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Texas Instruments MSP430F2003IN
- Part No.:
- MSP430F2003IN
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
MSP430F2003IN.pdf
- Description:
- IC MCU 16BIT 1KB FLASH 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:269
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Product details
Overview
MSP430F2003IN from Texas Instruments is an ultra-low-power 16-bit mixed-signal microcontroller featuring 1 KB + 256 B flash memory, 128 B RAM, and a 16-bit Sigma-Delta A/D converter with differential PGA inputs and internal reference. It operates from 1.8 V to 3.6 V and supports five power-saving modes, enabling sub-1 µs wake-up from standby - ideal for battery-powered sensor front ends and portable measurement systems.
For engineers reviewing the MSP430F2003IN datasheet, MSP430F2003IN pinout, MSP430F2003IN application, or MSP430F2003IN equivalent, key selection considerations include its 16-bit SD16_A ADC resolution, Spy-Bi-Wire debug interface, TSSOP-14/PDIP-14 package options, and family-specific DCO calibration data for 1/8/12/16 MHz operation.
Technical Context
The MSP430F2003IN implements a 16-bit RISC CPU with constant generators and seven addressing modes, executing instructions in 62.5 ns at 16 MHz. Its basic clock module integrates a digitally controlled oscillator (DCO), internal low-frequency oscillator, and 32-kHz crystal support - all configurable via software-selectable LPM0–LPM4 modes.
It features a dedicated SD16_A peripheral with differential analog inputs (A0± to A3±), programmable gain, internal reference, and oversampling capability. The USI module supports both SPI and I2C protocols using shared pins P1.4–P1.7, while Timer_A2 provides two capture/compare registers for PWM, interval timing, and input capture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and 62.5-ns instruction cycle at 16 MHz |
| Flash / RAM | 1 KB + 256 B flash (segmented erase), 128 B RAM - sufficient for compact firmware with calibration data storage |
| ADC Type & Resolution | 16-bit Sigma-Delta A/D converter (SD16_A) with differential PGA inputs and internal reference - enables high-precision sensor signal digitization without external op-amps |
| Operating Voltage | 1.8 V to 3.6 V - compatible with single-cell Li-ion, alkaline, or coin-cell power sources |
| Ultra-Low Power | Standby mode: 0.5 µA; Off mode (RAM retention): 0.1 µA - extends battery life in intermittent-sensing applications |
| Wake-Up Time | < 1 µs from standby to active mode - critical for responsive event-triggered sampling |
| Debug Interface | Spy-Bi-Wire (2-wire JTAG) - enables in-system programming and debugging with minimal PCB footprint |
Pinout & Package
Package: 14-pin Plastic Dual Inline Package (PDIP-N), 3.9 mm × 9.21 mm body, through-hole mounting, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK/ACLK/A0+ | Port 1 bit 0 / Timer_A clock input / Auxiliary clock output / SD16_A positive input A0 | Primary timer clock source; also routes ACLK to peripherals and serves as first SD16_A differential channel input |
| P1.1/TA0/A0−/A4+ | Port 1 bit 1 / Timer_A capture/compare 0 / SD16_A negative input A0 / positive input A4 | Enables dual-role analog input pairing for differential measurements across two SD16_A channels |
| P1.2/TA1/A1+/A4− | Port 1 bit 2 / Timer_A capture/compare 1 / SD16_A positive input A1 / negative input A4 | Supports simultaneous differential acquisition on A0 and A1, or shared A4 for multiplexed configurations |
| P1.3/VREF/A1− | Port 1 bit 3 / External reference voltage input / SD16_A negative input A1 | Accepts external mid-voltage reference or functions as second SD16_A differential input - improves noise rejection |
| P1.4/SMCLK/A2+/TCK | Port 1 bit 4 / Sub-main clock output / SD16_A positive input A2 / JTAG test clock | Provides system clock to peripherals while doubling as analog input - requires careful pinmux coordination |
| P1.5/TA0/A2−/SCLK/TMS | Port 1 bit 5 / Timer_A CCI0A / SD16_A negative input A2 / USI clock / JTAG test mode select | Shared signal for timer input, ADC reference, and serial interface clock - necessitates mode-aware firmware control |
| P1.6/TA1/A3+/SDO/SCL/TDI/TCLK | Port 1 bit 6 / Timer_A CCI1B / SD16_A positive input A3 / USI data out / I2C clock / JTAG test data in | Multi-function pin supporting analog acquisition, serial communication, and debug - managed via port select registers |
| P1.7/A3−/SDI/SDA/TDO/TDI | Port 1 bit 7 / SD16_A negative input A3 / USI data in / I2C data / JTAG test data out/in | Final SD16_A differential pair endpoint; also handles bidirectional USI/I2C data and JTAG boundary scan |
| XIN/P2.6/TA1 | Crystal input / Port 2 bit 6 / Timer_A compare output | Supports 32-kHz watch crystal for real-time clock or high-stability timing; doubles as timer output |
| XOUT/P2.7 | Crystal output / Port 2 bit 7 | Completes crystal oscillator circuit; usable as general I/O when crystal not installed |
| RST/NMI/SBWTDIO | Reset / non-maskable interrupt / Spy-Bi-Wire data I/O | Single pin handles power-on reset, fault recovery, and 2-wire debug communication - reduces system pin count |
| TEST/SBWTCK | Test mode select / Spy-Bi-Wire clock | Activates debug interface during programming; must be pulled high for normal operation |
| VCC | Supply voltage | Primary power rail for digital and analog domains - requires local decoupling per layout guidelines |
| VSS | Ground reference | Common return path for all circuits - separation from analog ground not supported in PDIP package |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit Sigma-Delta ADC (SD16_A) | Delivers 16-bit effective resolution with built-in PGA, internal reference, and oversampling - eliminates need for external precision ADC and signal conditioning |
| Differential Analog Input Channels | Four fully differential pairs (A0±, A1±, A2±, A3±) enable noise-immune sensor interfacing - critical for thermocouples, bridge sensors, and low-level transducers |
| Digital Controlled Oscillator (DCO) | Factory-calibrated at 1/8/12/16 MHz with ±1% accuracy - allows rapid wake-up and precise timing without external crystal in cost-sensitive designs |
| Universal Serial Interface (USI) | Hardware-supported SPI and I2C on shared pins - reduces firmware overhead for sensor communication and simplifies PCB routing |
| Five Low-Power Modes (LPM0–LPM4) | Enables dynamic power scaling: LPM3 retains RAM with ACLK active for RTC; LPM4 shuts down all clocks for <0.1 µA retention - maximizes battery runtime |
| Spy-Bi-Wire Debug | 2-pin JTAG-compatible interface - permits full flash programming, breakpoint debugging, and memory inspection using minimal board space and connectors |
Applications
| Portable Gas Sensor Node | Wireless Temperature Transmitter |
|---|---|
|
Use Scenario: Battery-powered CO₂ or VOC sensor with electrochemical or NDIR detection requiring stable, low-noise analog front-end and periodic wireless reporting. IC Role / Device Role / Timing Role: MSP430F2003IN performs analog signal acquisition via SD16_A, executes sensor compensation algorithms, manages RF sleep/wake cycles, and times measurement intervals using Timer_A2 and calibrated DCO. Use Value: Integrated 16-bit SD16_A eliminates external ADC and PGA, reducing BOM cost and board area; ultra-low standby current extends 2-year battery life in field-deployed units. |
Use Scenario: Industrial temperature monitoring node using RTD or thermistor, transmitting data over sub-GHz RF link every 10 minutes. IC Role / Device Role / Timing Role: MSP430F2003IN conditions analog sensor signals differentially, applies linearization in firmware, triggers RF transmission via USI, and maintains accurate timekeeping using ACLK from 32-kHz crystal. Use Value: Differential SD16_A inputs reject common-mode noise from long sensor leads; LPM3 mode preserves RAM and RTC while consuming only 0.3 µA - enabling multi-year deployment. |
| Smart Meter Tamper Detection | Low-Cost Medical Pulse Oximeter |
|
Use Scenario: Electricity meter with magnetic tamper sensing and secure event logging, operating from utility-supplied power with supercapacitor backup. IC Role / Device Role / Timing Role: MSP430F2003IN monitors Hall-effect sensor outputs via SD16_A, detects threshold violations using comparator logic, logs timestamps in flash, and wakes on interrupt to initiate secure reporting. Use Value: Sub-1 µs wake-up ensures no tamper event is missed; integrated brownout detector prevents corrupted flash writes during power dips - meeting IEC 62053 reliability requirements. |
Use Scenario: Disposable fingertip pulse oximeter using red/IR photodiodes, requiring high SNR analog acquisition and minimal power draw. IC Role / Device Role / Timing Role: MSP430F2003IN drives LED timing via Timer_A2 PWM, synchronizes SD16_A sampling to LED pulses, computes SpO₂ ratio in firmware, and displays result on segmented LCD. Use Value: SD16_A's internal reference and PGA enable consistent LED current drive and photodiode signal amplification without trimming components - reducing calibration labor and component count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F2013IN | 2 KB + 256 B flash (vs. 1 KB + 256 B), same SD16_A ADC, identical pinout and package | Required for firmware with larger code footprint or bootloader + application partitioning | Select MSP430F2013IN when >1 KB application code size or future firmware expansion is anticipated - no hardware change needed |
| MSP430F2330IPW | 24-pin TSSOP, 8 KB flash, 1 KB RAM, integrated 12-bit SAR ADC (not SD16_A), USB interface | Targets higher-performance sensor hubs with USB connectivity and faster sampling rates | Choose MSP430F2330IPW only if USB host/device capability or ≥1 MSPS sampling is required - entails PCB redesign and firmware migration |
Compared with MSP430F2013IN, the MSP430F2003IN trades flash capacity for lower unit cost and identical analog performance; versus MSP430F2330IPW, it offers superior 16-bit SD16_A resolution and lower power at the expense of interface flexibility and memory scale - making it optimal for cost-constrained, precision analog edge nodes.
Availability
MSP430F2003IN is available at Aetrix Electronics and suitable for portable sensor systems, battery-powered instrumentation, and industrial condition monitoring requiring stable component supply, long-term lifecycle support, and RoHS-compliant through-hole assembly.
Supply support for MSP430F2003IN 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 decades of expertise in ultra-low-power design.
The MSP430F20xx series was engineered specifically for energy-constrained measurement applications - integrating precision analog peripherals, intelligent power management, and compact packaging to minimize system-level power and cost.
FAQ
What is the maximum operating frequency of the MSP430F2003IN's DCO?
The MSP430F2003IN's digitally controlled oscillator (DCO) is factory-calibrated for four frequencies: 1 MHz, 8 MHz, 12 MHz, and 16 MHz - all within ±1% accuracy. While the DCO can be tuned beyond these points, the 16 MHz calibration point represents the highest guaranteed stable operating frequency for the MSP430F2003IN under specified voltage and temperature conditions.
Does the MSP430F2003IN support hardware UART communication?
No, the MSP430F2003IN does not include a dedicated UART peripheral. It features a Universal Serial Interface (USI) module that supports SPI and I2C protocols only. UART functionality must be implemented in firmware using GPIO and Timer_A - though this increases CPU load and timing sensitivity compared to hardware UART.
Can the MSP430F2003IN's SD16_A ADC perform simultaneous sampling on multiple channels?
No, the SD16_A module in the MSP430F2003IN performs sequential sampling - it acquires one differential pair (e.g., A0+ and A0−) at a time. While it supports autoscan across up to four channels, true simultaneous sampling across multiple inputs is not supported by the MSP430F2003IN's SD16_A architecture.
Is the MSP430F2003IN pin-compatible with other devices in the MSP430F20xx family?
Yes, the MSP430F2003IN shares identical pinout and package dimensions with all MSP430F20xx variants in the 14-pin PDIP (N) and TSSOP (PW) packages. This includes MSP430F2001IN, MSP430F2002IN, MSP430F2011IN, MSP430F2012IN, and MSP430F2013IN - enabling direct substitution where flash/RAM or peripheral differences permit.
What debug interface does the MSP430F2003IN use, and what hardware is required?
The MSP430F2003IN uses the Spy-Bi-Wire (SBW) interface - a 2-wire subset of JTAG - for programming and debugging. Required hardware includes a TI MSP-FET or compatible debugger with SBW support, plus connection to the RST/NMI/SBWTDIO and TEST/SBWTCK pins. No external pull-ups or level shifters are needed for standard 3.3 V operation.
MSP430F2003IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Series:
- MSP430F2xx
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, SPI
- Peripherals:
- Brown-out Detect/Reset, POR, PWM, WDT
- Number of I/O:
- 10
- Program Memory Size:
- 1KB (1K x 8 + 256B)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 128 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 10x16b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
MSP430F2003IN FAQ
1.How can I place an order for MSP430F2003IN through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F2003IN 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 MSP430F2003IN reliable?
The price and inventory of MSP430F2003IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F2003IN is usually 5 days.
3.What payment methods are accepted for MSP430F2003IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F2003IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F2003IN?
MSP430F2003IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F2003IN 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 MSP430F2003IN?
For technical support, including MSP430F2003IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F2003IN requirements.
6.How does Aetrix verify that MSP430F2003IN is sourced from the original manufacturer or authorized distributors?
All MSP430F2003IN 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 MSP430F2003IN meets industry standards.
7.What is the process for return or replacement of MSP430F2003IN?
All MSP430F2003IN units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F2003IN, 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 MSP430F2003IN part is unused and in its original packaging.
Return procedure for MSP430F2003IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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