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Texas Instruments MSP430A004IPWR
- Part No.:
- MSP430A004IPWR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- -
- Datasheet:
-
MSP430A004IPWR.pdf
- Description:
- MSP430A004 - MIXED SIGNAL MICROC
- Quantity:
- Payment:
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Inventory:10,000
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Product details
Overview
MSP430A004IPWR from Texas Instruments is an ultralow-power 16-bit RISC microcontroller featuring 4KB flash memory, 256B RAM, a 10-bit 200-ksps ADC with internal reference and data transfer controller, Timer_A with three capture/compare registers, and basic clock module supporting crystal, resistor, or external clock sources. It operates from 1.8 V to 3.6 V and targets battery-powered portable measurement systems such as handheld gas detectors and wireless sensor nodes.
For engineers reviewing the MSP430A004IPWR datasheet, MSP430A004IPWR pinout, MSP430A004IPWR application, or MSP430A004IPWR equivalent, key selection criteria include active-mode current (200 µA at 1 MHz, 2.2 V), wake-up time (<6 µs from standby), 20-pin TSSOP package compatibility, and absence of integrated USART-confirming it belongs to the MSP430x11x2 family rather than x12x2.
Technical Context
The MSP430A004IPWR implements the MSP430x11x2 architecture: a 16-bit CPU with constant generators, seven addressing modes, and register-to-register execution in one MCLK cycle. It supports five low-power modes (LPM0–LPM4), with LPM4 drawing only 0.1 µA while retaining RAM content.
Its peripheral set includes a 10-bit SAR ADC with autoscan and DTC, Timer_A3 with three CC registers for PWM and capture, and dual I/O ports (P1: 8 pins; P2: 6 pins). Unlike MSP430x12x2 variants, it lacks USART0, P3 port, and associated UART/SPI functionality-confirmed by pinout, functional block diagram, and terminal function tables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generators; enables single-cycle register operations and high code efficiency for embedded firmware. |
| Flash / RAM | 4KB flash + 256B RAM; sufficient for compact sensor firmware with calibration tables and real-time control logic without external memory. |
| ADC Performance | 10-bit, 200-ksps SAR ADC with internal reference, sample-and-hold, autoscan, and DTC; supports unattended multi-channel analog acquisition (A0–A4) without CPU intervention. |
| Power Consumption | Active mode: 200 µA @ 1 MHz, 2.2 V; Standby: 0.7 µA; Off mode (RAM retention): 0.1 µA; enables multi-year operation on coin-cell batteries. |
| Wake-Up Time | <6 µs from standby mode; allows rapid response to external interrupts (e.g., motion or threshold events) while maintaining ultralow average power. |
| Clock System | Basic clock module with DCO, 32-kHz crystal support, single external resistor option, and ACLK/SMCLK/MCLK outputs; eliminates need for external oscillators in cost-sensitive designs. |
| Operating Voltage | 1.8 V to 3.6 V supply range; compatible with single Li-ion, Li-SOCl₂, or two-AA battery configurations without regulation overhead. |
Pinout & Package
Package: 20-pin TSSOP (PW), RoHS-compliant, body size 6.5 mm × 4.4 mm × 1.2 mm. Thermal pad not present; no exposed die pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| P1.0/TACLK/ADC10CLK | GPIO / Timer_A clock input / ADC conversion clock | Configurable as digital I/O, Timer_A clock source, or ADC sampling trigger-enables synchronous timing control across peripherals. |
| P1.1/TA0 | GPIO / Timer_A CCI0A input or Out0 output | Supports edge-triggered capture (e.g., pulse width measurement) or PWM generation on dedicated output channel. |
| P1.2/TA1 | GPIO / Timer_A CCI1A input or Out1 output | Second independent capture/compare channel for dual-signal timing analysis or complementary PWM outputs. |
| P1.3/TA2 | GPIO / Timer_A CCI2A input or Out2 output | Third capture/compare resource for multi-event timestamping or three-phase motor control signals. |
| P1.4/SMCLK/TCK | GPIO / SMCLK output / JTAG test clock | Provides system sub-clock for peripherals; doubles as TCK for in-circuit debugging and programming via Spy-Bi-Wire. |
| P1.5/TA0/TMS | GPIO / Timer_A Out0 / JTAG test mode select | Shared function enables minimal-pin debug interface while retaining one PWM output during development. |
| P1.6/TA1/TDI/TCLK | GPIO / Timer_A Out1 / JTAG test data input or clock | Combines peripheral output capability with boundary-scan test access-reduces test point count. |
| P1.7/TA2/TDO/TDI | GPIO / Timer_A Out2 / JTAG test data output or input | Final JTAG signal multiplexed with third timer output; supports full debug visibility without extra pins. |
| P2.0/ACLK/A0 | GPIO / ACLK output / ADC analog input A0 | Delivers low-jitter auxiliary clock to external circuitry or serves as first ADC channel-no external mux needed. |
| P2.1/INCLK/A1 | GPIO / Timer_A INCLK input / ADC analog input A1 | Accepts external timing reference for synchronized capture or provides second analog sensing node. |
| P2.2/TA0/A2 | GPIO / Timer_A CCI0B input / ADC analog input A2 | Dual-role pin enables simultaneous analog monitoring and event-triggered capture on same physical line. |
| P2.3/TA1/A3/VREF− | GPIO / Timer_A CCI1B input / ADC A3 / negative reference | Supports differential ADC measurements using internal VREF− or external reference, improving noise immunity. |
| P2.4/TA2/A4/VREF+ | GPIO / Timer_A CCI2B input / ADC A4 / positive reference | Completes reference pair for ratiometric sensing; also functions as fourth analog input or timer input. |
| P2.5/ROSC | GPIO / DCO resistor input | Connects external resistor to calibrate DCO frequency-enables precise clock tuning without crystal. |
| RST/NMI | Reset / nonmaskable interrupt input | Hardware reset initiation and high-priority fault handling (e.g., brownout detection or watchdog timeout). |
| TEST | JTAG test mode select | Enables Spy-Bi-Wire debug interface using only TEST, TCK, and TDI/TDO pins-minimizes debug footprint. |
| VCC | Supply voltage input | 1.8–3.6 V main power rail; decoupling capacitor required per datasheet layout guidelines. |
| VSS | Ground reference | Primary return path; must be low-impedance connection to minimize noise coupling into analog sections. |
| XIN | Clock crystal input | Input terminal for 32-kHz watch crystal; used for low-power real-time clock or precise ACLK generation. |
| XOUT | Clock crystal output | Output terminal completing crystal oscillator loop; requires proper load capacitance matching per crystal spec. |
Key Features
| Feature | Design Value |
|---|---|
| Five software-selectable low-power modes | Enables adaptive power management: LPM4 (0.1 µA) for deep sleep between sensor reads; LPM0 (0.7 µA) for fast wake-up readiness. |
| Integrated 10-bit ADC with DTC | Automatically sequences conversions across A0–A4 and stores results in RAM-eliminates polling or ISR overhead for multi-channel acquisition. |
| Digitally controlled oscillator (DCO) | Stabilizes in <6 µs and supports frequency calibration via ROSC pin-replaces crystal for cost-sensitive applications needing fast wake-up. |
| Programmable code protection | Security fuse prevents unauthorized flash read-out-protects proprietary algorithms and calibration data in field-deployed devices. |
| Supply voltage brownout protection | Generates internal reset when VCC drops below safe operating threshold-ensures reliable startup and prevents erratic behavior during battery sag. |
| Serial onboard programming (BSL) | Enables field firmware updates via UART using P1.1 (TX) and P2.2 (RX)-no external programmer required after initial deployment. |
Applications
| Portable Gas Detector | Wireless Temperature Node |
|---|---|
|
Use Scenario: Battery-powered handheld unit measuring CO, NO₂, or VOC concentrations using electrochemical or NDIR sensors. IC Role / Device Role / Timing Role: Central controller acquiring analog sensor outputs via ADC10, executing compensation algorithms, managing display/LED indicators, and entering LPM4 between readings. Use Value: 0.1 µA off-mode current extends battery life to >5 years on CR2032; 10-bit ADC resolution supports ±2% gas concentration accuracy. |
Use Scenario: Self-contained temperature/humidity sensor node transmitting data via sub-GHz RF transceiver every 10 minutes. IC Role / Device Role / Timing Role: Sensor interface MCU triggering ADC conversion, processing data, controlling RF module power state, and waking precisely every 10 min using Timer_A and LPM3. Use Value: Sub-6 µs wake-up ensures accurate timing budget for RF transmission window; 200 ksps ADC oversamples thermal noise for stable readings. |
| Smart Meter Tamper Detection | Low-Power Industrial Monitor |
|
Use Scenario: Utility meter detecting physical tampering (e.g., magnet, cover removal) using Hall effect or reed switch inputs. IC Role / Device Role / Timing Role: Always-on monitor sampling GPIO interrupts, logging events to flash, and signaling via optical port or RF link upon anomaly. Use Value: Edge-selectable interrupts on P1/P2 enable immediate response to tamper events; brownout protection prevents false triggers during power dips. |
Use Scenario: DIN-rail mounted device monitoring motor vibration, current, or bearing temperature in factory settings. IC Role / Device Role / Timing Role: Signal conditioner digitizing analog sensor outputs, performing FFT preprocessing, and buffering data for periodic upload via RS-485. Use Value: 4KB flash stores firmware plus calibration coefficients; Timer_A3 generates precise PWM for LED status indicators with minimal CPU load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultralow-power mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430F1122IPW | Identical core, flash (4KB), RAM (256B), ADC, Timer_A, and pinout; differs only in marking-MSP430F1122IPW is the production part number; MSP430A004IPWR is a legacy/variant marking confirmed in TI documentation as functionally equivalent. | No functional difference; both target identical use cases including portable instrumentation and sensor nodes. | Select MSP430F1122IPW for new designs where long-term availability and documented support are prioritized. |
| MSP430F1132IPW | Same package and architecture but with 8KB flash and 256B RAM; otherwise identical peripheral set, power specs, and pinout. | Suitable for applications requiring larger firmware (e.g., BLE stack integration or advanced diagnostics) without changing PCB layout. | Choose MSP430F1132IPW when future firmware expansion or field-upgrade capability is required; pin-compatible drop-in upgrade. |
Compared with MSP430A004IPWR, MSP430F1122IPW offers identical functionality with stronger long-term supply assurance, while MSP430F1132IPW provides double the flash capacity in the same footprint-enabling scalable firmware growth without hardware revision.
Availability
MSP430A004IPWR is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered sensor nodes, and industrial monitoring systems requiring stable component supply and long-lifecycle support.
Supply support for MSP430A004IPWR 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 low-power design.
The MSP430x11x2 product line was engineered specifically for ultralow-power portable measurement applications-emphasizing extended battery life, integrated analog front-ends, and robust operation across industrial temperature ranges.
FAQ
What is the exact product identity and family classification of MSP430A004IPWR?
MSP430A004IPWR is a member of the Texas Instruments MSP430x11x2 family of ultralow-power 16-bit RISC microcontrollers. It features 4KB flash, 256B RAM, a 10-bit ADC, Timer_A3, and no integrated USART. Documentation confirms it maps directly to the MSP430F1122 functional variant, packaged in 20-pin TSSOP (PW).
Does MSP430A004IPWR support UART or SPI communication interfaces?
No, MSP430A004IPWR does not include USART0 or any hardware UART/SPI peripheral. This is confirmed by its placement in the MSP430x11x2 family-unlike the x12x2 series, which explicitly adds USART0. Communication must be implemented via bit-banged GPIO or external transceivers.
What are the validated low-power modes and their typical current draw for MSP430A004IPWR?
MSP430A004IPWR supports five low-power modes: LPM0 (0.7 µA), LPM1 (0.7 µA), LPM2 (1.0 µA), LPM3 (0.3 µA), and LPM4 (0.1 µA with RAM retention). These values are measured at 2.2 V and reflect actual silicon characterization-not typical or maximum estimates.
Which pins on MSP430A004IPWR support analog inputs for the 10-bit ADC?
The MSP430A004IPWR ADC10 supports five analog inputs: P2.0/A0, P2.1/A1, P2.2/A2, P2.3/A3, and P2.4/A4. All are accessible on the 20-pin TSSOP package and share pins with GPIO and Timer_A functions-requiring proper configuration of ADC10AE and port direction registers.
Is MSP430A004IPWR pin-compatible with other MSP430 devices in the same package?
Yes, MSP430A004IPWR is pin-compatible with MSP430F1122IPW and MSP430F1132IPW in the 20-pin TSSOP (PW) package. All share identical pin numbering, electrical characteristics, and peripheral mapping-enabling direct substitution where flash size permits.
MSP430A004IPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- -
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- -
- Core Size:
- -
- Speed:
- -
- Connectivity:
- -
- Peripherals:
- -
- Number of I/O:
- -
- Program Memory Size:
- -
- Program Memory Type:
- -
- EEPROM Size:
- -
- RAM Size:
- -
- Voltage - Supply (Vcc/Vdd):
- -
- Data Converters:
- -
- Oscillator Type:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
MSP430A004IPWR FAQ
1.How can I place an order for MSP430A004IPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430A004IPWR 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 MSP430A004IPWR reliable?
The price and inventory of MSP430A004IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430A004IPWR is usually 5 days.
3.What payment methods are accepted for MSP430A004IPWR?
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Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430A004IPWR?
MSP430A004IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430A004IPWR 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 MSP430A004IPWR?
For technical support, including MSP430A004IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430A004IPWR requirements.
6.How does Aetrix verify that MSP430A004IPWR is sourced from the original manufacturer or authorized distributors?
All MSP430A004IPWR 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 MSP430A004IPWR meets industry standards.
7.What is the process for return or replacement of MSP430A004IPWR?
All MSP430A004IPWR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430A004IPWR, 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 MSP430A004IPWR part is unused and in its original packaging.
Return procedure for MSP430A004IPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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