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Texas Instruments MSP430F46191IPZR
- Part No.:
- MSP430F46191IPZR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F46191IPZR.pdf
- Description:
- IC MCU 16BIT 120KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430F46191IPZR from Texas Instruments is an ultralow-power 16-bit mixed-signal microcontroller featuring 120KB+256B Flash/ROM, 4KB RAM, integrated LCD driver for up to 160 segments, dual 16-bit timers (Timer_A3 and Timer_B7), USCI_A0 (UART/IrDA/SPI), USCI_B0 (SPI/I²C), USART1 (UART/SPI), DMA controller with three channels, and a comparator. It operates from 1.8 V to 3.6 V and targets portable medical devices and electronic metering applications.
For engineers reviewing the MSP430F46191IPZR datasheet, MSP430F46191IPZR pinout, MSP430F46191IPZR application, or MSP430F46191IPZR equivalent, key selection criteria include LCD segment count support, absence of ADC12 module, 100-pin TQFP package compatibility, low-power mode wake-up time (<6 µs), and USCI peripheral configuration flexibility.
Technical Context
The MSP430F46191IPZR implements the MSP430x461x1 family architecture, which omits the ADC12 module present in the MSP430x461x variants while retaining all other peripherals: dual 16-bit timers with capture/compare registers, hardware multiplier, real-time clock-capable basic timer, and full USCI_A0/USCI_B0/USART1 serial interface suite. Its CPUX core executes instructions in one cycle at up to 8 MHz via FLL+ frequency synthesis.
Power management is centered on five low-power modes (LPM0–LPM4), with standby current at 1.3 µA and off-mode (RAM retention) at 0.22 µA. The regulated LCD charge pump supports up to 4-mux operation, and SVS/SVM circuitry provides programmable supply voltage supervision with SVSIN input on P6.7.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUX with 16 general-purpose registers and constant generators; enables single-cycle register operations and high code efficiency. |
| Memory | 120KB+256B Flash/ROM + 4KB RAM; sufficient for complex embedded firmware with LCD UI and communication stacks. |
| Supply Voltage | 1.8 V to 3.6 V; compatible with single-cell Li-ion, two-cell alkaline, or regulated 3.3 V rails without level shifting. |
| Low-Power Modes | Five configurable modes (LPM0–LPM4); standby current 1.3 µA and off-mode (RAM retention) 0.22 µA enable multi-year battery life. |
| LCD Driver | Integrated LCD_A module supporting up to 160 segments with 1/2–1/4 bias and regulated charge pump; eliminates external LCD bias IC. |
| Wake-Up Time | <6 µs from standby to active mode; meets fast-response requirements in metering and sensor wake-on-event systems. |
| Serial Interfaces | USCI_A0 (UART/IrDA/SPI), USCI_B0 (SPI/I²C), USART1 (UART/SPI); provides concurrent wired and wireless protocol support. |
Pinout & Package
Package: 100-pin TQFP (PZ), 14 mm × 14 mm, 0.5 mm pitch, RoHS-compliant. Thermal pad exposed on underside for enhanced heat dissipation in sealed metering enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Nonmaskable Interrupt input | Active-low reset initiation and high-priority interrupt source; essential for system recovery and fault handling. |
| P1.0/TA0 | Timer_A Capture/Compare 0 / BSL transmit | Primary PWM output or BSL UART TX pin; enables in-system programming without dedicated debug header. |
| P2.7/DMAE0 | DMA Channel 0 external trigger | Hardware-synchronized data transfers (e.g., LCD refresh or UART RX buffer fill) without CPU intervention. |
| P7.0/UCA0STE/S33 | USCI_A0 slave transmit enable / LCD segment 33 | Enables SPI master-slave handshaking or drives LCD segment in multiplexed display configurations. |
| COM0–COM3 | LCD backplane outputs | Four common outputs supporting 1/2–1/4 bias LCDs; used with up to 40 segments per COM for 160-segment total. |
| TCK/TMS/TDI/TDO | JTAG test interface | Fully compliant IEEE 1149.1 boundary-scan for production testing and debug; supports MSP-FET430UIF programmers. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-power operation | 0.22 µA off-mode current with RAM retention extends battery life in portable meters and medical sensors. |
| Integrated LCD driver | Regulated charge pump and 160-segment support eliminate external bias circuitry, reducing BOM cost and PCB area. |
| Dual 16-bit timers | Timer_A3 (3 capture/compare) and Timer_B7 (7 capture/compare with shadow registers) enable simultaneous PWM, capture, and RTC functions. |
| Multi-protocol serial interfaces | USCI_A0, USCI_B0, and USART1 allow concurrent IrDA remote readout, I²C sensor interfacing, and UART host communication. |
| Hardware DMA controller | Three-channel DMA automates memory transfers for LCD refresh, UART buffering, and timer-based data logging-reducing CPU load by >40%. |
Applications
| Smart Electricity Meter | Portable Blood Glucose Monitor |
|---|---|
Use Scenario: Utility-grade meter with real-time energy calculation, tamper detection, and optical IR port for field readout. IC Role / Device Role / Timing Role: Main system controller managing metrology engine interface, LCD display, IrDA encoder/decoder, and secure firmware updates. Use Value: Integrated IrDA PHY and 160-segment LCD driver reduce component count by 3 ICs versus discrete solutions. | Use Scenario: Battery-powered handheld device displaying glucose readings, storing historical trends, and syncing via UART to smartphone apps. IC Role / Device Role / Timing Role: Central MCU executing sensor signal processing, LCD UI rendering, and low-power UART communication during sync windows. Use Value: 0.22 µA off-mode current enables >3-year shelf life with CR2032 coin cell; 4KB RAM accommodates 30-day trend storage. |
| Water/Gas Flow Meter | Industrial Panel Display |
Use Scenario: Hermetically sealed ultrasonic flow meter operating in harsh environments with temperature compensation and pulse output. IC Role / Device Role / Timing Role: Primary controller acquiring analog sensor data (via external ADC), computing flow rate, driving segmented LCD, and generating calibrated pulse outputs. Use Value: Dual 16-bit timers provide precise pulse-width modulation for flow calibration pulses and accurate time-of-flight measurement timing. | Use Scenario: DIN-rail mounted HMI for HVAC control with local parameter adjustment, alarm indicators, and status reporting via RS-485. IC Role / Device Role / Timing Role: Standalone display processor receiving Modbus RTU commands over USART1 and updating LCD content using internal DMA-refreshed buffers. Use Value: USCI_B0 I²C interface connects to local temperature/humidity sensors; regulated LCD charge pump ensures stable contrast across -40°C to +85°C range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F4619IPZR | Includes ADC12 module (12-bit, 12-channel); otherwise identical memory, timers, LCD, and serial interfaces. | Required when analog sensor acquisition (e.g., voltage/current monitoring in meters) is needed on-chip. | Select MSP430F4619IPZR if ADC functionality is required; MSP430F46191IPZR reduces cost and power when external ADC or no analog sensing is used. |
| MSP430F5639IPZR | Higher-performance 25 MHz CPU, 256 KB Flash, USB 2.0 PHY, but no integrated LCD driver and higher active current (160 µA/MHz). | Suitable for USB-connected HMIs or data loggers where LCD is replaced by graphical display and USB host connectivity is mandatory. | Choose MSP430F5639IPZR only when USB interface or >120 KB code space is critical; MSP430F46191IPZR remains optimal for LCD-centric, ultra-low-power metering. |
Compared with MSP430F4619IPZR, the MSP430F46191IPZR removes ADC12 to lower cost and static power, while matching all LCD, timer, and serial capabilities; versus MSP430F5639IPZR, it trades USB and speed for superior LCD integration and sub-µA sleep currents essential in battery-operated utility meters.
Availability
MSP430F46191IPZR is available at Aetrix Electronics and suitable for smart electricity metering, portable medical diagnostics, and industrial panel display applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MSP430F46191IPZR 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 specializing in analog, embedded processing, and digital signal processing technologies with over 50 years of innovation in low-power design.
The MSP430x461x1 product line was engineered specifically for ultralow-power, LCD-driven metering and portable instrumentation applications where extended battery life and integrated human-interface peripherals are critical.
FAQ
Does the MSP430F46191IPZR include an analog-to-digital converter?
No, the MSP430F46191IPZR does not include the ADC12 module. As confirmed in the datasheet footnote, the "1" suffix denotes omission of the 12-bit ADC while retaining all other peripherals-including USCI_A0, USCI_B0, USART1, LCD_A, timers, and DMA. For designs requiring on-chip analog conversion, the pin-compatible MSP430F4619IPZR is the functional alternative.
What is the maximum LCD segment count supported by the MSP430F46191IPZR?
The MSP430F46191IPZR supports up to 160 LCD segments using its integrated LCD_A module with 1/2–1/4 bias capability and regulated charge pump. This is achieved via 4 COM lines (COM0–COM3) and up to 40 SEG lines per COM, as verified in the functional block diagram and terminal function tables for the MSP430x461x1 series.
Which development tools are compatible with the MSP430F46191IPZR?
The MSP430F46191IPZR is fully supported by Texas Instruments' MSP-FET430UIF (USB JTAG programmer), MSP-TS430PZ100 target board, and Code Composer Studio IDE. Its Embedded Emulation Module (EEM) enables real-time debugging, flash programming, and low-power mode profiling-verified in the "Development Tool Support" section of the SLAS675 datasheet.
What is the wake-up time from LPM3 standby mode for the MSP430F46191IPZR?
The MSP430F46191IPZR wakes up from standby mode (LPM3) in less than 6 µs, as specified in the absolute maximum ratings and electrical characteristics tables of the SLAS675 datasheet. This rapid wake-up is enabled by the FLL+ oscillator architecture and applies across the full 1.8 V–3.6 V supply range.
Is the MSP430F46191IPZR pin-compatible with the MSP430F4619IPZR?
Yes, the MSP430F46191IPZR is pin-compatible with the MSP430F4619IPZR. Both use the same 100-pin TQFP (PZ) package and share identical pin assignments, power domains (DVCC1/DVCC2, AVCC/AVSS), and peripheral mappings-confirmed by side-by-side comparison of the "MSP430x461xIPZ" and "MSP430x461x1IPZ" pin designation tables in the datasheet.
MSP430F46191IPZR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- MSP430x4xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUX
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- I2C, IrDA, SCI, SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, DMA, LCD, POR, PWM, WDT
- Number of I/O:
- 80
- Program Memory Size:
- 120KB (120K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 4K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430F46191IPZR FAQ
1.How can I place an order for MSP430F46191IPZR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F46191IPZR 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 MSP430F46191IPZR reliable?
The price and inventory of MSP430F46191IPZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F46191IPZR is usually 5 days.
3.What payment methods are accepted for MSP430F46191IPZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F46191IPZR transactions.
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4.How is shipping managed for MSP430F46191IPZR?
MSP430F46191IPZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F46191IPZR 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 MSP430F46191IPZR?
For technical support, including MSP430F46191IPZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F46191IPZR requirements.
6.How does Aetrix verify that MSP430F46191IPZR is sourced from the original manufacturer or authorized distributors?
All MSP430F46191IPZR 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 MSP430F46191IPZR meets industry standards.
7.What is the process for return or replacement of MSP430F46191IPZR?
All MSP430F46191IPZR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F46191IPZR, 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 MSP430F46191IPZR part is unused and in its original packaging.
Return procedure for MSP430F46191IPZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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