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Texas Instruments MSP430F5503IRGZR
- Part No.:
- MSP430F5503IRGZR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
MSP430F5503IRGZR.pdf
- Description:
- IC MCU 16BIT 32KB FLASH 48VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,245
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Product details
Overview
MSP430F5503IRGZR from Texas Instruments is a 16-bit ultra-low-power mixed-signal microcontroller featuring USB 2.0 full-speed interface, three 16-bit Timer_A modules (5/3/3 capture/compare registers), one 16-bit Timer_B (7 registers), two USCI modules (one UART/IrDA/SPI + one I²C/SPI), comparator (no ADC), 32 KB flash, 4 KB + 2 KB RAM, and 31 GPIOs in a 48-pin VQFN package. It targets USB-connected sensor nodes and portable data loggers requiring sub-2 µA standby current.
For engineers reviewing the MSP430F5503IRGZR datasheet, MSP430F5503IRGZR pinout, MSP430F5503IRGZR application, or MSP430F5503IRGZR equivalent, key selection criteria include USB PHY integration, comparator-only analog front-end, 48-pin RGZ package compatibility, LPM3 RTC retention at 1.9 µA, and port-mapped USCI signal routing on P4.
Technical Context
The MSP430F5503IRGZR implements a unified clock system with FLL stabilization, dual crystal support (XT1 for 32 kHz RTC, XT2 up to 32 MHz), and internal VLO/REFO sources. Its power management includes an integrated LDO with programmable core voltage and supply supervision with brownout detection.
USB functionality is self-contained: integrated USB-PHY, dedicated 3.3-V/1.8-V USB power system, USB-PLL, and eight bidirectional endpoints - eliminating external transceivers. All USCI signals are routed through port mapping controller on P4, limiting simultaneous peripheral use per configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with constant generators and 25-MHz max system clock - enables efficient low-power firmware execution |
| Memory | 32 KB flash + 4 KB + 2 KB RAM - supports complex USB stack and real-time sensor processing with dual SRAM banks |
| USB Interface | Full-speed USB 2.0 with integrated PHY, PLL, and power system - eliminates external components and simplifies USB device design |
| Low-Power Modes | LPM3: 1.9 µA @ 2.2 V with RTC/crystal active; LPM4.5: 0.18 µA - enables multi-year battery life in always-on monitoring |
| Analog Peripherals | Comparator_B (4 channels) only - replaces ADC for threshold detection, window comparison, and wake-on-event sensing |
| Timers | TA0 (5 CC), TA1 (3 CC), TA2 (3 CC), TB0 (7 CC) - provides flexible PWM, capture, and timebase generation for motor control and signal timing |
| I/O & Connectivity | 31 GPIOs with Schmitt-trigger inputs; USCI_A1 (UART/IrDA/SPI) + USCI_B1 (I²C/SPI); all USCI pins mapped via P4 port controller |
Pinout & Package
Package: 48-pin VQFN (RGZ), 7 mm × 7 mm, exposed thermal pad (recommended connection to DVSS).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 6–7, 9–10, 12–13, 15–22, 23–26, 27–28, 29–36, 37, 44–46, 47–48 | GPIO / Peripheral Multiplexed | 31 configurable I/Os supporting timer capture, USCI functions, comparator inputs, and crystal connections - requires port mapping setup for USCI signal assignment |
| 38, 40 | USB Differential Pair (DP/DM) | Direct full-speed USB 2.0 physical layer interface - no external transceiver needed; requires 27-Ω series termination per line |
| 39 | USB Pull-Up Resistor Control (PUR) | Enables/disables internal 1.5-kΩ pull-up on DP to signal USB device speed and connect status to host |
| 41–43, 45–46 | Power Supply Rails | DVCC/DVSS (digital core), AVCC/AVSS (analog), VUSB (3.3 V USB), V18 (1.8 V USB PHY), VCORE (regulated LDO output) - mandates separate filtering and sequencing per rail |
| 47–48 | JTAG/SBW Debug | TEST/SBWTCK and RST/NMI/SBWTDIO enable programming and debugging via Spy-Bi-Wire - no 4-wire JTAG required |
Key Features
| Feature | Design Value |
|---|---|
| Integrated USB 2.0 PHY + PLL + power system | Reduces BOM count by 5+ components and eliminates external clock synthesis for USB operation |
| Comparator_B with 4-channel input mux | Enables precise voltage thresholding, window detection, and wake-on-analog-event without ADC power overhead |
| Port mapping controller on P4 | Allows dynamic reassignment of USCI_A1/B1 signals to P4 pins - increases design flexibility but requires runtime configuration |
| Unified clock system with FLL + XT1/XT2/VLO/REFO | Supports seamless clock source switching and frequency stabilization across operating modes and temperature ranges |
| Three-channel DMA with peripheral trigger support | Offloads CPU during USB data transfers, timer captures, and comparator events - improves real-time responsiveness |
Applications
| USB-Powered Sensor Node | Industrial Data Logger |
|---|---|
Use Scenario: Battery-operated environmental monitor connected directly to PC or industrial gateway via USB cable for configuration and bulk data upload. IC Role / Device Role / Timing Role: Main MCU handling sensor acquisition (via comparator), USB enumeration, HID/CDC class protocol, and RTC-timestamped logging. Use Value: Sub-2 µA LPM3 current extends 10-year coin-cell life; integrated USB PHY avoids level-shifter and oscillator components. | Use Scenario: Standalone temperature/humidity logger deployed in HVAC ducts, recording data every 5 minutes and uploading via USB when docked. IC Role / Device Role / Timing Role: Real-time controller managing comparator-based threshold alerts, RTC alarm wakeups, flash wear-leveling, and USB mass-storage emulation. Use Value: Comparator replaces ADC for binary event detection - cuts active-mode current by ~80 µA vs. ADC sampling at same rate. |
| USB Human Interface Device | Low-Power USB Dongle |
Use Scenario: Wireless headset USB dongle translating proprietary RF commands into USB HID reports for PC gaming peripherals. IC Role / Device Role / Timing Role: USB device controller interfacing with RF SoC over SPI, parsing commands, and generating keyboard/mouse HID reports. Use Value: Dual USCI modules allow concurrent SPI (to RF chip) and USB HID communication - no software polling overhead. | Use Scenario: Compact USB diagnostic dongle for field technicians, connecting to test equipment via comparator-based analog triggers and reporting via CDC ACM. IC Role / Device Role / Timing Role: Signal-conditioning MCU detecting overvoltage/undervoltage events using Comparator_B, then transmitting alerts over USB CDC interface. Use Value: 0.18 µA LPM4.5 shutdown mode enables instant wake-on-USB attach - eliminates manual power switch. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F5504IRGZR | Includes 10-bit ADC (6 external + 2 internal channels); same USB, timers, memory, and package | Required where analog voltage measurement (not just threshold detection) is needed - e.g., battery voltage monitoring | Select MSP430F5504IRGZR if ADC capability is essential; MSP430F5503IRGZR saves power when comparator-only suffices |
| MSP430F5529IPN | 64-pin LQFP; adds ADC10_A (12 ch), more I/O (47 pins), and second USCI_A/B pair - no USB-PHY (requires external transceiver) | Suitable for larger systems needing higher I/O count and analog measurement, but not USB device-class simplicity | Choose MSP430F5529IPN for expanded analog/digital I/O; MSP430F5503IRGZR preferred for minimal USB device footprint and lowest BOM cost |
Compared with MSP430F5504IRGZR, the MSP430F5503IRGZR reduces active analog subsystem power by eliminating ADC bias current, while retaining identical USB performance and timer resources. Against MSP430F5529IPN, it trades I/O and ADC capability for integrated USB PHY, smaller package, and lower system-level component count.
Availability
MSP430F5503IRGZR is available at Aetrix Electronics and suitable for USB-connected sensor nodes, portable data loggers, and low-power human interface devices requiring stable component supply and long-term industrial availability.
Supply support for MSP430F5503IRGZR 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, with leadership in low-power microcontrollers and precision analog technology.
The MSP430F5xx family delivers ultra-low-power mixed-signal MCUs optimized for battery-powered measurement and connectivity applications - specifically targeting USB device-class implementations with minimal external components.
FAQ
What is the primary differentiator of the MSP430F5503IRGZR versus other MSP430F5xx devices?
The MSP430F5503IRGZR uniquely combines full-speed USB 2.0 device capability with an integrated PHY, PLL, and dual-voltage USB power system - all in a 48-pin VQFN package - while omitting the 10-bit ADC found in siblings like the MSP430F5504IRGZR and instead providing a 4-channel comparator for ultra-low-power threshold detection. This makes the MSP430F5503IRGZR ideal for USB-connected applications where analog event triggering suffices and ADC conversion is unnecessary.
Does the MSP430F5503IRGZR support crystal oscillators for both low-frequency and high-frequency timing?
Yes, the MSP430F5503IRGZR supports both 32-kHz watch crystals (XT1) for RTC operation and high-frequency crystals up to 32 MHz (XT2) for system clock generation. The XT1 circuit is fully integrated and operates in LPM3 with RTC enabled, drawing only 1.9 µA at 3 V. XT2 startup and stabilization are managed by the FLL control loop within the unified clock system.
How many USB endpoints does the MSP430F5503IRGZR support, and what types are available?
The MSP430F5503IRGZR supports eight bidirectional USB endpoints: one control endpoint (EP0) and seven configurable IN/OUT endpoints. These support standard USB device classes including CDC ACM (virtual COM port), HID (keyboard/mouse), and MSC (mass storage) - all implemented in firmware using TI's USB stack. Endpoint buffers reside in the dedicated 2 KB USB SRAM.
Can the USCI modules on the MSP430F5503IRGZR operate simultaneously, and how is pin assignment handled?
Both USCI_A1 (UART/IrDA/SPI) and USCI_B1 (I²C/SPI) are present on the MSP430F5503IRGZR, but their physical signals are routed exclusively through port 4 (P4.0–P4.5) using the port mapping controller. While both modules can be active concurrently, their pin assignments must be configured at runtime - and not all signal combinations can be brought out simultaneously due to shared pin resources and mapping constraints.
What is the role of the VCORE pin on the MSP430F5503IRGZR, and how should it be decoupled?
The VCORE pin on the MSP430F5503IRGZR outputs the regulated core voltage (1.8 V nominal) generated by the on-chip LDO. It must be decoupled with a minimum 1-µF ceramic capacitor placed as close as possible to the VCORE and DVSS pins. This ensures stable core voltage under dynamic load conditions - especially critical during USB packet transmission and timer interrupt bursts - and prevents brownout resets during transient current demands.
MSP430F5503IRGZR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 48-VFQFN Exposed Pad
- Series:
- MSP430F5xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPUXV2
- Core Size:
- 16-Bit
- Speed:
- 25MHz
- Connectivity:
- I2C, IrDA, SCI, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 31
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 6K 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:
MSP430F5503IRGZR FAQ
1.How can I place an order for MSP430F5503IRGZR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F5503IRGZR 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 MSP430F5503IRGZR reliable?
The price and inventory of MSP430F5503IRGZR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F5503IRGZR is usually 5 days.
3.What payment methods are accepted for MSP430F5503IRGZR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F5503IRGZR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F5503IRGZR?
MSP430F5503IRGZR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F5503IRGZR 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 MSP430F5503IRGZR?
For technical support, including MSP430F5503IRGZR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F5503IRGZR requirements.
6.How does Aetrix verify that MSP430F5503IRGZR is sourced from the original manufacturer or authorized distributors?
All MSP430F5503IRGZR 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 MSP430F5503IRGZR meets industry standards.
7.What is the process for return or replacement of MSP430F5503IRGZR?
All MSP430F5503IRGZR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F5503IRGZR, 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 MSP430F5503IRGZR part is unused and in its original packaging.
Return procedure for MSP430F5503IRGZR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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