fast wake-up (<10 µs) from LPMs |
| FRAM Size | 1 KB program FRAM + 512 B RAM; unified memory allows flexible data logging and firmware updates without erase cycles |
| Low-Power Mode Current | LPM3.5 = 1 µA (with 32.768-kHz crystal); enables long-life real-time clock operation in battery-powered systems |
| Active Mode Current | 120 µA/MHz at 3 V; supports energy-aware scheduling for intermittent sensing tasks |
| ADC Availability | Not integrated - MSP430FR2100IRLLT omits ADC functionality per device specification; relies on eCOMP and external analog front-end |
| Timer Peripherals | Timer_B3 with three CCR registers (CCR0 internal only; CCR1/CCR2 externally accessible for PWM or capture) |
| Communication Interface | eUSCI_A0 supporting UART, IrDA, and SPI; enables sensor node connectivity with minimal pin count and power overhead |
Pinout & Package
Package: 24-pin VQFN (RLL), 3 mm × 3 mm, 0.4 mm pitch, thermally enhanced with exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0 / UCA0STE / SMCLK / C0 / A0 / Veref+ | Multi-function I/O | Primary SPI slave select or SMCLK output; also serves as comparator input C0 - no ADC function on this variant |
| P1.1 / UCA0CLK / ACLK / C1 / A1 | Multi-function I/O | UART/SPI clock or ACLK output; dual-role comparator input C1; not used for ADC in MSP430FR2100IRLLT |
| RST/NMI/SBWTDIO | Debug & reset | Combined reset, non-maskable interrupt, and Spy-Bi-Wire bidirectional data line - enables single-wire debugging |
| TEST/SBWTCK | Debug clock | Dedicated Spy-Bi-Wire clock input; required for programming and in-circuit debugging |
| DVCC / DVSS | Power pair | Single 1.8–3.6 V supply domain powers digital and analog modules; requires 4.7–10 µF + 0.1 µF decoupling |
| P2.0 / TB0.1 / COUT | Timer & comparator output | Timer_B3 channel 1 output or comparator output - supports PWM generation or event-triggered wake-up |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 1 KB unified program/data memory with 1015 write endurance, ECC protection, and configurable write lock - eliminates flash wear-out in frequent logging applications |
| Ultra-Low-Power Operation | LPM3.5 current of 1 µA with RTC active enables multi-year battery life in wireless sensor nodes using coin-cell batteries |
| Capacitive Touch I/O | All 12 GPIOs support capacitive sensing without external components - ideal for tamper detection in door/window sensors |
| Enhanced Comparator (eCOMP0) | Integrated 6-bit DAC provides programmable reference voltage; hysteresis and power-mode control enable precision threshold detection at sub-µA quiescent current |
| Spy-Bi-Wire Debug | Two-pin (SBWTCK + SBWTDIO) interface supports full programming, debugging, and boundary scan - reduces test footprint vs JTAG |
Applications
| Smoke and Heat Detectors | Door and Window Sensors |
|---|---|
Use Scenario: Standalone battery-powered smoke alarm with periodic self-test and acoustic alert. IC Role / Device Role: Main system controller managing CO/heat sensing interface, buzzer driver, LED indicators, and low-power sleep/wake cycles. Use Value: LPM4.5 current of 34 nA extends 10-year battery life; FRAM enables reliable event logging without flash wear degradation. | Use Scenario: Wireless magnetic contact sensor detecting door/window opening/closing events. IC Role / Device Role: Edge intelligence node performing contact state sampling, tamper detection via capacitive touch, and BLE/Wi-Fi wakeup signaling. Use Value: All 12 GPIOs support capacitive touch - enables dual-function I/O for both reed switch interface and housing intrusion sensing. |
| Lighting Sensors | Power Monitoring |
Use Scenario: Ambient light intensity measurement in smart lighting controls using photodiode or ambient light IC. IC Role / Device Role: Signal conditioner and communication hub interfacing analog light sensor output to MCU via eCOMP or external ADC. Use Value: eCOMP0 with 6-bit DAC reference enables precise light-threshold triggering; low active current (120 µA/MHz) minimizes sensor bias power. | Use Scenario: AC mains monitoring in appliance battery packs or UPS units using isolated current/voltage sensing. IC Role / Device Role: Data acquisition controller reading isolated analog signals, computing RMS/power metrics, and storing history in FRAM. Use Value: Unified FRAM simplifies firmware updates and data retention during brownout; CRC16 peripheral ensures integrity of stored energy logs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR2110IRLL | 2 KB FRAM, 1 KB RAM, same peripherals and package; includes full 8-channel 10-bit ADC | Required when analog signal acquisition (e.g., temperature, voltage) is needed alongside capacitive touch | Select if ADC integration reduces BOM cost and layout complexity versus external ADC solution |
| MSP430FR2000IRLL | 0.5 KB FRAM, 512 B RAM, identical peripheral set except no ADC; lowest-cost entry in family | Suitable for pure digital control or logic-only functions where memory and feature headroom are minimal | Choose when firmware size is under 3 KB and no future ADC expansion is planned |
Compared with MSP430FR2110IRLL and MSP430FR2000IRLL, the MSP430FR2100IRLLT offers balanced memory (1 KB FRAM), full timer/comparator/debug features, and zero ADC - making it optimal for cost-sensitive, event-driven sensing where external analog conditioning is already present.
Availability
MSP430FR2100IRLLT is available at Aetrix Electronics and suitable for smoke detectors, door/window sensors, and lighting sensors requiring stable component supply across industrial and consumer OEM programs.
Supply support for MSP430FR2100IRLLT 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 company delivering analog and embedded processing solutions for industrial, automotive, and personal electronics markets.
The MSP430FR21xx product line targets ultra-low-power sensing applications, emphasizing FRAM-based data logging, capacitive touch, and rapid wake-up - specifically engineered for battery-operated safety and environmental monitoring devices.
FAQ
Does the MSP430FR2100IRLLT include an integrated ADC?
No, the MSP430FR2100IRLLT does not include an analog-to-digital converter. Per the official device comparison table and functional block diagram, ADC functionality is omitted in the MSP430FR2100 and MSP430FR2000 variants. Designers must use external ADCs or rely on the integrated eCOMP0 for threshold-based analog decisions. This omission reduces die size and cost while maintaining core ultra-low-power capabilities for event-driven sensing.
What debug interface does the MSP430FR2100IRLLT support?
The MSP430FR2100IRLLT supports the Spy-Bi-Wire (SBW) interface using two pins: SBWTCK (pin 1, RLL package) and SBWTDIO (pin 2, RLL package). This two-wire protocol enables full programming, debugging, and boundary-scan functionality - eliminating the need for four-pin JTAG. TI's MSP-FET430U20 and MSP-TS430PW20 tools provide SBW-compatible hardware access.
Can all GPIO pins on the MSP430FR2100IRLLT be used for capacitive touch sensing?
Yes, all 12 general-purpose I/O pins on the MSP430FR2100IRLLT support capacitive touch sensing without external components. This capability is explicitly confirmed in the "General input/output and pin functionality" section and reinforced in the functional block diagram. Each pin can be configured as a touch electrode, enabling robust tamper detection or user interface in space-constrained designs like smoke alarms or window sensors.
What is the minimum operating voltage for the MSP430FR2100IRLLT?
The MSP430FR2100IRLLT operates from 1.8 V to 3.6 V. However, the practical minimum voltage is constrained by the Supply Voltage Supervisor (SVS) thresholds - below ~1.8 V, SVS may trigger reset or disable certain modules. The datasheet specifies 1.8 V as the absolute minimum recommended operating voltage, and all electrical characteristics (e.g., 120 µA/MHz active current) are guaranteed within this range.
Is the MSP430FR2100IRLLT pin-compatible with other devices in the MSP430FR21xx family?
Yes, the MSP430FR2100IRLLT shares identical pinout and package (24-pin VQFN, RLL) with MSP430FR2110IRLL, MSP430FR2111IRLL, and MSP430FR2000IRLL. Signal mapping, power pin locations, and debug interface pins are fully aligned. This allows direct PCB reuse across variants - upgrading to MSP430FR2110IRLL adds ADC capability without layout changes, while downgrading to MSP430FR2000IRLL retains full pin compatibility at lower memory density.
MSP430FR2100IRLLT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 24-VFQFN Exposed Pad
- Series:
- MSP430™ FRAM
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- IrDA, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 12
- Program Memory Size:
- 1KB (1K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 512 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR2100IRLLT FAQ
1.How can I place an order for MSP430FR2100IRLLT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR2100IRLLT 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 MSP430FR2100IRLLT reliable?
The price and inventory of MSP430FR2100IRLLT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR2100IRLLT is usually 5 days.
3.What payment methods are accepted for MSP430FR2100IRLLT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR2100IRLLT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR2100IRLLT?
MSP430FR2100IRLLT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR2100IRLLT 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 MSP430FR2100IRLLT?
For technical support, including MSP430FR2100IRLLT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR2100IRLLT requirements.
6.How does Aetrix verify that MSP430FR2100IRLLT is sourced from the original manufacturer or authorized distributors?
All MSP430FR2100IRLLT 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 MSP430FR2100IRLLT meets industry standards.
7.What is the process for return or replacement of MSP430FR2100IRLLT?
All MSP430FR2100IRLLT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR2100IRLLT, 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 MSP430FR2100IRLLT part is unused and in its original packaging.
Return procedure for MSP430FR2100IRLLT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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