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Texas Instruments MSP430FR5857IDAR
- Part No.:
- MSP430FR5857IDAR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 38-TSSOP (0.240", 6.10mm Width)
- Datasheet:
-
MSP430FR5857IDAR.pdf
- Description:
- IC MCU 16BIT 32KB FRAM 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,067
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Product details
Overview
MSP430FR5857IDAR from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller with 32KB nonvolatile memory, 1KB RAM, and integrated 12-bit ADC (14 external channels), RTC, and dual eUSCI modules (UART/I²C/SPI). It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and data loggers requiring fast write endurance and sub-µA LPM3.5 operation.
For engineers reviewing the MSP430FR5857IDAR datasheet, MSP430FR5857IDAR pinout, MSP430FR5857IDAR application, or MSP430FR5857IDAR equivalent, key selection criteria include HFXT oscillator support (not LFXT), 40-pin TSSOP package, UART BSL capability, capacitive touch I/O on all pins, and FRAM's 10¹⁵ write-cycle endurance for frequent logging.
Technical Context
The MSP430FR5857IDAR implements the CPUXV2 core with 16 registers and executes instructions at up to 16 MHz using a factory-trimmed DCO or external HFXT (4–24 MHz). Its clock system includes SMCLK, ACLK, and MCLK domains, with dedicated LFXIN/LFXOUT pins omitted - confirming HFXT-only operation per device family documentation.
Peripherals are tightly coupled to low-power modes: the RTC_B module requires LFXT and is excluded; instead, real-time functions rely on timer-based calendar emulation or external timekeeping. The 3-channel DMA controller enables autonomous ADC-to-FRAM transfers without CPU wake-up, critical for energy-constrained deployments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit CPUXV2 RISC core with 16 general-purpose registers; enables deterministic timing and compact code for embedded control. |
| FRAM Size | 32 KB unified nonvolatile memory; eliminates erase cycles, supports byte-level writes, and enables instant data persistence during power loss. |
| RAM Size | 1 KB SRAM; used for stack, variables, and high-speed buffering while FRAM handles program storage and persistent data. |
| ADC Resolution | 12-bit SAR ADC with 14 external input channels; provides sufficient dynamic range for precision sensor signal acquisition in metering. |
| LPM3.5 Current | 0.25 µA typical with RTC disabled; enables multi-year battery life in sleep-dominated applications like environmental sensors. |
| Supply Voltage | 1.8 V to 3.6 V; supports direct connection to single Li-ion or two alkaline cells without regulation overhead. |
| Package Type | TSSOP-38 (38-pin); surface-mount footprint with 12.5 mm × 6.2 mm body size, compatible with standard PCB assembly processes. |
Pinout & Package
Package: TSSOP-38 (38-pin thin shrink small-outline package), 12.5 mm × 6.2 mm body size, 0.65 mm pitch. Thermal pad not present; no exposed thermal pad requirement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TA0.1/DMAE0/A0/C0/VREF-/VeREF- | Multi-function I/O | Primary ADC channel A0 input; also serves as Timer_A0 capture/compare, DMA trigger, and negative reference output/input. |
| P1.1/TA0.2/TA1CLK/COUT/A1/C1/VREF+/VeREF+ | Multi-function I/O | ADC channel A1 input and positive reference source; supports comparator output and Timer_A0/Timer_A1 clock input. |
| P2.0/TB0.6/UCA0TXD/UCA0SIMO/TB0CLK/ACLK | Serial interface & clock | UART transmit (UCA0TXD) and SPI master out (UCA0SIMO); also provides ACLK output and Timer_B0 clock source. |
| P2.1/TB0.0/UCA0RXD/UCA0SOMI/TB0.0 | Serial interface | UART receive (UCA0RXD) and SPI master in (UCA0SOMI); dual-use as Timer_B0 capture input and BSLRX for UART bootloader. |
| RST/NMI/SBWTDIO | Reset & debug | Active-low reset input, non-maskable interrupt, and bidirectional JTAG/Spy-Bi-Wire debug I/O; essential for programming and fault recovery. |
| AVCC / AVSS / DVCC / DVSS | Power supply | Separate analog (AVCC/AVSS) and digital (DVCC/DVSS) rails reduce noise coupling into ADC and timers; require independent decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 32 KB nonvolatile memory with 125 ns write speed and 10¹⁵ write-cycle endurance - enables reliable, high-frequency data logging without wear leveling. |
| Capacitive Touch I/O | All GPIO pins support capacitive touch sensing without external components - reduces BOM cost and board space in wearable interfaces. |
| eUSCI Modules | Dual enhanced USCI: eUSCI_A0 (UART/IrDA/SPI) and eUSCI_B0 (I²C/SPI); supports hardware UART bootloader (BSL) via P2.0/P2.1. |
| Ultra-Low-Power Modes | LPM3.5 draws 0.25 µA (typical); LPM4.5 draws 0.02 µA - extends battery life in intermittently active sensor endpoints. |
| Integrated Analog Peripherals | 12-bit ADC with internal reference and sample-and-hold, plus 16-channel analog comparator - enables local signal conditioning and threshold detection. |
Applications
| Smart Utility Metering | Energy-Harvested Sensor Node |
|---|---|
Use Scenario: Gas/water meter with pulse counting, temperature compensation, and periodic RF transmission. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing FRAM-based consumption history, and scheduling low-duty-cycle radio bursts. Use Value: FRAM enables atomic write of cumulative usage counters during brownout; 0.25 µA LPM3.5 extends 10+ year battery life between replacements. |
Use Scenario: Solar-powered soil moisture sensor transmitting hourly readings via LoRaWAN. IC Role / Device Role / Timing Role: System-on-chip managing photovoltaic harvesting, ADC sampling, FRAM buffering, and timed MCU wake-up for transmission. Use Value: Unified FRAM simplifies firmware design by eliminating flash erase management; HFXT ensures accurate timing for radio sync without crystal cost penalty. |
| Industrial Data Logger | Wearable Health Monitor |
Use Scenario: Temperature/humidity logger in HVAC ducts recording every 5 minutes for 30 days. IC Role / Device Role / Timing Role: Standalone logging engine with RTC-less timekeeping via Timer_B interrupts and FRAM circular buffer management. Use Value: 32 KB FRAM stores >200,000 timestamped samples; 12-bit ADC resolution captures ±0.1°C thermal gradients reliably. |
Use Scenario: Wrist-worn heart rate monitor using optical PPG and motion sensing. IC Role / Device Role / Timing Role: Real-time signal processor acquiring analog PPG data, running motion artifact correction, and storing trend data. Use Value: All-port capacitive touch enables buttonless UI; FRAM's instant write prevents data loss during sudden power removal during charging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR5858IDAR | 48 KB FRAM, 2 KB RAM, same 38-pin TSSOP package and HFXT support. | Higher memory headroom for larger firmware or extended data buffers in long-interval logging. | Select when firmware size exceeds 32 KB or additional RAM is needed for complex algorithms. |
| MSP430FR5847IDAR | 32 KB FRAM, 1 KB RAM, but LFXT-only (no HFXIN/HFXOUT pins); different pinout (no PJ.6/PJ.7). | Requires 32.768 kHz crystal only; unsuitable for applications needing precise HF timing or UART baud accuracy above 1 Mbps. | Choose only if system lacks HF crystal and timing tolerance allows LFXT-derived clocks. |
Compared with MSP430FR5857IDAR, MSP430FR5858IDAR offers more FRAM/RAM without layout change, while MSP430FR5847IDAR sacrifices HFXT flexibility for lower BOM cost - making MSP430FR5857IDAR optimal for balanced HF-timed, memory-constrained edge nodes.
Availability
MSP430FR5857IDAR is available at Aetrix Electronics and suitable for smart utility metering, industrial data logging, and wearable electronics requiring stable component supply across multi-year production cycles.
Supply support for MSP430FR5857IDAR 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 and embedded processing solutions, with over 90 years of innovation in low-power design and mixed-signal integration.
The MSP430FR58xx family delivers ULP FRAM MCUs optimized for energy-constrained sensing, metering, and data-acquisition systems - combining radiation-resistant memory, sub-µA sleep, and integrated analog front ends.
FAQ
What is the maximum operating frequency of the MSP430FR5857IDAR?
The MSP430FR5857IDAR supports a maximum system clock frequency of 16 MHz, achievable using the factory-trimmed DCO or an external HFXT crystal (4–24 MHz). This enables real-time processing of sensor data and communication protocols without compromising ultra-low-power operation in active mode (≈100 µA/MHz).
Does the MSP430FR5857IDAR include a real-time clock (RTC) module?
No, the MSP430FR5857IDAR does not include the RTC_B module. As confirmed in the functional block diagram notes and device comparison table, RTC_B is only available in MSP430FR5x6x and MSP430FR5x4x devices with LFXT support. The MSP430FR5857IDAR supports HFXT only and relies on timer-based timekeeping.
What bootloader interface does the MSP430FR5857IDAR support?
The MSP430FR5857IDAR supports a hardware UART bootloader (BSL) accessible via P2.0 (BSLTX) and P2.1 (BSLRX). This enables field firmware updates over serial without requiring JTAG hardware, and is explicitly documented in the pin diagrams and signal descriptions for the RHA/DA packages.
Which crystal oscillator options are supported by the MSP430FR5857IDAR?
The MSP430FR5857IDAR supports only the high-frequency crystal oscillator (HFXT) - with dedicated HFXIN (PJ.6) and HFXOUT (PJ.7) pins. It does not support LFXT (32.768 kHz), as confirmed by its inclusion in the MSP430FR585x group and absence of LFXIN/LFXOUT pins in its DA/RHA pinouts.
How many ADC input channels does the MSP430FR5857IDAR provide?
The MSP430FR5857IDAR provides 14 external analog input channels (A0–A13) for its 12-bit ADC12_B module, plus 2 internal references. This is explicitly stated in Table 3-1 (Device Comparison) and verified in the signal descriptions for pins P1.0–P1.5, P3.0–P3.3, P4.0–P4.1, and P2.3–P2.4.
MSP430FR5857IDAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 38-TSSOP (0.240", 6.10mm Width)
- Series:
- MSP430™ FRAM
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, IrDA, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 31
- Program Memory Size:
- 32KB (32K 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 12x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR5857IDAR FAQ
1.How can I place an order for MSP430FR5857IDAR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR5857IDAR 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 MSP430FR5857IDAR reliable?
The price and inventory of MSP430FR5857IDAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR5857IDAR is usually 5 days.
3.What payment methods are accepted for MSP430FR5857IDAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR5857IDAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR5857IDAR?
MSP430FR5857IDAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR5857IDAR 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 MSP430FR5857IDAR?
For technical support, including MSP430FR5857IDAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR5857IDAR requirements.
6.How does Aetrix verify that MSP430FR5857IDAR is sourced from the original manufacturer or authorized distributors?
All MSP430FR5857IDAR 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 MSP430FR5857IDAR meets industry standards.
7.What is the process for return or replacement of MSP430FR5857IDAR?
All MSP430FR5857IDAR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR5857IDAR, 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 MSP430FR5857IDAR part is unused and in its original packaging.
Return procedure for MSP430FR5857IDAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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