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Texas Instruments MSP430G2302IPW20
- Part No.:
- MSP430G2302IPW20
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2302IPW20.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:525
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Product details
Overview
MSP430G2302IPW20 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 20-pin TSSOP package, featuring 4 KB Flash, 256 B RAM, one 16-bit Timer_A with three capture/compare registers, Universal Serial Interface (USI) for SPI/I²C, and support for up to 8 capacitive-touch I/O pins. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable instrumentation.
For engineers reviewing the MSP430G2302IPW20 datasheet, MSP430G2302IPW20 pinout, MSP430G2302IPW20 application, or MSP430G2302IPW20 equivalent, key selection criteria include its 4 KB Flash size, absence of integrated ADC10 (distinguishing it from MSP430G2x32 variants), USI-based serial interface capability, low-power operating modes (LPM0–LPM4), and Spy-Bi-Wire debug support.
Technical Context
The MSP430G2302IPW20 implements a 16-bit CPU with seven addressing modes and 51 instructions, executing register-to-register operations in one CPU cycle. Its clock system integrates a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, internal LF oscillator, and external crystal support via XIN/XOUT pins.
It uses two 8-bit I/O ports (P1 and P2) with individually configurable direction, pullup/pulldown resistors, interrupt edge select, and pin-oscillator enable for capacitive touch. The USI module supports synchronous SPI and I²C protocols without dedicated hardware peripherals, relying on software-controlled bit-banging or timer-assisted timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generator; enables efficient C code execution and deterministic real-time response. |
| Flash / RAM | 4 KB Flash program memory and 256 B RAM; sufficient for compact firmware with limited data buffering, e.g., sensor polling and BLE packet prep. |
| Supply Voltage | 1.8 V to 3.6 V operation; compatible with single-cell Li-ion, Li-poly, or dual-AA alkaline power sources without LDO overhead. |
| Ultra-Low Power | Active mode: 220 µA at 1 MHz/2.2 V; LPM4 (RAM retention): 0.1 µA; enables multi-year battery life in wake-on-event applications. |
| Timer Resource | One 16-bit Timer_A with three capture/compare registers (TA0.0/TA0.1/TA0.2); supports PWM generation, input capture, interval timing, and USI clocking. |
| Serial Interface | Universal Serial Interface (USI) supporting SPI master/slave and I²C master modes; eliminates need for external level shifters or protocol converters in simple sensor hub designs. |
| Debug Interface | Spy-Bi-Wire (2-wire JTAG) via RST/NMI and TEST/SBWTCK pins; enables in-circuit programming and debugging with minimal PCB footprint. |
Pinout & Package
Package: 20-pin TSSOP (PW), 0.65 mm pitch, body size 6.5 × 4.4 mm, thermal pad optional. Pinout validated per TI SLAS723H Rev. May 2013, PW20 top-view diagram and Table 2 terminal functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC (Pin 1) | Digital supply voltage | Primary 1.8–3.6 V power rail for CPU, USI, Timer_A, and digital I/O; requires local 100 nF decoupling. |
| P1.0/TA0CLK/ACLK/A0 (Pin 2) | Multi-function I/O | Configurable as Timer_A clock input, ACLK output, or general-purpose I/O; not ADC-capable in G2302 variant. |
| P1.1/TA0.0/A1 (Pin 3) | Capture/compare I/O | Timer_A channel 0 input/output; supports PWM output or event capture; no ADC function on this device. |
| P1.2/TA0.1/A2 (Pin 4) | Capture/compare I/O | Timer_A channel 1 input/output; usable for second PWM or quadrature decoding; no analog input capability. |
| P1.3/ADC10CLK/A3 (Pin 5) | Timer/USI clock I/O | Provides ADC10 clock only on MSP430G2x32 devices; on MSP430G2302IPW20, functions as TA0.2 or USI clock source. |
| P1.4/TA0.2/SMCLK/A4 (Pin 6) | System clock I/O | Outputs SMCLK or serves as Timer_A channel 2; no ADC input - confirms absence of ADC10 peripheral in this variant. |
| P1.5/TA0.0/SCLK/A5 (Pin 7) | USI clock I/O | USI serial clock (SCLK) in SPI mode or SMCLK output; dual-use simplifies board routing for sensor interfaces. |
| P1.6/TA0.1/SDO/SCL/A6 (Pin 8) | USI data/clock I/O | USI serial data output (SPI) or I²C clock (SCL); enables direct connection to SPI sensors or I²C EEPROMs. |
| P1.7/SDI/SDA/A7 (Pin 9) | USI data I/O | USI serial data input (SPI) or I²C data (SDA); completes full-duplex SPI or open-drain I²C bus implementation. |
| P2.0–P2.5 (Pins 10–13, 18–19) | General-purpose I/O | Eight total P2 pins available in 20-pin package; each supports interrupt, pullup/pulldown, and capacitive touch via PinOsc enable. |
| RST/NMI/SBWTDIO (Pin 16) | Debug/reset I/O | Spy-Bi-Wire data I/O and non-maskable interrupt/reset input; shared pin reduces debug connector count. |
| TEST/SBWTCK (Pin 17) | Debug clock input | Spy-Bi-Wire test clock; enables 2-pin JTAG programming and real-time debugging without full 4-pin JTAG header. |
| XIN/P2.6/TA0.1 (Pin 19) | Clock input | Crystal oscillator input or general-purpose I/O; supports 32.768 kHz watch crystal for RTC or low-power timing. |
| DVSS (Pin 20) | Digital ground | Reference return path for DVCC; must be connected to system ground plane with low-inductance trace. |
Key Features
| Feature | Design Value |
|---|---|
| Five Low-Power Modes (LPM0–LPM4) | Enables sub-µA sleep current with fast wake-up (<1 µs), critical for duty-cycled sensor acquisition in energy-harvesting systems. |
| Capacitive Touch Support | Pin-oscillator circuitry on all P1 and P2 pins allows software-based touch sensing without external components-ideal for cost-sensitive human-interface designs. |
| Calibrated DCO Frequencies | Factory-trimmed DCO settings for 1/8/12/16 MHz reduce need for external crystals in timing-critical but non-RTC applications. |
| On-Chip Emulation Logic | Spy-Bi-Wire interface provides full debug visibility (breakpoints, register view, memory access) using only two pins-minimizes production test fixture complexity. |
| Programmable Code Protection | Security fuse prevents unauthorized flash readout, protecting proprietary firmware algorithms in deployed edge devices. |
Applications
| Smart Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor transmitting data via UART-to-Bluetooth module every 30 seconds. IC Role / Device Role / Timing Role: MSP430G2302IPW20 acts as system controller: reads digital sensor I²C data, formats packets, triggers UART transmission, then enters LPM4 until next interval timer wake-up. Use Value: 0.1 µA LPM4 current extends CR2032 battery life beyond 3 years; USI handles I²C without dedicated peripheral, saving die area and cost. | Use Scenario: Wrist-worn pulse oximeter acquiring LED drive timing and photodiode signal conditioning via external ADC. IC Role / Device Role / Timing Role: MSP430G2302IPW20 sequences LED drivers, captures external ADC results over SPI, computes SpO₂ ratio, and drives OLED display via SPI. Use Value: 220 µA active current at 1 MHz ensures responsive UI while maintaining >7-day runtime on coin cell; Timer_A generates precise LED timing pulses. |
| Industrial Control Panel | Asset Tracking Beacon |
Use Scenario: DIN-rail mounted HMI panel with tactile buttons, status LEDs, and RS-485 communication to PLC. IC Role / Device Role / Timing Role: MSP430G2302IPW20 scans capacitive buttons, debounces inputs, updates LED states, and manages half-duplex RS-485 transceiver control via GPIO. Use Value: Built-in capacitive touch eliminates mechanical switches and reduces BOM cost; USI SPI controls RS-485 transceiver enable lines with precise timing. | Use Scenario: GPS-denied indoor asset tag reporting location via RSSI triangulation from BLE beacons every 5 minutes. IC Role / Device Role / Timing Role: MSP430G2302IPW20 wakes periodically, scans for nearby BLE advertisements via external radio, logs signal strength, and stores data in Flash before returning to LPM4. Use Value: Fast DCO wake-up (<1 µs) minimizes active time during scan; 4 KB Flash stores beacon MAC list and historical RSSI logs across months of operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2232IPW20 | Same package and core, but includes 10-bit ADC10 with 8-channel autoscan; 2 KB Flash, 256 B RAM. | Required when analog sensor interfacing (e.g., thermistor, potentiometer) is needed without external ADC. | Select MSP430G2232IPW20 if on-chip ADC is mandatory; otherwise MSP430G2302IPW20 offers higher Flash density for larger firmware. |
| MSP430FR2111IPW20 | Ferroelectric RAM (FRAM) instead of Flash; 1 KB FRAM, 512 B RAM; enhanced write endurance and lower active power (112 µA/MHz). | Better suited for frequent data logging or over-the-air firmware updates due to FRAM's near-infinite write cycles and faster writes. | Choose MSP430FR2111IPW20 for high-write-cycle applications; MSP430G2302IPW20 remains optimal for cost-sensitive, fixed-function firmware with infrequent updates. |
Compared with MSP430G2232IPW20, the MSP430G2302IPW20 trades ADC10 for +2 KB Flash, enabling richer feature sets in sensor fusion firmware; versus MSP430FR2111IPW20, it uses proven Flash technology with higher code density but lacks FRAM's write speed and endurance-making it preferable for stable, low-update-rate deployments.
Availability
MSP430G2302IPW20 is available at Aetrix Electronics and suitable for smart sensor nodes, portable medical monitors, industrial control panels, and asset tracking beacons requiring stable component supply, long-term manufacturability, and TI's industry-standard toolchain support.
Supply support for MSP430G2302IPW20 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 personal electronics markets.
The MSP430G2xx family was designed specifically for ultra-low-power, cost-sensitive embedded applications where battery life, small footprint, and rapid development with mature toolchains are critical-exemplified by the MSP430G2302IPW20's balance of Flash capacity, I/O flexibility, and sub-µA sleep current.
FAQ
Does the MSP430G2302IPW20 include an integrated ADC?
No, the MSP430G2302IPW20 does not include an ADC10 module. This is confirmed by TI's SLAS723H datasheet Table 1, which lists "–" under the ADC10 Channel column for all MSP430G2x02 series devices including MSP430G2302IPW20. Analog sensing requires an external ADC or selection of an MSP430G2x32 variant like MSP430G2332IPW20.
What debug interface does the MSP430G2302IPW20 support?
The MSP430G2302IPW20 supports Spy-Bi-Wire (SBW), a 2-wire variant of JTAG, using pins RST/NMI/SBWTDIO (Pin 16) and TEST/SBWTCK (Pin 17). This interface enables full in-circuit programming, breakpoint debugging, and real-time register/memory inspection without requiring a 4-pin JTAG header.
Can the MSP430G2302IPW20 drive capacitive touch buttons?
Yes, the MSP430G2302IPW20 supports capacitive touch sensing on all P1 and P2 I/O pins using its integrated pin-oscillator (PinOsc) circuitry. Each pin can be individually enabled for touch detection via software configuration-no external RC networks or dedicated touch controller ICs are required.
What is the maximum operating frequency of the MSP430G2302IPW20?
The MSP430G2302IPW20 supports internal DCO frequencies up to 16 MHz, as specified in the "Basic Clock Module Configurations" section of SLAS723H. This maximum frequency is factory-calibrated and accessible via DCOCTL and BCSCTL1/2 registers; actual sustained operation depends on supply voltage and temperature per the device's recommended operating conditions.
Is the MSP430G2302IPW20 pin-compatible with other devices in the MSP430G2xx family?
Yes, the MSP430G2302IPW20 in 20-pin TSSOP (PW20) is pin-compatible with other PW20-packaged MSP430G2xx devices-including MSP430G2202IPW20, MSP430G2402IPW20, MSP430G2232IPW20, and MSP430G2432IPW20-as confirmed by identical pin numbering and terminal function definitions in SLAS723H Table 2. Peripheral differences (e.g., ADC presence) do not affect pin mapping.
MSP430G2302IPW20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430G2xx
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 16MHz
- Connectivity:
- I2C, SPI, USI
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 16
- Program Memory Size:
- 4KB (4K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 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:
MSP430G2302IPW20 FAQ
1.How can I place an order for MSP430G2302IPW20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2302IPW20 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 MSP430G2302IPW20 reliable?
The price and inventory of MSP430G2302IPW20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2302IPW20 is usually 5 days.
3.What payment methods are accepted for MSP430G2302IPW20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2302IPW20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2302IPW20?
MSP430G2302IPW20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2302IPW20 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 MSP430G2302IPW20?
For technical support, including MSP430G2302IPW20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2302IPW20 requirements.
6.How does Aetrix verify that MSP430G2302IPW20 is sourced from the original manufacturer or authorized distributors?
All MSP430G2302IPW20 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 MSP430G2302IPW20 meets industry standards.
7.What is the process for return or replacement of MSP430G2302IPW20?
All MSP430G2302IPW20 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2302IPW20, 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 MSP430G2302IPW20 part is unused and in its original packaging.
Return procedure for MSP430G2302IPW20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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