My Inquiry
My Account
Texas Instruments MSP430FR69791IPZ
- Part No.:
- MSP430FR69791IPZ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430FR69791IPZ.pdf
- Description:
- IC MCU 16BIT 128KB FRAM 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,971
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MSP430FR69791IPZ from Texas Instruments is a 16-bit ultra-low-power FRAM microcontroller featuring 128KB nonvolatile FRAM, 2KB RAM, integrated LCD driver (up to 320 segments), 12-bit ADC with 16 external inputs, and dual eUSCI modules supporting UART/IrDA/SPI/I²C. It operates from 1.8 V to 3.6 V and targets battery-powered utility metering and data logging systems.
For engineers reviewing the MSP430FR69791IPZ datasheet, MSP430FR69791IPZ pinout, MSP430FR69791IPZ application, or MSP430FR69791IPZ equivalent, key selection criteria include FRAM endurance (10¹⁵ writes), RTC current in LPM3.5 (0.35 µA), LCD segment count (320), AES256 encryption coprocessor, and 100-pin LQFP package compatibility with industrial metering layouts.
Technical Context
The MSP430FR69791IPZ implements the MSP430 CPUXV2 core with 16 registers and supports seven low-power modes, including LPM3.5 (RTC active) and LPM4.5 (shutdown at 0.02 µA). Its clock system integrates DCO (10 factory-trimmed frequencies), LFXT (32-kHz crystal), and HFXT (high-frequency crystal support confirmed for this variant).
Peripherals include three 16-bit Timer_A modules (TA0/TA1/TA3), one 16-bit Timer_B (TB0) with seven capture/compare registers, 32-bit hardware multiplier, three-channel DMA, CRC16/CRC32 engines, and capacitive touch I/O on all P1–P10 and PJ ports without external components.
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 code footprint |
| Nonvolatile Memory | 128KB FRAM - provides instant-write, 10¹⁵-cycle endurance, unified memory space for code/data/storage |
| RAM | 2KB SRAM - supports fast variable access and stack operations during active mode |
| ADC | 12-bit SAR ADC with 16 external inputs and internal reference - delivers precision sensor interfacing for metering |
| Low-Power RTC | 0.35 µA typical in LPM3.5 - enables decade-scale battery life in time-stamped data loggers |
| LCD Driver | Supports up to 320 segments with static/2–8 mux - drives high-contrast displays in heat/water meters |
| Security | AES256 encryption/decryption coprocessor - accelerates secure firmware updates and data transmission |
Pinout & Package
Package: 100-pin LQFP (PZ), 14 mm × 14 mm body size, standard JEDEC footprint compatible with industrial PCB assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0–P1.7 | General-purpose I/O with timer/USCI/LCD functions | Support capacitive touch sensing and dual USCI peripheral routing (eUSCI_A0/B0) |
| P6.0–P6.6 | LCD voltage rail and COM outputs | Drive analog LCD bias (V1–V5) and backplane commons (COM0–COM3) for 320-segment display |
| PJ.4/PJ.5 | LFXT crystal interface | Connect 32.768-kHz tuning-fork crystal for RTC accuracy ±20 ppm over –40°C to 85°C |
| PJ.6/PJ.7 | HFXT crystal interface | Enable high-frequency crystal oscillator (4–24 MHz) for precise system clock generation |
| DVCC1–DVCC4 / DVSS1–DVSS4 | Digital power supply pins | Four independent VCC/VSS pairs reduce noise coupling and improve EMI robustness in mixed-signal layouts |
| AVCC1 / AVSS1–AVSS3 | Analog power supply pins | Isolated analog domain supplies ensure 12-bit ADC accuracy and low-noise comparator operation |
Key Features
| Feature | Design Value |
|---|---|
| Ferroelectric RAM (FRAM) | 128KB unified memory with 125 ns write speed - eliminates flash erase delays and wear leveling overhead |
| Ultra-Low-Power Modes | 0.35 µA RTC-active (LPM3.5) and 0.02 µA shutdown (LPM4.5) - extends CR2032 battery life beyond 10 years |
| Integrated LCD Controller | Configurable for static, 2–8 multiplex - drives segment-based displays without external glass drivers or boost converters |
| Capacitive Touch I/O | All P1–P10 and PJ pins support CSD without external components - reduces BOM cost and board area in sealed meter enclosures |
| Hardware Security | Dedicated AES256 engine with true random number seed - enables FIPS-compliant secure boot and encrypted data storage |
Applications
| Water Metering | Heat Cost Allocation |
|---|---|
Use Scenario: Ultrasonic or mechanical flow measurement with hourly consumption logging and tamper detection. IC Role / Device Role / Timing Role: Main controller executing metrology algorithms, managing FRAM-based data history, and driving LCD display. Use Value: 128KB FRAM stores >10 years of hourly readings; RTC maintains accurate timestamps across power loss. | Use Scenario: Apartment-level thermal energy distribution monitoring with temperature differential sampling and billing data retention. IC Role / Device Role / Timing Role: Sensor hub aggregating PT100/NTC inputs, performing delta-T calculations, and storing encrypted usage records. Use Value: AES256 encrypts tenant data; 0.35 µA RTC mode enables 8+ year battery life on coin cells. |
| Portable Medical Logging | Data Acquisition Node |
Use Scenario: Battery-powered blood glucose or ECG event recorder requiring long-term storage and regulatory-compliant security. IC Role / Device Role / Timing Role: Secure data acquisition MCU with FDA-aligned cryptographic integrity and timestamped audit logs. Use Value: FRAM's 10¹⁵ write cycles ensure reliable lifetime logging; AES256 meets IEC 62304 data protection requirements. | Use Scenario: Industrial environmental sensor node collecting temperature, humidity, and pressure with periodic wireless upload. IC Role / Device Role / Timing Role: Low-power host managing sensor interfaces, local buffering, and wake-on-event communication scheduling. Use Value: Three eUSCI modules enable concurrent UART (debug), SPI (sensor), and I²C (EEPROM) without software bit-banging. |
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 |
|---|---|---|---|
| MSP430FR6979IPZ | Same FRAM size (128KB), identical peripherals, but UART-based BSL instead of I²C BSL | Preferred where UART debug interface is mandatory; lacks I²C BSL pin assignment on P1.6/P1.7 | Select when UART bootloader access is required and I²C BSL is unnecessary |
| MSP430FR6977IPZ | 64KB FRAM (half capacity), otherwise identical clock system, timers, LCD, and security features | Suitable for simpler metering designs with reduced data history depth or smaller firmware footprint | Choose for cost-sensitive deployments where 64KB FRAM suffices and full 128KB is unused |
Compared with MSP430FR6979IPZ and MSP430FR6977IPZ, the MSP430FR69791IPZ uniquely combines full 128KB FRAM, I²C BSL capability, and HFXT support-making it optimal for secure, high-accuracy, long-history utility metering where field firmware updates via I²C are mandated.
Availability
MSP430FR69791IPZ is available at Aetrix Electronics and suitable for water metering, heat cost allocation, and portable medical logging requiring stable component supply and long-term industrial lifecycle support.
Supply support for MSP430FR69791IPZ 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 for industrial, automotive, and consumer markets.
The MSP430 ULP FRAM portfolio targets energy-constrained applications such as utility meters and portable instrumentation, combining ferroelectric memory with ultra-low-power architecture to eliminate flash limitations.
FAQ
What is the maximum operating frequency of the MSP430FR69791IPZ?
The MSP430FR69791IPZ supports up to 16 MHz system clock via its factory-trimmed DCO or external HFXT crystal. This frequency enables real-time execution of metrology algorithms and high-speed FRAM writes (125 ns per word) while maintaining sub-100 µA/MHz active-mode efficiency.
Does the MSP430FR69791IPZ support hardware AES encryption?
Yes, the MSP430FR69791IPZ integrates a dedicated AES256 security coprocessor with true random number seed generation. This enables accelerated encryption/decryption of stored data and secure communication payloads without burdening the main CPU-critical for compliance in smart metering deployments.
How many LCD segments can the MSP430FR69791IPZ drive?
The MSP430FR69791IPZ drives up to 320 LCD segments using its integrated LCD_C module with support for static, 2-, 3-, 4-, 6-, or 8-mux configurations. This capability eliminates external LCD drivers in applications like water and heat meters requiring high-information displays.
What crystal frequencies are supported by the MSP430FR69791IPZ for RTC and system clock?
The MSP430FR69791IPZ supports a 32.768-kHz crystal on PJ.4/PJ.5 for RTC operation and a 4–24 MHz crystal on PJ.6/PJ.7 for high-precision system clock generation. Both LFXT and HFXT oscillators are fully implemented and validated in this variant.
Is the MSP430FR69791IPZ pin-compatible with other devices in the FR697x family?
Yes, the MSP430FR69791IPZ in the 100-pin LQFP (PZ) package shares identical pinout and electrical characteristics with MSP430FR6979IPZ and MSP430FR6977IPZ. This allows direct PCB reuse across variants differing only in FRAM size (64KB vs. 128KB) and BSL interface (I²C vs. UART).
MSP430FR69791IPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-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 16x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430FR69791IPZ FAQ
1.How can I place an order for MSP430FR69791IPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430FR69791IPZ 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 MSP430FR69791IPZ reliable?
The price and inventory of MSP430FR69791IPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430FR69791IPZ is usually 5 days.
3.What payment methods are accepted for MSP430FR69791IPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430FR69791IPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430FR69791IPZ?
MSP430FR69791IPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430FR69791IPZ 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 MSP430FR69791IPZ?
For technical support, including MSP430FR69791IPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430FR69791IPZ requirements.
6.How does Aetrix verify that MSP430FR69791IPZ is sourced from the original manufacturer or authorized distributors?
All MSP430FR69791IPZ 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 MSP430FR69791IPZ meets industry standards.
7.What is the process for return or replacement of MSP430FR69791IPZ?
All MSP430FR69791IPZ units undergo pre-shipment inspection (PSI). If there is an issue with MSP430FR69791IPZ, 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 MSP430FR69791IPZ part is unused and in its original packaging.
Return procedure for MSP430FR69791IPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430FR69791IPZ 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…
