My Inquiry
My Account
Texas Instruments MSP430FR69791IPN
- Part No.:
- MSP430FR69791IPN
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 80-LQFP
- Datasheet:
-
MSP430FR69791IPN.pdf
- Description:
- IC MCU 16BIT 128KB FRAM 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,306
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430FR69791IPN from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring 128KB FRAM, 2KB RAM, 12-bit ADC with 16 external inputs, integrated LCD driver for up to 320 segments, and dual eUSCI modules supporting UART, I²C, and SPI. It operates from 1.8 V to 3.6 V and targets battery-powered metering applications requiring RTC, security, and capacitive touch.
For engineers reviewing the MSP430FR69791IPN datasheet, MSP430FR69791IPN pinout, MSP430FR69791IPN application, or MSP430FR69791IPN equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), LPM3.5 RTC current (0.35 µA), AES256 encryption coprocessor, 80-pin LQFP package, and I²C bootloader support.
Technical Context
The MSP430FR69791IPN integrates a 16-bit CPUXV2 core with FRAM-based unified memory architecture, enabling simultaneous code execution and data logging without erase cycles. Its clock system includes DCO, LFXT (32 kHz crystal), and HFXIN/HFXOUT pins - confirmed active per device family documentation and functional block diagram.
It features two independent eUSCI_A modules (UART/IrDA/SPI) and two eUSCI_B modules (I²C/SPI), with hardware UART and I²C bootloaders. The device supports capacitive touch on all P1–P10 and PJ ports without external components, and includes a 32-bit CRC engine compliant with ISO-3309 and CCITT standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUXV2, up to 16-MHz operation - enables deterministic real-time control with low cycle count per instruction. |
| Nonvolatile Memory | 128KB FRAM - provides instant-write, 10¹⁵ write-cycle endurance, and unified program/data/storage space. |
| RAM | 2KB SRAM - used for stack, variables, and high-speed buffering; retained in LPM3. |
| ADC | 12-bit ADC12_B with 16 external inputs and internal reference - supports precision sensor interfacing with configurable sample-and-hold. |
| LCD Driver | Integrated LCD_C supporting up to 320 segments with static/2–8 mux - eliminates external display controller in metering UIs. |
| Low-Power Modes | LPM3.5 RTC current = 0.35 µA (typical) - enables multi-year battery life in always-on timekeeping applications. |
| Security | AES256 encryption/decryption coprocessor - accelerates secure firmware updates and data-at-rest protection. |
Pinout & Package
The MSP430FR69791IPN is housed in an 80-pin LQFP (PN) package measuring 12 mm × 12 mm, with exposed thermal pad not connected per TI mechanical data. Pin functions are validated per Figure 4-2 and Table 4-1 of SLAS797C Rev. C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0–P1.7 | General-purpose I/O with capacitive touch, timer, USCI, and analog functions | Supports wake-up from LPM on edge, LCD segment drive, and BSL interface (I²C mode on P1.6/P1.7). |
| P6.0–P6.6 | LCD common and voltage rail outputs (COM0–COM3, R23, R13, LCDCAP) | Directly drives up to 8 LCD backplanes; enables bias generation for 320-segment displays without external resistors. |
| PJ.4 / PJ.5 | LFXT input/output (LFXIN / LFXOUT) | Connects to 32-kHz crystal for RTC accuracy; required for LPM3.5 operation and calendar functionality. |
| PJ.6 / PJ.7 | HFXIN / HFXOUT | Supports high-frequency crystal oscillator up to 24 MHz - enabled in MSP430FR697x family including MSP430FR69791IPN. |
| RST/NMI/SBWTDIO | Reset, non-maskable interrupt, and Spy-Bi-Wire debug I/O | Enables single-wire programming and debugging; NMI supports critical event handling (e.g., tamper detection). |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 128KB unified memory with 125 ns/word write speed and radiation resistance - eliminates flash wear-out in frequent data-logging systems. |
| Real-Time Clock (RTC) | Calendar mode with alarm, powered in LPM3.5 at 0.35 µA - sustains accurate timekeeping during multi-year battery operation. |
| Capacitive Touch I/O | All P1–P10 and PJ pins support touch sensing without external RC networks - reduces BOM cost and PCB area in user-interface designs. |
| Dual eUSCI Modules | eUSCI_A0/A1 (UART/IrDA/SPI) + eUSCI_B0/B1 (I²C/SPI) - enables concurrent communication with sensors (I²C), host MCU (UART), and peripherals (SPI). |
| Hardware Security | Dedicated AES256 coprocessor with true random number seed - offloads encryption from CPU and ensures cryptographically secure key generation. |
Applications
| Water Metering | Heat Cost Allocation |
|---|---|
Use Scenario: Ultrasonic or mechanical flow measurement with pulse accumulation, temperature compensation, and wireless data upload. IC Role / Device Role / Timing Role: Primary system controller managing sensor acquisition, FRAM-based log storage, RTC-timestamped events, and sub-GHz RF communication via SPI. Use Value: 128KB FRAM enables decade-long hourly consumption logs; LPM3.5 RTC ensures ±2 ppm accuracy over temperature for billing compliance. | Use Scenario: Apartment-level thermal energy distribution monitoring using radiator-mounted sensors and local display. IC Role / Device Role / Timing Role: Integrated metering SoC handling temperature ADC sampling, LCD segment driving (240 seg), capacitive button interface, and secure data export. Use Value: On-chip LCD_C driver eliminates display controller IC; AES256 secures tenant usage data against tampering. |
| Portable Medical Logging | Data Acquisition Node |
Use Scenario: Battery-powered glucose monitor or blood pressure cuff with trend analysis and Bluetooth LE gateway interface. IC Role / Device Role / Timing Role: Sensor hub aggregating analog front-end signals, performing calibration math via 32-bit hardware multiplier, and storing results in FRAM. Use Value: 2KB RAM + FRAM allows real-time signal processing and crash-proof logging; 0.4 µA LPM3 standby extends battery to >5 years. | Use Scenario: Industrial environmental sensor node collecting temperature, humidity, and CO₂ with periodic cloud upload via cellular modem. IC Role / Device Role / Timing Role: Low-power host MCU managing multi-channel ADC, CRC32 integrity checks, and SPI-controlled modem power sequencing. Use Value: CRC32 engine (ISO-3309) validates sensor data before transmission; DMA + three timers enable precise multi-sensor scheduling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power FRAM microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430FR6979IPN | 128KB FRAM, UART BSL, HFXIN/HFXOUT enabled | Targeted for designs requiring high-frequency crystal support and UART-based field updates | Select when UART bootloader and HF crystal timing are mandatory; shares same 80-pin LQFP footprint. |
| MSP430FR6977IPN | 64KB FRAM, identical package and peripheral set except reduced memory | Suitable for cost-sensitive metering where full 128KB logging depth is unnecessary | Drop-in replacement with no layout change; ideal for scaled-down versions of same product family. |
Compared with MSP430FR6979IPN and MSP430FR6977IPN, the MSP430FR69791IPN uniquely combines 128KB FRAM with I²C bootloader support - enabling secure, low-pin-count firmware updates in space-constrained designs where UART pins are unavailable.
Availability
MSP430FR69791IPN is available at Aetrix Electronics and suitable for water metering, heat cost allocation, and portable medical logging requiring stable component supply across extended production lifecycles.
Supply support for MSP430FR69791IPN 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 consumer markets.
The MSP430 ULP FRAM portfolio targets energy-constrained applications such as utility meters and portable instrumentation, combining FRAM endurance, sub-µA low-power modes, and integrated analog peripherals.
FAQ
What is the maximum operating frequency of the MSP430FR69791IPN?
The MSP430FR69791IPN supports a maximum system clock frequency of 16 MHz via its factory-trimmed DCO or external HFXT oscillator. This frequency is fully supported across all operating voltage ranges (1.8 V to 3.6 V) and enables deterministic real-time response for time-critical metering tasks while maintaining ultra-low active-mode current (~100 µA/MHz).
Does the MSP430FR69791IPN support hardware AES encryption?
Yes, the MSP430FR69791IPN includes a dedicated 128-bit or 256-bit AES security coprocessor with true random number seed generation. This hardware accelerator performs encryption and decryption independently of the CPU, reducing latency and power consumption during secure firmware updates or encrypted sensor data storage in FRAM.
How many LCD segments can the MSP430FR69791IPN drive?
The MSP430FR69791IPN integrates the LCD_C module capable of driving up to 320 segments in static, 2-, 3-, 4-, 6-, or 8-mux configurations. Its 80-pin LQFP package exposes sufficient COM and SEG lines (including P6.x, P2.x, P10.x, and PJ.x) to implement full 320-segment displays without external segment drivers.
What bootloader interface does the MSP430FR69791IPN use?
The MSP430FR69791IPN implements an I²C-based hardware bootloader (BSL), activated using P1.6 (BSLSDA) and P1.7 (BSLSCL). Unlike UART-BSL variants, this configuration requires only two pins and supports secure firmware updates over I²C, aligning with designs prioritizing pin count and protocol compatibility.
Is the HFXIN/HFXOUT oscillator functional in the MSP430FR69791IPN?
Yes, the MSP430FR69791IPN fully supports the high-frequency crystal oscillator with dedicated HFXIN (PJ.6) and HFXOUT (PJ.7) pins. This capability is confirmed in the functional block diagram, device comparison table, and signal descriptions for the MSP430FR697x1 family - distinguishing it from MSP430FR692x devices where HFXT is omitted.
MSP430FR69791IPN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 80-LQFP
- Series:
- MSP430™ FRAM
- Packaging:
- Tray
- 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, LCD, POR, PWM, WDT
- Number of I/O:
- 63
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FRAM
- EEPROM Size:
- -
- RAM Size:
- 2K 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:
MSP430FR69791IPN FAQ
1.How can I place an order for MSP430FR69791IPN through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR69791IPN 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 MSP430FR69791IPN reliable?
The price and inventory of MSP430FR69791IPN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR69791IPN is usually 5 days.
3.What payment methods are accepted for MSP430FR69791IPN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR69791IPN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR69791IPN?
MSP430FR69791IPN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR69791IPN 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 MSP430FR69791IPN?
For technical support, including MSP430FR69791IPN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR69791IPN requirements.
6.How does Aetrix verify that MSP430FR69791IPN is sourced from the original manufacturer or authorized distributors?
All MSP430FR69791IPN 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 MSP430FR69791IPN meets industry standards.
7.What is the process for return or replacement of MSP430FR69791IPN?
All MSP430FR69791IPN units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR69791IPN, 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 MSP430FR69791IPN part is unused and in its original packaging.
Return procedure for MSP430FR69791IPN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430FR69791IPN 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…
