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Texas Instruments MSP430FR2311IPW20R
- Part No.:
- MSP430FR2311IPW20R
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430FR2311IPW20R.pdf
- Description:
- IC MCU 16BIT 3.75KB FRAM 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:14,257
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Product details
Overview
MSP430FR2311IPW20R from Texas Instruments is a 16-bit FRAM microcontroller with integrated transimpedance amplifier (TIA), 8-channel 10-bit ADC, and smart analog combo (SAC-L1) op-amp - designed for ultra-low-power sensing in battery-operated smoke detectors and portable health devices. It operates from 1.8 V to 3.6 V, delivers 126 µA/MHz active current, and features 3.75 KB FRAM + 1 KB RAM in a 20-pin TSSOP package.
For engineers reviewing the MSP430FR2311IPW20R datasheet, MSP430FR2311IPW20R pinout, MSP430FR2311IPW20R application, or MSP430FR2311IPW20R equivalent, this page provides verified functional details, validated pin roles, confirmed low-leakage TIA operation (5 pA input), real-time clock support in LPM3.5, and precise FRAM endurance (1015 write cycles) - all specific to the MSP430FR2311IPW20R device variant.
Technical Context
The MSP430FR2311IPW20R implements a 16-bit RISC CPU with digitally controlled oscillator (DCO) achieving ±1% accuracy at room temperature using on-chip reference. Its clock system integrates REFO (32 kHz), VLO (10 kHz), MODOSC, LFXT, and HFXT up to 16 MHz, with programmable MCLK/SMCLK prescalers.
It integrates three key analog subsystems: a configurable TIA with half-rail input and rail-to-rail output (enabled only on TSSOP-20), an 8-channel 10-bit ADC with 200 ksps sample rate and internal 1.5-V reference, and SAC-L1 supporting general-purpose op-amp operation with multiple input selections and dual power modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with constant generator; enables high code efficiency and sub-10 µs wake-up from LPM to active mode. |
| Memory | 3.75 KB ferroelectric RAM (FRAM) with ECC and 1015 write endurance; unified memory space for code, constants, and data storage. |
| TIA Input Leakage | 5 pA (typical) on TSSOP-20 package only; enables high-precision photodiode current measurement in smoke detection. |
| ADC Resolution & Speed | 10-bit SAR ADC with 8 single-ended channels; 200 ksps sampling rate supports real-time sensor signal digitization. |
| Low-Power Modes | LPM3.5 (RTC + backup RAM active): 0.71 µA; LPM4.5 (shutdown): 32 nA without SVS - critical for multi-year battery life. |
| Operating Voltage | 1.8 V to 3.6 V supply range; minimum voltage constrained by SVS thresholds per datasheet Section 5.3. |
| Digital Peripherals | Two Timer_B3 modules (each with 3 capture/compare registers), eUSCI_A (UART/IrDA/SPI), eUSCI_B (SPI/I²C), 16-bit CRC, and RTC counter. |
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 |
|---|---|---|
| 1 (P1.1) | UCB0CLK / ACLK / C1 / A1 | Primary SPI clock input; also supplies auxiliary clock (ACLK) and analog channel A1 input. |
| 3 (TEST) | SBWTCK | Spy-Bi-Wire clock input for debug programming; dedicated test interface pin. |
| 4 (RST/NMI) | Reset / Non-maskable interrupt | Active-low reset with NMI capability; requires 10-nF pulldown if unused per datasheet Section 4.6. |
| 15 (P1.7) | TRI0+ / A7 / UCA0TXD | Positive input of transimpedance amplifier (TIA); also serves as analog channel A7 and UART transmit. |
| 16 (P1.6) | TRI0− / A6 / UCA0RXD | Negative input of TIA with 5 pA leakage (TSSOP-20 only); also analog channel A6 and UART receive. |
| 17 (P1.5) | TRI0O / A5 / TMS | TIA output node; also analog channel A5 and JTAG test mode select. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable TIA | Half-rail input, rail-to-rail output, selectable high/low-power modes - enables direct photodiode interfacing without external op-amps. |
| Smart Analog Combo (SAC-L1) | General-purpose op-amp with rail-to-rail I/O and multiple input routing - supports sensor signal conditioning and active filtering. |
| Ferroelectric RAM (FRAM) | 3.75 KB nonvolatile memory with SRAM-like write speed, flash-like retention, and 1015 endurance - eliminates EEPROM wear-out concerns. |
| Capacitive Touch I/O | All 16 GPIOs support capacitive touch sensing - enables button/slider interfaces without external components. |
| Ultra-Low-Power RTC | Real-time clock operational in LPM3.5 at 0.71 µA with 32.768-kHz crystal - maintains timekeeping during deep sleep. |
Applications
| Smoke Detection | Portable Health Monitoring |
|---|---|
|
Use Scenario: Optical smoke chamber with photodiode current sensing in battery-powered residential alarms. IC Role / Device Role / Timing Role: MSP430FR2311IPW20R acts as analog front-end controller: TIA converts photodiode current to voltage, ADC digitizes signal, and FRAM stores event logs. Use Value: 5 pA TIA input leakage ensures accurate low-current detection; 32 nA LPM4.5 shutdown extends 10-year battery life. |
Use Scenario: Wearable pulse oximeter measuring photoplethysmography (PPG) signals via red/IR LEDs and photodiodes. IC Role / Device Role / Timing Role: MSP430FR2311IPW20R performs synchronized LED drive control, TIA-based current-to-voltage conversion, and real-time PPG waveform analysis. Use Value: Integrated SAC-L1 op-amp enables active filtering; 200 ksps ADC captures fast PPG transients without external sampling hardware. |
| Power Bank Fuel Gauging | Industrial Sensor Node |
|
Use Scenario: Compact USB-C power bank monitoring cell voltage, temperature, and charge/discharge current. IC Role / Device Role / Timing Role: MSP430FR2311IPW20R serves as fuel gauge MCU: ADC measures shunt voltage and thermistor, FRAM stores calibration data and cycle count. Use Value: 1015 FRAM write cycles eliminate flash wear-out during frequent SOC updates; 1.8 V minimum operation supports aging Li-ion cells. |
Use Scenario: Wireless environmental sensor node (temperature/humidity/CO) deployed in remote industrial locations. IC Role / Device Role / Timing Role: MSP430FR2311IPW20R manages sensor polling, data logging to FRAM, low-power BLE interface timing, and RTC-triggered wake-ups. Use Value: LPM3.5 RTC operation at 0.71 µA enables hourly wake-up and transmission without compromising multi-year battery runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power sensing MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR2311IPW16 | Same core and peripherals, but 16-pin TSSOP package with only 11 GPIOs and no TIA negative input (TRI0−) pin. | Lacks TIA differential input capability; unsuitable for precision photodiode current measurement requiring low-leakage TRI0−. | Select MSP430FR2311IPW20R when TIA-based analog sensing with 5 pA input leakage is required - only available in 20-pin TSSOP. |
| MSP430FR2111IPW20R | Lower memory (2 KB FRAM), no TIA, no SAC-L1 op-amp, same 20-pin TSSOP package and pin-compatible I/O mapping. | Cannot perform transimpedance amplification or general-purpose op-amp signal conditioning; limited to basic ADC/sensor readout. | Choose MSP430FR2311IPW20R over MSP430FR2111IPW20R when integrated analog front-end functionality (TIA + SAC) is essential for system BOM reduction. |
Compared with MSP430FR2311IPW16 and MSP430FR2111IPW20R, the MSP430FR2311IPW20R uniquely delivers full TIA functionality (including TRI0−) and 3.75 KB FRAM in the 20-pin TSSOP footprint - enabling higher-accuracy optical sensing without external analog components.
Availability
MSP430FR2311IPW20R is available at Aetrix Electronics and suitable for smoke detection systems, portable health monitors, and power bank fuel gauging requiring stable component supply across long-lifecycle industrial and consumer programs.
Supply support for MSP430FR2311IPW20R 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 focus on energy efficiency and system integration.
The MSP430FR231x family targets ultra-low-power sensing and measurement applications - combining FRAM, integrated analog (TIA/SAC), and optimized low-power modes for extended battery life in portable and wireless devices.
FAQ
What is the maximum operating frequency of the MSP430FR2311IPW20R?
The MSP430FR2311IPW20R supports a maximum CPU clock frequency of 16 MHz, achieved via its on-chip digitally controlled oscillator (DCO) with frequency-locked loop (FLL). This 16-MHz operation is specified under recommended conditions (VCC = 3.0–3.6 V, TA = –40°C to 85°C) and enables sub-10 µs wake-up from low-power modes. The MSP430FR2311IPW20R does not require external crystals for full-speed operation, though HFXT supports up to 16 MHz for precision timing.
Does the MSP430FR2311IPW20R support true differential TIA operation?
Yes - the MSP430FR2311IPW20R supports true differential transimpedance amplifier operation via dedicated TRI0+ (Pin 15) and TRI0− (Pin 16) inputs, both accessible only in the 20-pin TSSOP package. The TRI0− pin exhibits 5 pA typical input leakage, enabling high-fidelity photodiode current measurement. This differential capability is absent in the 16-pin variants (PW16, RGY) and unrelated family members like MSP430FR2111IPW20R.
What is the endurance rating of the FRAM in the MSP430FR2311IPW20R?
The MSP430FR2311IPW20R integrates 3.75 KB of ferroelectric RAM (FRAM) rated for 1015 write cycles - orders of magnitude higher than flash or EEPROM. This endurance is intrinsic to FRAM technology and applies across the full operating temperature range (–40°C to 85°C). Unlike flash, FRAM writes are byte-addressable, instantaneous, and do not require erase cycles - making the MSP430FR2311IPW20R ideal for frequent data logging applications.
Can the MSP430FR2311IPW20R operate from a 1.8 V supply?
Yes - the MSP430FR2311IPW20R is fully specified to operate from 1.8 V to 3.6 V. However, the minimum usable supply voltage is constrained by the supply voltage supervisor (SVS) thresholds, which vary with configuration. At 1.8 V, active-mode current is ~126 µA/MHz, and LPM3.5 (RTC active) draws 0.71 µA. System design must ensure SVS levels remain within specification per Section 5.3 of the datasheet to avoid unintended resets.
Which development tools are officially supported for the MSP430FR2311IPW20R?
Texas Instruments officially supports the MSP‑EXP430FR2311 LaunchPad™ development kit and the MSP‑TS430PW20 20-pin target development board for the MSP430FR2311IPW20R. These boards provide direct access to all 20 pins, onboard debugging via Spy-Bi-Wire, and compatibility with Code Composer Studio™ and MSP430Ware™ software. TI's free toolchain includes drivers, example code for TIA/ADC/SAC peripherals, and reference designs specifically validated for the MSP430FR2311IPW20R device variant.
MSP430FR2311IPW20R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430™ FRAM
- Packaging:
- Tape & Reel (TR)
- 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:
MSP430FR2311IPW20R FAQ
1.How can I place an order for MSP430FR2311IPW20R through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR2311IPW20R 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 MSP430FR2311IPW20R reliable?
The price and inventory of MSP430FR2311IPW20R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR2311IPW20R is usually 5 days.
3.What payment methods are accepted for MSP430FR2311IPW20R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR2311IPW20R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR2311IPW20R?
MSP430FR2311IPW20R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR2311IPW20R 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 MSP430FR2311IPW20R?
For technical support, including MSP430FR2311IPW20R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR2311IPW20R requirements.
6.How does Aetrix verify that MSP430FR2311IPW20R is sourced from the original manufacturer or authorized distributors?
All MSP430FR2311IPW20R 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 MSP430FR2311IPW20R meets industry standards.
7.What is the process for return or replacement of MSP430FR2311IPW20R?
All MSP430FR2311IPW20R units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR2311IPW20R, 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 MSP430FR2311IPW20R part is unused and in its original packaging.
Return procedure for MSP430FR2311IPW20R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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