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Texas Instruments MSP430FR2311IPW20
- Part No.:
- MSP430FR2311IPW20
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430FR2311IPW20.pdf
- Description:
- IC MCU 16BIT 3.75KB FRAM 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:773
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Product details
Overview
MSP430FR2311IPW20 from Texas Instruments is a 16-bit RISC mixed-signal microcontroller with 3.75KB FRAM, 1KB RAM, integrated transimpedance amplifier (TIA), 8-channel 10-bit ADC, and smart analog combo (SAC-L1) for sensor signal conditioning. It operates from 1.8 V to 3.6 V, achieves 126 µA/MHz active current, and supports ultra-low-power modes including LPM3.5 (0.71 µA) and LPM4.5 (32 nA), targeting battery-powered smoke detectors and portable health monitors.
For engineers reviewing the MSP430FR2311IPW20 datasheet, MSP430FR2311IPW20 pinout, MSP430FR2311IPW20 application, or MSP430FR2311IPW20 equivalent, key selection considerations include its TSSOP-20 package with 16 I/Os, low-leakage TIA input (5 pA), rail-to-rail SAC output, and dual eUSCI modules supporting UART/I²C/SPI - all critical for compact, low-power sensing node design.
Technical Context
The MSP430FR2311IPW20 integrates a digitally controlled oscillator (DCO) with ±1% accuracy at room temperature, programmable MCLK prescaler (1–128), and SMCLK derived via 1/2/4/8 division. Its clock system supports internal REFO (32 kHz), VLO (10 kHz), MODOSC, and external crystals up to 16 MHz (HFXT) or 32 kHz (LFXT).
It features two Timer_B3 modules (each with three capture/compare registers), CRC16 engine, RTC counter, and JTAG/Spy-Bi-Wire debug interface. The TIA supports half-rail input, rail-to-rail output, configurable high/low-power modes, and is enabled only on TSSOP-20 packages - matching the MSP430FR2311IPW20's physical configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with constant generator; enables efficient C code execution and deterministic interrupt latency. |
| Memory | 3.75KB ferroelectric RAM (FRAM) with ECC, 1KB SRAM, 32B backup memory; supports 10¹⁵ write cycles and radiation resistance. |
| ADC | 8-channel, 10-bit SAR ADC with 200 ksps sample rate, internal 1.5-V reference, and sample-and-hold; suitable for direct sensor digitization. |
| TIA Input Leakage | 5 pA max at 25°C; enables high-impedance photodiode or electrochemical sensor interfacing without signal degradation. |
| Low-Power Modes | LPM3.5 draws 0.71 µA (RTC + 32768-Hz crystal active); LPM4.5 draws 32 nA (full shutdown); extends battery life in intermittent-sensing applications. |
| eUSCI Peripherals | eUSCI_A0 supports UART/IrDA/SPI; eUSCI_B0 supports SPI/I²C with remap capability; simplifies host communication and sensor bus integration. |
| I/O Count & Type | 16 general-purpose I/Os in TSSOP-20 package; all support capacitive touch sensing and 12 are interrupt-capable for wake-from-sleep event detection. |
Pinout & Package
Package: 20-pin TSSOP (PW20), 6.5 mm × 4.4 mm body size, surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0 / UCB0STE / SMCLK / C0 / A0 / Veref+ | Multi-function I/O | Primary SPI slave select (UCB0STE), system clock output (SMCLK), analog channel 0 input, and internal reference voltage source. |
| P1.1 / UCB0CLK / ACLK / C1 / A1 | Multi-function I/O | SPI clock (UCB0CLK), auxiliary clock output (ACLK), analog channel 1 input, and comparator input. |
| RST/NMI/SBWTDIO | Reset & debug I/O | Active-low reset input, non-maskable interrupt, and bidirectional Spy-Bi-Wire data line for programming and debugging. |
| TEST/SBWTCK | Debug input | Test clock input for Spy-Bi-Wire interface; required for in-circuit programming and emulation. |
| DVCC / DVSS | Power pair | Main digital/analog supply (DVCC) and ground (DVSS); require 4.7–10 µF bulk + 0.1 µF decoupling per TI layout guidelines. |
| P2.7 / TB0CLK / XIN | Oscillator input | External low-frequency crystal input (XIN) and Timer_B0 clock source; supports 32.768-kHz crystal for RTC operation. |
| P1.6 / TB0.1 / TDI / TCLK / TRI0- / A6 | Analog input | Negative input of transimpedance amplifier (TRI0-), analog channel 6, and JTAG test data input - shared function requiring careful signal routing. |
| P1.7 / TB0.2 / TDO / TRI0+ / A7 | Analog input | Positive input of transimpedance amplifier (TRI0+), analog channel 7, and JTAG test data output - critical for photodiode biasing and signal acquisition. |
| P1.5 / TMS / TRI0O / A5 | Analog output | TIA output (TRI0O), analog channel 5 input, and JTAG test mode select - provides conditioned current-to-voltage signal for downstream ADC or comparator. |
| P2.0 / TB1.1 / COUT | Timer output | Timer_B1 output channel (TB1.1) and comparator output (COUT); enables PWM generation or logic-level event signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Transimpedance Amplifier (TIA) | Configurable gain, 5-pA input leakage, half-rail input range, rail-to-rail output - optimized for optical and electrochemical sensors in smoke detectors. |
| Smart Analog Combo (SAC-L1) | General-purpose op amp with rail-to-rail I/O, multiple input selections, and dual power modes - replaces discrete op-amp stages in analog front-ends. |
| Ferroelectric RAM (FRAM) | 3.75KB unified memory with ECC, 10¹⁵ write endurance, and zero write-delay - eliminates flash wear-out concerns in data-logging applications. |
| Ultra-Low-Power Operation | 126 µA/MHz active, 0.71 µA LPM3.5, 32 nA LPM4.5 - enables multi-year battery life in coin-cell–powered portable health devices. |
| Capacitive Touch I/O | All 16 GPIOs support capacitive touch sensing without external components - reduces BOM cost and PCB area in user-interface designs. |
Applications
| Smoke Detection System | Portable Health Monitor |
|---|---|
Use Scenario: Optical chamber with photodiode detecting scattered light from smoke particles in battery-operated residential alarms. IC Role / Device Role / Timing Role: MSP430FR2311IPW20 acts as main controller and analog signal conditioner: TIA converts photodiode current to voltage, ADC digitizes result, and RTC triggers periodic self-test. Use Value: 5-pA TIA input leakage preserves signal integrity; FRAM stores calibration data across 10+ years; LPM4.5 minimizes standby current to extend 10-year battery life. | Use Scenario: Wrist-worn pulse oximeter acquiring PPG signals using green/red LEDs and photodiode under variable skin contact conditions. IC Role / Device Role / Timing Role: MSP430FR2311IPW20 performs LED timing control, TIA-based current-to-voltage conversion, synchronous ADC sampling, and Bluetooth LE data packet assembly. Use Value: SAC-L1 op amp configures as transimpedance stage with programmable gain; 16 I/Os support LED drivers and touch buttons; FRAM buffers raw waveform data before transmission. |
| Power Bank Fuel Gauge | Industrial Current Sensor Node |
Use Scenario: USB-C power bank monitoring cell voltage, charge/discharge current, and temperature to estimate remaining capacity and prevent overvoltage. IC Role / Device Role / Timing Role: MSP430FR2311IPW20 serves as embedded fuel gauge MCU: ADC measures shunt voltage, SAC-L1 amplifies low-side current sense, and FRAM logs cycle-count history. Use Value: 10-bit ADC with internal reference ensures consistent measurement accuracy; 3.75KB FRAM retains lifetime usage logs without flash wear; LPM3.5 enables background monitoring at <1 µA. | Use Scenario: DIN-rail mounted current transducer measuring AC mains current via Rogowski coil or current transformer in building energy meters. IC Role / Device Role / Timing Role: MSP430FR2311IPW20 conditions CT output with SAC-L1, samples at 200 ksps via ADC, computes RMS/THD in real time, and communicates via I²C to host MCU. Use Value: eUSCI_B0 supports I²C with remap feature for flexible PCB routing; 16-MHz DCO enables precise timing for 50/60 Hz sampling; TSSOP-20 package fits constrained industrial module footprints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR2310IPW20 | 2KB FRAM (vs. 3.75KB), identical peripherals, same TSSOP-20 package and pinout. | Lower program memory limits firmware complexity; suitable for simpler smoke detector firmware without extensive logging. | Select when application requires only basic TIA/ADC functionality and memory headroom is not needed. |
| MSP430FR2111IPW20 | No TIA; 2KB FRAM; lacks SAC-L1 and eCOMP0; same 16-MHz DCO and LPM performance. | Cannot replace MSP430FR2311IPW20 in TIA-dependent designs (e.g., photodiode interfaces); limited to general-purpose sensing without current-mode signal conditioning. | Choose only if TIA and SAC are unnecessary and cost reduction is prioritized over analog flexibility. |
Compared with MSP430FR2310IPW20, the MSP430FR2311IPW20 offers 89% more FRAM for firmware expansion and data buffering; versus MSP430FR2111IPW20, it adds essential TIA and SAC-L1 blocks required for precision current-to-voltage conversion and programmable op-amp configurations in safety-critical sensing.
Availability
MSP430FR2311IPW20 is available at Aetrix Electronics and suitable for smoke detectors, portable health monitors, and power bank fuel gauges requiring stable component supply, long-term lifecycle assurance, and full traceability.
Supply support for MSP430FR2311IPW20 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 with emphasis on energy efficiency, reliability, and system integration.
The MSP430FR231x product line targets ultra-low-power sensing and measurement applications, integrating FRAM, analog peripherals (TIA, SAC, eCOMP), and intelligent timers to minimize external components in battery-operated devices.
FAQ
What is the maximum operating frequency of the MSP430FR2311IPW20?
The MSP430FR2311IPW20 features a digitally controlled oscillator (DCO) with frequency-locked loop (FLL) supporting up to 16 MHz operation. This maximum frequency is achievable across the full recommended supply voltage range (1.8 V to 3.6 V) and is specified with ±1% accuracy at room temperature when using the on-chip reference. The MSP430FR2311IPW20 maintains this performance while enabling sub-10-µs wake-up from low-power modes.
Does the MSP430FR2311IPW20 support capacitive touch sensing?
Yes, the MSP430FR2311IPW20 supports capacitive touch sensing on all 16 general-purpose I/O pins. This capability is implemented in hardware via the built-in capacitive touch I/O module, eliminating the need for external RC networks or dedicated touch controllers. The MSP430FR2311IPW20's firmware can configure any GPIO as a touch channel, enabling slider, wheel, or button implementations with minimal code overhead and no additional BOM cost.
What analog peripherals are integrated into the MSP430FR2311IPW20?
The MSP430FR2311IPW20 integrates three key analog peripherals: a transimpedance amplifier (TIA) with 5-pA input leakage, an 8-channel 10-bit ADC with 200 ksps sampling and internal 1.5-V reference, and a Smart Analog Combo (SAC-L1) module providing a general-purpose rail-to-rail op amp. It also includes an enhanced comparator (eCOMP0) with integrated 6-bit DAC for programmable reference and hysteresis - all accessible within the same TSSOP-20 package as the MSP430FR2311IPW20.
Is the MSP430FR2311IPW20 pin-compatible with other devices in the FR231x family?
Yes, the MSP430FR2311IPW20 is pin-compatible with the MSP430FR2310IPW20 in the same TSSOP-20 package - sharing identical pin count, pinout, and electrical characteristics. However, it is not pin-compatible with TSSOP-16 or VQFN-16 variants (e.g., MSP430FR2311IPW16 or MSP430FR2311IRGY) due to differing pin counts and signal allocations. The MSP430FR2311IPW20's pin mapping is validated for 20-pin TSSOP only.
What development tools are supported for the MSP430FR2311IPW20?
The MSP430FR2311IPW20 is supported by the MSP-EXP430FR2311 LaunchPad™ development kit and the MSP-TS430PW20 20-pin target development board. Software support includes free MSP430Ware™ libraries and drivers, Code Composer Studio™ IDE (desktop and cloud), and TI Resource Explorer. All tools are fully compatible with the MSP430FR2311IPW20's peripherals, debug interface (Spy-Bi-Wire), and FRAM memory architecture.
MSP430FR2311IPW20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430™ FRAM
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 3.75KB (3.75K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 1K 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:
MSP430FR2311IPW20 FAQ
1.How can I place an order for MSP430FR2311IPW20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR2311IPW20 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 MSP430FR2311IPW20 reliable?
The price and inventory of MSP430FR2311IPW20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR2311IPW20 is usually 5 days.
3.What payment methods are accepted for MSP430FR2311IPW20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR2311IPW20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR2311IPW20?
MSP430FR2311IPW20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR2311IPW20 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 MSP430FR2311IPW20?
For technical support, including MSP430FR2311IPW20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR2311IPW20 requirements.
6.How does Aetrix verify that MSP430FR2311IPW20 is sourced from the original manufacturer or authorized distributors?
All MSP430FR2311IPW20 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 MSP430FR2311IPW20 meets industry standards.
7.What is the process for return or replacement of MSP430FR2311IPW20?
All MSP430FR2311IPW20 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR2311IPW20, 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 MSP430FR2311IPW20 part is unused and in its original packaging.
Return procedure for MSP430FR2311IPW20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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