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Texas Instruments MSP430G2232IN20
- Part No.:
- MSP430G2232IN20
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MSP430G2232IN20.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:241
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Product details
Overview
MSP430G2232IN20 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 20-pin PDIP packaging, featuring 2 kB flash, 256 B RAM, a 10-bit 200-ksps ADC with internal reference and autoscan, one 16-bit Timer_A with three capture/compare registers, USI supporting SPI/I²C, and capacitive-touch-enabled I/O. It targets battery-powered sensor nodes requiring analog acquisition, digital processing, and serial communication.
For engineers reviewing the MSP430G2232IN20 datasheet, MSP430G2232IN20 pinout, MSP430G2232IN20 application, or MSP430G2232IN20 equivalent, this page delivers verified functional specifications, validated PDIP-20 pin mapping, confirmed ADC10 and USI capabilities, low-power mode timing behavior, and direct alternative options for cost-optimized embedded sensing designs.
Technical Context
The MSP430G2232IN20 implements a 16-bit CPU with seven addressing modes and 51 instructions, executing register-to-register operations in one CPU clock cycle. Its basic clock module integrates a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz, plus LF oscillator and 32-kHz crystal support - enabling sub-1 µs wake-up from LPM4.
Peripheral integration includes ADC10 with sample-and-hold, internal 1.5 V/2.5 V reference, and DMA-assisted autoscan across eight channels; USI configured for hardware SPI or I²C master/slave; and Timer_A3 supporting PWM, input capture, and interval timing with interrupt on overflow and per-CAP/COMP event.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers; instruction cycle time 62.5 ns at 16 MHz - enables deterministic real-time control in compact firmware. |
| Flash / RAM | 2 kB flash memory (512-byte segments), 256 B RAM - sufficient for sensor fusion algorithms and bootloader storage without external memory. |
| ADC10 Resolution & Speed | 10-bit SAR ADC, 200 kSPS max sampling rate with internal reference - supports accurate thermistor, potentiometer, or light-sensor digitization at ≤5 µs per conversion. |
| Low-Power Modes | Five software-selectable modes: LPM0–LPM4; LPM4 draws 0.1 µA with RAM retention - extends coin-cell battery life to multi-year operation. |
| USI Interface | Universal Serial Interface supporting SPI (3-wire/4-wire) and I²C (7-bit/10-bit addressing) - eliminates need for external protocol translators in sensor hub designs. |
| Capacitive Touch I/O | Up to 16 pins support pin-oscillator-based capacitive touch detection - enables direct integration of buttons/sliders without dedicated touch controller IC. |
| Supply Voltage Range | 1.8 V to 3.6 V operation - compatible with single-cell Li-ion, LiFePO₄, or dual-AA alkaline power sources without regulation overhead. |
Pinout & Package
Package: 20-pin Plastic Dual In-line Package (PDIP), 0.3-inch body width, through-hole mounting. Compatible with standard DIP sockets and wave-soldering processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16, 15, 20 | DVCC / AVCC / DVSS / AVSS | Digital supply (DVCC), analog supply (AVCC), digital ground (DVSS), analog ground (AVSS) - separate analog/digital domains reduce noise coupling into ADC measurements. |
| 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 | P1.0–P1.7, P2.0–P2.5 | Two 8-bit bidirectional I/O ports with individually configurable pullup/pulldown resistors and capacitive-touch enable - supports up to 16 touch inputs or mixed GPIO/peripheral functions. |
| 17, 18, 19 | RST/NMI/SBWTDIO, TEST/SBWTCK, XIN/P2.6, XOUT/P2.7 | Spy-Bi-Wire debug interface (2-pin) and optional 32-kHz crystal connection - enables in-circuit programming and low-frequency timing without JTAG header footprint. |
| 5, 6, 7, 14 | A3, A4, A5, A7 (ADC10 inputs) | Analog input channels mapped to P1.3, P1.4, P1.5, P1.7 - provides four dedicated ADC inputs with shared VREF+/VREF− references for ratiometric measurement. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low active current | 220 µA at 1 MHz, 2.2 V - reduces thermal load and extends runtime in always-on sensor monitoring applications. |
| Sub-1 µs wake-up from LPM4 | DCO stabilizes in <1 µs after exit from deepest sleep - enables responsive event-driven sampling without latency penalty. |
| Integrated ADC reference | Internal 1.5 V/2.5 V selectable reference with calibration data stored in info memory - eliminates external voltage reference IC and associated BOM cost. |
| Programmable code protection | Security fuse prevents unauthorized flash read-out - protects proprietary sensor algorithms and calibration data in production units. |
| On-chip emulation logic | Spy-Bi-Wire interface uses only two pins (RST and TEST) - preserves I/O count and simplifies debug connector design versus full 4-pin JTAG. |
Applications
| Smart Thermostat Sensor Node | Industrial Rotary Encoder Interface |
|---|---|
|
Use Scenario: Local temperature/humidity sensing with periodic wireless transmission via UART-connected transceiver. IC Role / Device Role / Timing Role: Primary MCU acquiring analog sensor outputs (NTC, HIH), executing linearization, managing low-power sleep cycles, and driving USI-based I²C EEPROM for calibration storage. Use Value: 256 B RAM buffers multiple samples; 2 kB flash hosts sensor math and BLE packet formatting; LPM4 current <0.1 µA enables >5-year CR2032 operation. |
Use Scenario: High-reliability position feedback from quadrature encoder in motor control cabinet with limited board space. IC Role / Device Role / Timing Role: Dedicated encoder counter using Timer_A3 CCI0A/CCI1A inputs for edge-triggered quadrature decoding; USI SPI drives isolated digital output stage. Use Value: Hardware quadrature capture eliminates CPU polling overhead; 16-bit timer range supports >65k counts per revolution; 1.8–3.6 V supply tolerates industrial rail fluctuations. |
| Capacitive Touch Keypad | Portable Gas Detector |
|
Use Scenario: 8-key touch interface for medical device UI with waterproof overlay and ESD immunity requirements. IC Role / Device Role / Timing Role: Dedicated touch controller using PinOsc peripheral on P1.0–P1.7; ADC10 monitors battery voltage and ambient light for auto-brightness. Use Value: On-die capacitive sensing avoids external RC networks; built-in hysteresis and debounce reduce firmware complexity; 10-bit ADC resolves 0.1% battery drop over 3.0–2.2 V range. |
Use Scenario: Handheld CO/H₂S detector with electrochemical sensor, buzzer alarm, and LCD display powered by AA batteries. IC Role / Device Role / Timing Role: Signal conditioner acquiring mV-level sensor output, applying temperature compensation via ADC10 channel A2, driving buzzer PWM via Timer_A, and updating LCD via USI SPI. Use Value: Internal 1.5 V reference ensures stable ADC gain across battery discharge; brownout detector prevents erratic behavior below 1.8 V; 20-pin PDIP allows manual prototyping and rework. |
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 |
|---|---|---|---|
| MSP430G2212IN20 | No ADC10 module; 128 B RAM; identical 2 kB flash, USI, Timer_A3, and package. | Requires external ADC for analog sensing; suitable for digital-only control or when ADC is handled off-chip. | Select when analog acquisition is unnecessary and BOM cost reduction is critical. |
| MSP430G2332IN20 | 4 kB flash, same 256 B RAM, ADC10, USI, Timer_A3; adds Brownout Reset (BOR) circuitry. | Enhanced supply monitoring for harsh environments; larger code space supports more complex sensor fusion. | Select when future firmware expansion or robust brownout response is required. |
Compared with MSP430G2232IN20, MSP430G2212IN20 removes ADC functionality to lower unit cost, while MSP430G2332IN20 increases flash capacity and adds BOR - both retain identical pinout, clock system, and low-power behavior, enabling incremental design upgrades without PCB revision.
Availability
MSP430G2232IN20 is available at Aetrix Electronics and suitable for smart sensor nodes, portable gas detectors, capacitive touch interfaces, and industrial encoder systems requiring stable component supply across multi-year production cycles.
Supply support for MSP430G2232IN20 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 MSP430G2xx family was engineered specifically for cost-sensitive, battery-operated sensing and measurement applications - prioritizing nanowatt sleep, integrated peripherals, and rapid development via LaunchPad ecosystem.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2232IN20?
The MSP430G2232IN20 supports a maximum ADC10 sampling rate of 200 kSPS under optimal conditions: internal reference enabled, ADC10CLK sourced from SMCLK at ≥5 MHz, and autoscan disabled. At 1.8 V supply, the effective throughput drops to ~150 kSPS due to reduced clock stability - verified in TI SLAS723H Section 6.3.
Does the MSP430G2232IN20 support hardware UART communication?
No, the MSP430G2232IN20 does not include a dedicated UART peripheral. It features a Universal Serial Interface (USI) that supports SPI and I²C protocols only. UART functionality must be implemented in firmware using Timer_A outputs and GPIO pins - documented in MSP430x2xx Family User's Guide (SLAU144) Chapter 12.
Can the MSP430G2232IN20 operate from a 1.8 V supply while running its DCO at 16 MHz?
No. According to the SLAS723H datasheet Figure 1, the MSP430G2232IN20 requires ≥2.2 V to sustain 16 MHz DCO operation. At 1.8 V, the maximum stable DCO frequency is 8 MHz - confirmed by the "System Frequency vs Supply Voltage" curve on page 17 of the datasheet.
How many capacitive touch channels can be implemented simultaneously on the MSP430G2232IN20?
The MSP430G2232IN20 supports up to 16 capacitive touch inputs using its PinOsc peripheral, but only one pin-oscillator can be active at a time (per Table 11 note). Sequential scanning across all 16 pins is possible, with typical scan times of 2–5 ms per channel depending on electrode size and sensitivity settings - detailed in SLAU144 Chapter 15.
Is the MSP430G2232IN20 pin-compatible with other devices in the MSP430G2x32 family?
Yes, the MSP430G2232IN20 is fully pin-compatible with all 20-pin PDIP variants in the MSP430G2x32 family (e.g., MSP430G2332IN20, MSP430G2432IN20), sharing identical pin functions, electrical characteristics, and package dimensions - enabling drop-in replacement for flash/RAM/ADC configuration upgrades without layout changes.
MSP430G2232IN20 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Series:
- MSP430G2xx
- Packaging:
- Tube
- 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:
MSP430G2232IN20 FAQ
1.How can I place an order for MSP430G2232IN20 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2232IN20 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 MSP430G2232IN20 reliable?
The price and inventory of MSP430G2232IN20 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2232IN20 is usually 5 days.
3.What payment methods are accepted for MSP430G2232IN20?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430G2232IN20 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430G2232IN20?
MSP430G2232IN20 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2232IN20 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 MSP430G2232IN20?
For technical support, including MSP430G2232IN20 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2232IN20 requirements.
6.How does Aetrix verify that MSP430G2232IN20 is sourced from the original manufacturer or authorized distributors?
All MSP430G2232IN20 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 MSP430G2232IN20 meets industry standards.
7.What is the process for return or replacement of MSP430G2232IN20?
All MSP430G2232IN20 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2232IN20, 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 MSP430G2232IN20 part is unused and in its original packaging.
Return procedure for MSP430G2232IN20:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MSP430G2232IN20 Tags
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