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Texas Instruments MSP430F4491IPZ
- Part No.:
- MSP430F4491IPZ
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
MSP430F4491IPZ.pdf
- Description:
- IC MCU 16BIT 60KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,678
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Product details
Overview
MSP430F4491IPZ from Texas Instruments is an ultralow-power 16-bit mixed-signal microcontroller featuring 60KB+256B flash memory, 2KB RAM, integrated 160-segment LCD driver, dual USARTs, and seven-channel Timer_B with shadow registers. It operates from 1.8 V to 3.6 V and supports battery-powered portable instrumentation with active-mode current of 280 µA at 1 MHz and wake-up from standby in under 6 µs.
For engineers reviewing the MSP430F4491IPZ datasheet, MSP430F4491IPZ pinout, MSP430F4491IPZ application, or MSP430F4491IPZ equivalent, key selection considerations include its PZ-package (100-pin QFP) footprint, absence of ADC12 module, dual-serial interface capability, and LCD segment drive strength for industrial metering and handheld displays.
Technical Context
The MSP430F4491IPZ implements a 16-bit RISC CPU with constant generators and a digitally controlled oscillator (DCO), enabling sub-6-µs wake-up from standby mode. Its architecture includes two 16-bit timers-Timer_A with three capture/compare registers and Timer_B with seven capture/compare registers plus shadow registers-supporting precise PWM, input capture, and waveform generation.
It integrates a hardware multiplier (MPY/MPYS/MAC/MACS), on-chip comparator, brownout detector, supply voltage supervisor with programmable level detection, and serial onboard programming without external voltage. The device lacks the ADC12 module per family documentation, distinguishing it from non-"1" variants like MSP430F449IPZ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 125-ns instruction cycle time and hardware multiplier |
| Memory | 60KB+256B flash + 2KB RAM - sufficient for complex sensor processing and display control firmware |
| Supply Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion or dual-cell alkaline battery systems |
| Power Consumption | 280 µA active @ 1 MHz/2.2 V; 1.1 µA standby; 0.1 µA off-mode with RAM retention |
| LCD Driver | Supports up to 160 segments with 1–4 multiplexing - enables high-resolution alphanumeric or custom segment displays |
| Serial Interfaces | Two USARTs (USART0 and USART1), each configurable as UART or SPI - enables dual-protocol connectivity |
| Timers | Timer_A3 (3 CC regs) + Timer_B7 (7 CC regs with shadow registers) - supports multi-channel PWM, event timing, and capture |
Pinout & Package
Package: 100-pin plastic quad flat pack (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; essential for system recovery and fault handling |
| P1.0/TA0 | Timer_A Capture/Compare 0 / BSL Transmit | Primary timer channel and bootloader communication pin - enables in-system programming via UART |
| P2.4/UTXD0 & P2.5/URXD0 | USART0 Transmit/Receive Data | Dedicated UART interface for host communication or sensor data streaming |
| P4.0/UTXD1 & P4.1/URXD1 | USART1 Transmit/Receive Data | Second independent UART channel - supports dual-interface applications such as debug + fieldbus |
| P3.4–P3.7 & P4.2–P4.5 | Timer_B3–TB6 / USART1 Control Signals | Seven-channel Timer_B outputs and USART1 clock/control pins - enable synchronized multi-peripheral timing |
| COM0–COM3 & S0–S39 | LCD Backplane & Segment Outputs | Four common outputs and 40 segment drivers - directly drive 160-segment LCD without external bias circuitry |
| TCK/TMS/TDO/TDI | JTAG Debug Interface | Fully compliant IEEE 1149.1 boundary-scan interface - supports real-time debugging and flash programming |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-Power Operation | Five power-saving modes with sub-6-µs wake-up - extends battery life in portable meters and remote sensors |
| Dual USART Support | Independent UART/SPI configuration per interface - eliminates need for external protocol translators in dual-communication designs |
| Integrated LCD Driver | 160-segment drive with software-configurable mux ratio - reduces BOM cost and PCB area versus discrete LCD controllers |
| Hardware Multiplier | MPY/MPYS/MAC/MACS instructions - accelerates math-intensive tasks like FFT, filtering, and calibration compensation |
| On-Chip Comparator | Comparator_A with internal reference - enables analog threshold detection without external op-amps or ADC overhead |
Applications
| Handheld Energy Meter | Industrial Panel Display |
|---|---|
Use Scenario: Battery-powered electricity meter measuring voltage, current, and energy consumption in utility field deployments. IC Role / Device Role / Timing Role: Central controller managing sampling timing, LCD refresh, UART-based data upload, and low-power sleep scheduling. Use Value: 0.1 µA off-mode with RAM retention preserves configuration during battery replacement; 160-segment LCD drive eliminates external display IC. | Use Scenario: Local HMI on factory automation equipment showing status, alarms, and setpoints with minimal external components. IC Role / Device Role / Timing Role: Standalone display controller interfacing with PLC via UART while driving segmented LCD and monitoring pushbutton inputs. Use Value: Dual USARTs allow simultaneous connection to PLC (USART0) and service port (USART1); Timer_B7 enables precise backlight PWM dimming. |
| Portable Gas Detector | Smart Thermostat Display |
Use Scenario: Wearable gas sensor logging CO, H₂S, or O₂ levels with audible alarm and LCD readout. IC Role / Device Role / Timing Role: Sensor signal conditioning coordinator, alarm trigger processor, and LCD update engine using integrated comparator and timers. Use Value: On-chip comparator detects threshold breaches without ADC conversion latency; 1.1 µA standby enables multi-month operation on coin cell. | Use Scenario: Residential thermostat with segmented LCD showing temperature, mode, and schedule, powered by AA batteries. IC Role / Device Role / Timing Role: Primary MCU handling button scan, temperature reading, LCD refresh, and wireless module wake-up signaling. Use Value: Integrated LCD driver supports 4-mux configuration for crisp 4-digit display; hardware multiplier speeds up PID loop calculations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F449IPZ | Includes ADC12 module (12-bit, 8-channel); otherwise identical flash/RAM/timers/peripherals | Required when analog sensor signal digitization is needed on-chip; not suitable if ADC is handled externally | Select MSP430F449IPZ only when ADC functionality is required; MSP430F4491IPZ reduces cost and simplifies layout where ADC is omitted |
| MSP430F5438AIPZ | Higher performance (25 MHz), 256KB flash, USB interface, but no integrated LCD driver and higher active current (170 µA/MHz) | Better suited for USB-connected devices or applications needing larger code space; lacks native LCD support | Choose MSP430F5438AIPZ for USB host/device roles or larger firmware; retain MSP430F4491IPZ for LCD-centric, ultra-low-power metering |
Compared with MSP430F449IPZ, the MSP430F4491IPZ removes ADC12 to reduce cost and power, while retaining full LCD, timer, and dual-serial capability; versus MSP430F5438AIPZ, it trades USB and speed for lower quiescent current and built-in display control - making it optimal for self-contained, battery-operated LCD instruments.
Availability
MSP430F4491IPZ is available at Aetrix Electronics and suitable for handheld instrumentation, industrial HMIs, and portable environmental monitors requiring stable component supply across long production lifecycles.
Supply support for MSP430F4491IPZ 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 connectivity technologies with over 50 years of innovation in low-power design.
The MSP430x44x1 product line targets ultra-low-power portable measurement systems, emphasizing extended battery life, integrated LCD control, and robust mixed-signal peripheral integration for metering and display applications.
FAQ
What is the primary functional difference between MSP430F4491IPZ and MSP430F449IPZ?
The MSP430F4491IPZ omits the ADC12 module present in the MSP430F449IPZ, while retaining identical flash (60KB+256B), RAM (2KB), timers, dual USARTs, and LCD driver. This makes the MSP430F4491IPZ suitable for applications where analog-to-digital conversion is performed externally or not required, reducing cost and power consumption.
Does MSP430F4491IPZ support in-system programming without external voltage?
Yes, the MSP430F4491IPZ supports serial onboard programming (BSL) via UART using only the standard supply voltage (1.8–3.6 V). No external programming voltage is needed, and the BSL is accessible through P1.0 (TXD) and P1.1 (RXD) pins, enabling field firmware updates.
How many LCD segments can MSP430F4491IPZ drive, and what mux configurations are supported?
The MSP430F4491IPZ drives up to 160 segments using four common outputs (COM0–COM3) and 40 segment outputs (S0–S39). It supports 1-, 2-, 3-, and 4-mux LCD configurations, allowing flexible display design from simple numeric readouts to custom alphanumeric panels without external bias generation.
What are the key power modes and their typical current draw for MSP430F4491IPZ?
The MSP430F4491IPZ offers five power modes: Active (280 µA @ 1 MHz/2.2 V), LPM0 (70 µA), LPM1 (25 µA), LPM3 (1.1 µA standby), and LPM4 (0.1 µA off-mode with RAM retention). These enable aggressive power gating in battery-powered applications while preserving critical state across sleep cycles.
Is MSP430F4491IPZ pin-compatible with other devices in the MSP430x44x family?
Yes, the MSP430F4491IPZ shares the same 100-pin PZ package and pinout with MSP430F447IPZ, MSP430F448IPZ, MSP430F4481IPZ, and MSP430F449IPZ. This allows direct PCB reuse across variants - for example, upgrading to ADC-enabled versions or downgrading to smaller-memory options without layout changes.
MSP430F4491IPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 100-LQFP
- Series:
- MSP430x4xx
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 8MHz
- Connectivity:
- SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, LCD, POR, PWM, WDT
- Number of I/O:
- 48
- Program Memory Size:
- 60KB (60K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 2K 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:
MSP430F4491IPZ FAQ
1.How can I place an order for MSP430F4491IPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F4491IPZ 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 MSP430F4491IPZ reliable?
The price and inventory of MSP430F4491IPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F4491IPZ is usually 5 days.
3.What payment methods are accepted for MSP430F4491IPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F4491IPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F4491IPZ?
MSP430F4491IPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F4491IPZ 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 MSP430F4491IPZ?
For technical support, including MSP430F4491IPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F4491IPZ requirements.
6.How does Aetrix verify that MSP430F4491IPZ is sourced from the original manufacturer or authorized distributors?
All MSP430F4491IPZ 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 MSP430F4491IPZ meets industry standards.
7.What is the process for return or replacement of MSP430F4491IPZ?
All MSP430F4491IPZ units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F4491IPZ, 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 MSP430F4491IPZ part is unused and in its original packaging.
Return procedure for MSP430F4491IPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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