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Texas Instruments MSP430G2252IN20
- Part No.:
- MSP430G2252IN20
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MSP430G2252IN20.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:314
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Product details
Overview
MSP430G2252IN20 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 20-pin PDIP package, featuring 2 KB flash, 256 B RAM, 10-bit ADC with 8-channel autoscan, USI supporting SPI/I²C, and Timer_A with three capture/compare registers. It operates from 1.8 V to 3.6 V and targets battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2252IN20 datasheet, MSP430G2252IN20 pinout, MSP430G2252IN20 application, or MSP430G2252IN20 equivalent, key selection criteria include ADC10 integration, Spy-Bi-Wire debug support, capacitive-touch I/O capability, low-power mode timing (e.g., <1 µs wake-up), and PDIP-compatible footprint for prototyping and legacy board designs.
Technical Context
The MSP430G2252IN20 implements a 16-bit CPU with constant generators and seven addressing modes, executing register-to-register instructions in one CPU cycle. Its clock system integrates DCO (calibrated at 1/8/12/16 MHz), LF oscillator, and 32-kHz crystal support - all selectable via BCSCTL registers.
Peripherals are memory-mapped and fully accessible via standard instructions. The ADC10 module includes internal reference, sample-and-hold, and DTC for autonomous data transfer; Comparator_A+ provides eight-channel analog comparison; USI handles synchronous serial communication without CPU overhead.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and 51-instruction set - enables compact, deterministic code for real-time sensor processing. |
| Flash / RAM | 2 KB flash program memory + 256 B RAM - sufficient for firmware with ADC-driven data acquisition and USI-based sensor interface logic. |
| ADC Resolution | 10-bit SAR ADC with 8 input channels and autoscan - supports simultaneous multi-sensor analog monitoring (e.g., temperature, voltage, light) without software polling. |
| Power Modes | Active mode (220 µA @ 1 MHz, 2.2 V) and five low-power modes down to 0.1 µA (RAM retention) - extends coin-cell battery life to years in intermittent-sampling applications. |
| Communication | Universal Serial Interface (USI) supporting hardware SPI and I²C - eliminates bit-banging overhead and ensures reliable peripheral interfacing (e.g., EEPROM, digital sensors). |
| Debug Interface | Spy-Bi-Wire (2-wire JTAG) with SBWTDIO/SBWTCK pins - enables in-system programming and full-speed debugging using TI MSP-FET or LaunchPad tools. |
| Capacitive Touch | Up to 16 I/O pins with integrated pin-oscillator enable - allows direct implementation of touch buttons/sliders without external components. |
Pinout & Package
20-pin PDIP (N package), 600 mil width, through-hole mounting. Pin pitch: 0.1 inch (2.54 mm). Compatible with standard IC sockets and breadboards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, 15 | DVCC / AVCC / DVSS | Digital supply (DVCC), analog supply (AVCC), and digital ground (DVSS) - require separate decoupling (0.1 µF ceramic) near pins 1 & 16 for stable ADC operation. |
| 2–9, 11–14, 17–20 | P1.x / P2.x I/O | Two 8-bit ports: P1.0–P1.7 (all multifunction) and P2.0–P2.5 (digital I/O only); P1 pins support ADC10 inputs A0–A7, USI, Timer_A, comparator, and capacitive touch. |
| 10, 11 | RST/NMI/SBWTDIO / TEST/SBWTCK | Spy-Bi-Wire debug interface - enables programming and real-time debugging with no external voltage required; RST/NMI also serves as non-maskable interrupt input. |
| 18, 19 | XOUT/P2.7 / XIN/P2.6/TA0.1 | Crystal oscillator terminals - support 32.768 kHz watch crystal for precise real-time clock; also configurable as GPIO or Timer_A output. |
| 5, 6, 14 | A3/VREF− / A4/VREF+ / AVSS | Dedicated ADC reference inputs - allow internal or external reference selection; AVSS must be connected to clean analog ground separate from DVSS for <1 LSB ADC error. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power ADC10 | 10-bit, 200-ksps sampling with internal reference and autoscan - enables energy-efficient periodic sensor reading without waking CPU. |
| Digital-controlled oscillator (DCO) | Four factory-calibrated frequencies (1/8/12/16 MHz) with sub-µs wake-up - eliminates need for external high-frequency crystal in cost-sensitive designs. |
| Hardware USI | Configurable SPI/I²C engine with shift register and clock control - reduces firmware size and CPU load when interfacing with serial peripherals. |
| Comparator_A+ | Eight-channel analog comparator with programmable hysteresis and output routing - supports battery voltage monitoring and threshold-triggered wake-up from LPM4. |
| Capacitive-touch I/O | Pin-oscillator circuit on P1.x pins - enables robust touch sensing with no external RC network, ideal for low-cost human-interface applications. |
| Security fuse | Programmable code protection via security fuse - prevents unauthorized readout of flash contents during field deployment. |
Applications
| Smart Sensor Node | Portable Data Logger |
|---|---|
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and ambient light at 10-second intervals. IC Role / Device Role / Timing Role: MSP430G2252IN20 acts as system controller and ADC manager - initiates autoscan ADC sequence, stores results in RAM, and transmits via USI-I²C to display module. Use Value: 0.5 µA standby current and <1 µs wake-up minimize energy per measurement, enabling >2-year operation on CR2032. | Use Scenario: Handheld device recording voltage/current waveforms from test equipment into internal flash memory. IC Role / Device Role / Timing Role: MSP430G2252IN20 serves as data acquisition engine - triggers ADC10 at precise intervals using Timer_A, buffers samples via DTC, and writes batches to flash. Use Value: Integrated DTC automates memory transfers, freeing CPU for real-time timestamping and USB protocol handling. |
| Capacitive-Touch Remote | Low-Cost Industrial Controller |
Use Scenario: IR remote control with touch-sensitive buttons replacing mechanical switches. IC Role / Device Role / Timing Role: MSP430G2252IN20 executes capacitive-touch detection on P1.0–P1.7, debounces inputs, and encodes commands for IR transmission. Use Value: On-chip pin-oscillator eliminates external RC components, reducing BOM cost and PCB area by >30%. | Use Scenario: DIN-rail mounted sensor interface converting analog 4–20 mA signals to Modbus RTU over RS-485. IC Role / Device Role / Timing Role: MSP430G2252IN20 conditions analog input, performs linearization via lookup table, and drives USI-SPI to isolated RS-485 transceiver. Use Value: Dual supply domains (DVCC/AVCC) and dedicated AVSS ensure <0.5% measurement accuracy across industrial temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430G2232IN20 | No ADC10 module; retains USI, Timer_A, comparator, and same power profile. | Suitable where analog sensing is handled externally or not required. | Select when ADC functionality is unnecessary - saves cost and simplifies layout by removing AVCC/AVSS routing. |
| MSP430G2252IPW20 | Identical electrical specs and pinout; TSSOP-20 package instead of PDIP-20. | Better suited for automated SMT assembly and space-constrained PCBs. | Choose for volume production with pick-and-place; retains full functional compatibility with MSP430G2252IN20 firmware and debug interface. |
Compared with MSP430G2232IN20, the MSP430G2252IN20 adds integrated 10-bit ADC for local analog signal digitization; compared with MSP430G2252IPW20, it offers through-hole mounting for rapid prototyping and legacy system upgrades without rework.
Availability
MSP430G2252IN20 is available at Aetrix Electronics and suitable for smart sensor nodes, portable data loggers, capacitive-touch remotes, and low-cost industrial controllers requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2252IN20 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 consumer markets.
The MSP430G2xx family targets ultra-low-power embedded applications - designed specifically for battery-operated sensor systems, portable instrumentation, and energy-harvesting devices where microamp-level active and standby currents are critical.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2252IN20?
The MSP430G2252IN20 ADC10 module supports up to 200 ksamples per second (ksps) with internal reference and autoscan enabled. This rate assumes optimal clock configuration (e.g., ADC10CLK sourced from SMCLK at ≥5 MHz) and minimal conversion setup overhead. Real-world throughput may vary based on reference selection, input channel count, and software-triggered vs. timer-triggered sampling.
Does the MSP430G2252IN20 support hardware UART communication?
No, the MSP430G2252IN20 does not include a dedicated UART peripheral. It features a Universal Serial Interface (USI) that supports hardware SPI and I²C protocols only. UART functionality must be implemented in software using Timer_A and GPIO pins - though this increases CPU load and limits baud rate stability compared to hardware UART.
Can the MSP430G2252IN20 operate from a single 3.3 V supply?
Yes, the MSP430G2252IN20 operates across a supply voltage range of 1.8 V to 3.6 V. At 3.3 V, it delivers full performance: 16 MHz DCO operation, 200 ksps ADC sampling, and guaranteed timing margins for all peripherals. System designers should ensure DVCC and AVCC are both supplied at 3.3 V with proper decoupling.
How many I/O pins on the MSP430G2252IN20 support capacitive touch sensing?
The MSP430G2252IN20 supports capacitive touch sensing on up to 16 I/O pins - specifically all eight pins of Port 1 (P1.0–P1.7) and up to eight pins of Port 2 (P2.0–P2.5 plus P2.6/P2.7), subject to pin multiplexing constraints. Each enabled pin uses the integrated pin-oscillator circuit, requiring no external components beyond standard PCB layout guidelines.
Is the MSP430G2252IN20 pin-compatible with other devices in the MSP430G2x52 family?
Yes, the MSP430G2252IN20 is pin-compatible with all 20-pin variants in the MSP430G2x52 family, including MSP430G2352IN20 and MSP430G2452IN20. They share identical PDIP-20 pinout, power/ground assignments, and peripheral mappings - differing only in flash size (2 KB vs. 4 KB vs. 8 KB) and RAM (256 B), allowing firmware reuse and drop-in upgrades within the same package.
MSP430G2252IN20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Series:
- MSP430G2xx
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not 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:
- 2KB (2K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 256 x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
MSP430G2252IN20 FAQ
1.How can I place an order for MSP430G2252IN20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2252IN20 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 MSP430G2252IN20 reliable?
The price and inventory of MSP430G2252IN20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2252IN20 is usually 5 days.
3.What payment methods are accepted for MSP430G2252IN20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2252IN20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2252IN20?
MSP430G2252IN20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2252IN20 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 MSP430G2252IN20?
For technical support, including MSP430G2252IN20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2252IN20 requirements.
6.How does Aetrix verify that MSP430G2252IN20 is sourced from the original manufacturer or authorized distributors?
All MSP430G2252IN20 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 MSP430G2252IN20 meets industry standards.
7.What is the process for return or replacement of MSP430G2252IN20?
All MSP430G2252IN20 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2252IN20, 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 MSP430G2252IN20 part is unused and in its original packaging.
Return procedure for MSP430G2252IN20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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