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Texas Instruments MSP430F46191IPZ
- Part No.:
- MSP430F46191IPZ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F46191IPZ.pdf
- Description:
- IC MCU 16BIT 120KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,746
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Product details
Overview
MSP430F46191IPZ from Texas Instruments is an ultralow-power 16-bit mixed-signal microcontroller featuring 120KB+256B flash/ROM, 4KB RAM, integrated 160-segment LCD driver with regulated charge pump, dual 16-bit timers (Timer_A3 and Timer_B7), USCI_A0 (UART/IrDA/SPI), USCI_B0 (SPI/I²C), USART1 (UART/SPI), three-channel DMA, and comparator_A. It operates from 1.8 V to 3.6 V and targets portable medical devices and e-metering applications.
For engineers reviewing the MSP430F46191IPZ datasheet, MSP430F46191IPZ pinout, MSP430F46191IPZ application, or MSP430F46191IPZ equivalent, key selection considerations include its 100-pin TQFP package, absence of ADC12 module (vs. MSP430F4619), LCD segment drive capability up to 160 segments, and support for real-time clock via basic timer - all critical for battery-powered metering and display-integrated embedded systems.
Technical Context
The MSP430F46191IPZ implements the MSP430x461x1 family architecture: 16-bit RISC CPUX with constant generators, FLL+ frequency-locked loop, and five low-power modes enabling sub-6 µs wake-up from standby. Its memory-mapped peripherals include dedicated LCD_A controller with COM/SEG routing, USCI modules supporting asynchronous UART, synchronous SPI, IrDA, and I²C protocols, and hardware multiplier for efficient math operations.
Unlike the ADC12-equipped MSP430F4619, the MSP430F46191IPZ omits the 12-bit A/D converter but retains full timer, communication, LCD, and power management functionality. Pin compatibility with MSP430F4619IPZ is maintained except for ADC-related pins (e.g., P6.0–P6.7/A0–A7 retain general I/O or SVSIN function only), and reserved/unused pins (e.g., Terminal 7) are explicitly marked in the pinout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPUX with 16 registers and constant generators; enables single-cycle register ops and high code efficiency. |
| Memory | 120KB+256B flash/ROM + 4KB RAM; supports in-system programming and security fuse protection. |
| Supply Voltage | 1.8 V to 3.6 V; allows direct operation from single Li-ion or two alkaline cells without regulation. |
| Power Consumption | Active mode: 400 µA at 1 MHz/2.2 V; Standby: 1.3 µA; Off mode (RAM retention): 0.22 µA. |
| LCD Driver | Integrated LCD_A controller supporting up to 160 segments with 1–4 multiplexing and regulated charge pump (LCDCPEN). |
| Timers | Timer_A3 (3 capture/compare registers) and Timer_B7 (7 capture/compare registers with shadow registers). |
| Communication | USCI_A0 (UART/IrDA/SPI), USCI_B0 (SPI/I²C), USART1 (UART/SPI); no ADC12 module present. |
Pinout & Package
Package: 100-pin plastic TQFP (PZ), 14 mm × 14 mm, 0.5 mm pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST/NMI | Reset / Nonmaskable Interrupt input | Active-low reset initiation and high-priority interrupt source; required for BSL entry and safe startup. |
| P1.0/TA0 | Timer_A0 capture/compare / BSL transmit | Primary UART TX for bootloader serial interface; also serves as TA0 output or CCI0A input. |
| P1.1/TA0/MCLK | Timer_A0 capture / MCLK output | Provides main system clock output (MCLK) for external timing verification or peripheral sync. |
| P2.7/DMAE0 | DMA channel 0 trigger / general I/O | Enables hardware-triggered DMA transfers without CPU intervention - critical for low-power sensor data streaming. |
| P4.0/UTXD1 & P4.1/URXD1 | USART1 transmit/receive | Dedicated UART interface independent of USCI modules; supports auto-baudrate detection and IrDA. |
| COM0–COM3 & SEG0–SEG39 | LCD backplane and segment outputs | Direct drive of multiplexed LCD glass; COM0–COM3 define backplane signals; SEG0–SEG39 map to physical segments S0–S39. |
| TCK/TMS/TDI/TDO | JTAG debug interface | Full boundary-scan and emulation support via MSP-FET430UIF or compatible tools; enables real-time debugging and flash programming. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-power operation | 0.22 µA off-mode current with RAM retention enables multi-year battery life in sealed metering units. |
| Integrated LCD driver | 160-segment support with internal charge pump eliminates need for external LCD bias IC, reducing BOM count. |
| Dual 16-bit timers | Timer_B7's seven shadow registers allow glitch-free PWM updates during runtime - essential for precise backlight control. |
| Multiple serial interfaces | Three independent serial engines (USCI_A0, USCI_B0, USART1) enable concurrent communication with sensors, displays, and host systems. |
| Real-time clock capability | Basic timer with calendar mode provides accurate timekeeping without external RTC IC - validated for e-meter billing accuracy. |
Applications
| Smart Electricity Meter | Portable Medical Glucometer |
|---|---|
Use Scenario: Utility-grade electricity meter with LCD display, tamper detection, and HART/RS-485 communication. IC Role / Device Role / Timing Role: Main system controller managing energy measurement firmware, LCD refresh, secure firmware updates, and real-time tariff calculation. Use Value: Integrated LCD driver and ultra-low standby current (1.3 µA) extend battery backup life beyond 10 years per IEC 62053-21 requirements. | Use Scenario: Handheld blood glucose monitor with graphical LCD, USB charging, and Bluetooth LE connectivity via external transceiver. IC Role / Device Role / Timing Role: Primary MCU handling strip insertion sensing, analog signal conditioning (via external ADC), LCD rendering, and button-driven UI state machine. Use Value: Sub-6 µs wake-up from standby ensures immediate response to test strip insertion while maintaining <2 µA average system current. |
| Industrial Panel Display | Water/Gas Meter with LCD |
Use Scenario: DIN-rail mounted HMI panel displaying process variables, alarms, and configuration menus in factory environments. IC Role / Device Role / Timing Role: Display controller interfacing with external ADCs, digital I/O expanders, and RS-485 transceivers while driving segmented LCD. Use Value: 100-pin TQFP provides ample GPIO for parallel bus expansion and dedicated USCI_B0 simplifies I²C sensor integration. | Use Scenario: Battery-powered ultrasonic water meter with pulse output, temperature compensation, and 8-digit LCD readout. IC Role / Device Role / Timing Role: System-on-chip managing ultrasonic time-of-flight measurement timing, temperature ADC polling, LCD update, and low-power sleep scheduling. Use Value: Absence of ADC12 is mitigated by external precision ADC; retained LCD_A and timer_B7 enable synchronized segment driving and flow calculation timing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F4619IPZ | Includes ADC12 module (12-bit, 12-channel); identical pinout and memory configuration. | Required when on-chip analog sensing (e.g., voltage/current monitoring) is needed without external ADC. | Select MSP430F4619IPZ if ADC functionality is mandatory; otherwise MSP430F46191IPZ reduces cost and power in display-centric designs. |
| MSP430F5438AIPN | 256KB flash, 16KB RAM, enhanced USCI, but no integrated LCD driver; 80-pin TQFP package. | Suitable for higher-performance applications needing more memory and faster processing, but requires external LCD controller. | Choose MSP430F5438AIPN when scaling firmware complexity beyond 120KB or requiring >16KB RAM; not drop-in due to package and LCD omission. |
Compared with MSP430F4619IPZ, the MSP430F46191IPZ removes ADC12 to reduce die size and static current, making it optimal for LCD-dominant metering where analog inputs are handled externally. Versus MSP430F5438AIPN, it trades memory headroom for integrated display control and lower active power - a deliberate trade-off for long-life, cost-sensitive utility applications.
Availability
MSP430F46191IPZ is available at Aetrix Electronics and suitable for smart electricity meters, portable medical diagnostics, and industrial panel displays requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MSP430F46191IPZ 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 MSP430x461x1 product line targets ultralow-power, display-integrated applications such as utility meters and portable medical devices - emphasizing extended battery life, integrated LCD control, and robust real-time operation.
FAQ
What is the primary functional difference between MSP430F46191IPZ and MSP430F4619IPZ?
The MSP430F46191IPZ omits the ADC12 module present in the MSP430F4619IPZ. All other peripherals - including 120KB+256B flash/ROM, 4KB RAM, LCD_A driver, USCI_A0/B0, USART1, timers, and DMA - are identical. This makes MSP430F46191IPZ ideal for display-focused applications where analog-to-digital conversion is handled externally.
Does MSP430F46191IPZ support real-time clock functionality?
Yes, the MSP430F46191IPZ supports real-time clock (RTC) functionality through its Basic Timer module, which includes calendar mode with alarm and interrupt capabilities. This is fully documented in the MSP430x4xx Family User's Guide and does not require external components - enabling accurate timekeeping in e-metering and data-logging applications.
What LCD configurations does MSP430F46191IPZ support?
The MSP430F46191IPZ supports up to 160 segments with 1-, 2-, 3-, or 4-mux LCD configurations using its integrated LCD_A controller. It includes dedicated COM0–COM3 backplane outputs and segment outputs S0–S39, plus additional segment-capable pins (e.g., P7.2–P7.4, P4.7–P4.6). The regulated charge pump (LCDCPEN) enables operation from a single 3V supply.
Is MSP430F46191IPZ pin-compatible with other MSP430x461x1 devices?
Yes, the MSP430F46191IPZ shares identical pinout and package (100-pin TQFP) with MSP430F46161IPZ, MSP430F46171IPZ, and MSP430F46181IPZ. Differences are limited to flash/ROM size (120KB vs. 92KB/116KB) and RAM (4KB vs. 8KB), allowing hardware reuse across variants during design scaling.
What development tools are supported for MSP430F46191IPZ?
The MSP430F46191IPZ is supported by Texas Instruments' full ecosystem: MSP-FET430UIF (USB JTAG), MSP-TS430PZ100 (target board), and Code Composer Studio IDE. Its Embedded Emulation Module (EEM) enables real-time debugging, flash programming, and low-power mode analysis - critical for validating ultralow-power behavior in final designs.
MSP430F46191IPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- MSP430x4xx
- Packaging:
- Bulk
- 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:
MSP430F46191IPZ FAQ
1.How can I place an order for MSP430F46191IPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F46191IPZ 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 MSP430F46191IPZ reliable?
The price and inventory of MSP430F46191IPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F46191IPZ is usually 5 days.
3.What payment methods are accepted for MSP430F46191IPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F46191IPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F46191IPZ?
MSP430F46191IPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F46191IPZ 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 MSP430F46191IPZ?
For technical support, including MSP430F46191IPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F46191IPZ requirements.
6.How does Aetrix verify that MSP430F46191IPZ is sourced from the original manufacturer or authorized distributors?
All MSP430F46191IPZ 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 MSP430F46191IPZ meets industry standards.
7.What is the process for return or replacement of MSP430F46191IPZ?
All MSP430F46191IPZ units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F46191IPZ, 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 MSP430F46191IPZ part is unused and in its original packaging.
Return procedure for MSP430F46191IPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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