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Texas Instruments MSP430G2232IPW14
- Part No.:
- MSP430G2232IPW14
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2232IPW14.pdf
- Description:
- IC MCU 16BIT 2KB FLASH 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,179
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Product details
Overview
MSP430G2232IPW14 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller 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 and I²C, and up to 8 capacitive-touch enabled I/O pins - deployed in battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430G2232IPW14 datasheet, MSP430G2232IPW14 pinout, MSP430G2232IPW14 application, or MSP430G2232IPW14 equivalent, key selection criteria include its 14-pin TSSOP package, 1.8–3.6 V supply range, sub-1 µs wake-up from standby, integrated brownout detection, and Spy-Bi-Wire debug interface for low-cost development.
Technical Context
The MSP430G2232IPW14 implements a 16-bit CPU with seven addressing modes and 51 instructions, paired with a digitally controlled oscillator (DCO) calibrated at 1/8/12/16 MHz for fast active-mode entry. Its clock system delivers ACLK (LF oscillator or 32-kHz crystal), SMCLK (DCO-derived), and MCLK (system clock) with independent gating per power mode.
Peripherals are memory-mapped and accessible via all CPU instructions. The ADC10 module supports 8-channel autoscan with internal 1.5 V/2.5 V reference, sample-and-hold, and DMA-triggered data transfer - exclusively available on G2x32 variants. Port P1 provides eight programmable I/O pins with individually configurable pullup/pulldown resistors and pin-oscillator enable for capacitive touch.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and 51-instruction set; enables efficient C code execution and deterministic interrupt latency. |
| Flash / RAM | 2 kB flash program memory and 256 B RAM; sufficient for compact firmware with ADC data buffering and communication stack. |
| ADC Resolution & Speed | 10-bit SAR ADC with 200 kS/s sampling rate and autoscan across 8 analog inputs; supports continuous sensor monitoring without CPU intervention. |
| Power Modes | Five low-power modes including LPM4 (0.1 µA off-mode with RAM retention); extends battery life in intermittent-sensing applications. |
| Supply Voltage | 1.8 V to 3.6 V operation; compatible with single-cell Li-ion, LiFePO₄, or two-cell alkaline battery systems. |
| Debug Interface | Spy-Bi-Wire 2-wire interface (RST/NMI and TEST/SBWTCK pins); enables full emulation and flash programming with minimal PCB footprint. |
| Package | 14-pin TSSOP (PW14); 5.0 × 4.4 mm body, 0.65 mm pitch; suitable for space-constrained industrial and consumer PCBs. |
Pinout & Package
Package: 14-pin Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153 compliant, with exposed pad not required. Pinout validated per TI SLAS723H datasheet Figure 1 (PW PACKAGE top view) and Table 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DVCC (Pin 1) | Digital supply voltage | Primary 1.8–3.6 V power input for core logic and digital I/O; requires local 100 nF decoupling. |
| P1.0/TA0CLK/ACLK/A0 (Pin 2) | Multi-function I/O | Configurable as timer clock input, ACLK output, or ADC channel 0; enables flexible clock tree routing and analog sensing. |
| P1.1/TA0.0/A1 (Pin 3) | Timer/ADC I/O | Timer_A capture/compare channel 0 and ADC input A1; supports PWM generation and analog acquisition on same pin. |
| P1.2/TA0.1/A2 (Pin 4) | Timer/ADC I/O | Timer_A capture/compare channel 1 and ADC input A2; allows synchronized timing and sensing in compact designs. |
| P1.3/ADC10CLK/A3/VREF-/VEREF- (Pin 5) | ADC reference & clock | Provides ADC conversion clock output and negative reference input; supports external reference or internal VREF- derivation. |
| P1.4/TA0.2/SMCLK/A4/VREF+/VEREF+/TCK (Pin 6) | Multi-function I/O | Combines timer channel 2, SMCLK output, ADC positive reference, and JTAG test clock - requires careful signal isolation in layout. |
| P1.5/TA0.0/SCLK/A5/TMS (Pin 7) | USI/JTAG I/O | Shared between Timer_A output, USI SPI clock, ADC input A5, and JTAG test mode select; function selected by peripheral enable bits. |
| P1.6/TA0.1/SDO/SCL/A6/TDI/TCLK (Pin 8) | USI/JTAG I/O | Supports SPI data out, I²C clock, ADC A6, JTAG test data in, and timer output - critical for debug and communication coexistence. |
| P1.7/SDI/SDA/A7/TDO/TDI (Pin 9) | USI/JTAG I/O | Enables SPI data in, I²C data, ADC A7, and dual-role JTAG test data I/O; TDO/TDI selection controlled by JTAG instruction. |
| RST/NMI/SBWTDIO (Pin 10) | Reset/debug bidirectional | Active-low reset input, non-maskable interrupt, and Spy-Bi-Wire data I/O; requires external pullup and ESD protection for robust field operation. |
| TEST/SBWTCK (Pin 11) | Debug clock input | Test mode select and Spy-Bi-Wire clock; must be driven low during normal operation to disable test mode and prevent spurious resets. |
| XOUT/P2.7 (Pin 12) | Oscillator output | Crystal oscillator buffer output or general-purpose I/O; if used as input, P2SEL.7 must be cleared to avoid excess current draw. |
| XIN/P2.6/TA0.1 (Pin 13) | Oscillator input | 32-kHz crystal or external clock input, also serves as Timer_A compare output; supports precision real-time clocking and timing functions. |
| DVSS (Pin 14) | Digital ground | Reference return path for DVCC; must be connected to low-impedance ground plane with short trace to minimize noise coupling into ADC and timers. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low standby current | 0.5 µA in LPM3 mode with ACLK active - enables multi-year operation on coin-cell batteries in wireless sensors. |
| Integrated ADC reference | Internal 1.5 V/2.5 V reference with calibration data stored in flash segment A - eliminates external reference IC and reduces BOM cost. |
| Capacitive-touch I/O | Individual pin-oscillator enable on all P1.x pins - supports up to 8 self-capacitance touch buttons without external components. |
| Fast wake-up capability | <1 µs transition from LPM4 to active mode using DCO - ensures timely response to external interrupts in event-driven systems. |
| Programmable security fuse | On-chip code protection via blown security fuse - prevents unauthorized firmware readout while allowing full debug access during development. |
Applications
| Smart Thermostat Sensor Node | Portable Blood Glucose Monitor |
|---|---|
Use Scenario: Compact, battery-powered indoor temperature/humidity sensor transmitting data via BLE or sub-GHz RF every 30 seconds. IC Role / Device Role / Timing Role: MSP430G2232IPW14 acts as main controller, acquiring analog sensor outputs (NTC, capacitive humidity), performing linearization, managing sleep/wake cycles, and interfacing with transceiver. Use Value: 0.1 µA off-mode current and integrated ADC reduce average system current to <2 µA, enabling >5-year CR2032 battery life. | Use Scenario: Handheld medical device measuring glucose concentration from electrochemical test strips with LCD display and USB charging. IC Role / Device Role / Timing Role: MSP430G2232IPW14 controls precise current sourcing for strip excitation, digitizes analog response via ADC10, manages touch-button UI, and handles USB enumeration. Use Value: 10-bit ADC with internal reference and autoscan enables accurate 15-bit-equivalent measurements without external op-amps or references. |
| Industrial Motor Status Indicator | Wireless Vibration Sensor Node |
Use Scenario: DIN-rail mounted indicator showing motor run status, temperature, and fault codes using LED arrays and thermistor inputs. IC Role / Device Role / Timing Role: MSP430G2232IPW14 reads thermistor via ADC, drives LEDs through GPIO, monitors contact closure inputs, and logs events to flash. Use Value: Five power-saving modes and brownout detection ensure reliable operation during unstable 24 V DC supply dips common in factory environments. | Use Scenario: Battery-powered accelerometer node on rotating machinery capturing vibration spectra and transmitting FFT peaks wirelessly every 10 minutes. IC Role / Device Role / Timing Role: MSP430G2232IPW14 configures accelerometer SPI interface, triggers periodic ADC conversions of analog accelerometer output, computes peak detection in firmware, and manages radio sleep. Use Value: USI SPI interface and Timer_A PWM output allow direct control of external MEMS accelerometer and low-jitter sampling synchronization. |
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 |
|---|---|---|---|
| MSP430G2212IPW14 | No ADC10 module; 128 B RAM; identical package, core, and peripherals except analog subsystem. | Not suitable for analog sensing; appropriate only for digital control or capacitive-touch-only applications. | Select when analog conversion is unnecessary and lowest BOM cost is prioritized over sensing capability. |
| MSP430G2332IPW14 | 4 kB flash, 256 B RAM, 4-channel ADC10; same 14-pin TSSOP package and pinout. | Higher flash supports larger firmware with protocol stacks; additional ADC channels enable multi-sensor systems. | Choose when future firmware expansion or additional analog inputs are anticipated without changing PCB layout. |
Compared with MSP430G2212IPW14, the MSP430G2232IPW14 adds essential ADC functionality for sensor interfacing, while MSP430G2332IPW14 extends flash and ADC channel count - making the MSP430G2232IPW14 the optimal balance of analog capability, code space, and footprint for cost-sensitive embedded sensing.
Availability
MSP430G2232IPW14 is available at Aetrix Electronics and suitable for smart thermostat sensor nodes, portable medical monitors, industrial status indicators, wireless vibration sensors, and battery-powered environmental loggers requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2232IPW14 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 targets ultra-low-power embedded applications where extended battery life, small footprint, and integrated analog peripherals are critical - exemplified by the MSP430G2232IPW14's optimized blend of ADC, timer, and communication resources in a 14-pin package.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2232IPW14?
The MSP430G2232IPW14 supports a maximum ADC10 sampling rate of 200 kS/s under specified conditions (VCC ≥ 2.2 V, ADC10CLK = 5 MHz). This rate is achievable in single-conversion or autoscan mode with internal reference enabled, and is documented in the Electrical Characteristics section of the SLAS723H datasheet. The MSP430G2232IPW14 ADC architecture uses a successive approximation register (SAR) core with built-in sample-and-hold, ensuring consistent timing across all 8 analog input channels.
Does the MSP430G2232IPW14 support hardware UART communication?
No, the MSP430G2232IPW14 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 software using Timer_A outputs and GPIO pins - a technique documented in TI application report SLAA333. The MSP430G2232IPW14 USI lacks UART framing logic, start/stop bit generation, or automatic baud rate control, so hardware UART is not available on this device.
What is the function of the TEST/SBWTCK pin on the MSP430G2232IPW14 during normal operation?
During normal operation, the TEST/SBWTCK pin on the MSP430G2232IPW14 must be held low to disable JTAG/Spy-Bi-Wire test mode and prevent unintended device resets. If left floating or pulled high, the device may enter test mode, causing loss of I/O functionality and potential system lockup. TI recommends connecting TEST directly to DVSS through a 10-kΩ resistor. This configuration ensures robust immunity to noise while preserving full debug access when the Spy-Bi-Wire interface is actively used.
Can the MSP430G2232IPW14 operate from a single 1.5 V alkaline cell?
No, the MSP430G2232IPW14 requires a minimum supply voltage of 1.8 V for guaranteed operation across all temperatures and frequencies, as specified in the Recommended Operating Conditions table of SLAS723H. A single 1.5 V alkaline cell falls below this threshold, especially under load or at end-of-life. To use alkaline power, two cells in series (providing 2.4–3.2 V) are required, or a boost converter must be added. The MSP430G2232IPW14's brownout detector (BOR) will hold the device in reset if DVCC drops below ~1.7 V, preventing erratic behavior.
How many capacitive-touch sensing channels does the MSP430G2232IPW14 support?
The MSP430G2232IPW14 supports up to 8 capacitive-touch sensing channels using its integrated pin-oscillator circuitry on Port P1 pins (P1.0–P1.7). Each pin can be individually enabled for capacitive sensing via the PxIES and PxSEL registers, and the resulting oscillation frequency shift is measured using Timer_A gate timing - a method detailed in TI application report SLAA331. No external RC network or dedicated touch controller is required, making the MSP430G2232IPW14 suitable for low-cost touch-button interfaces in consumer and industrial devices.
MSP430G2232IPW14 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- 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:
- 10
- 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:
- Surface Mount
- Supplier Device Package:
MSP430G2232IPW14 FAQ
1.How can I place an order for MSP430G2232IPW14 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2232IPW14 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 MSP430G2232IPW14 reliable?
The price and inventory of MSP430G2232IPW14 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2232IPW14 is usually 5 days.
3.What payment methods are accepted for MSP430G2232IPW14?
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MSP430G2232IPW14 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2232IPW14 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 MSP430G2232IPW14?
For technical support, including MSP430G2232IPW14 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2232IPW14 requirements.
6.How does Aetrix verify that MSP430G2232IPW14 is sourced from the original manufacturer or authorized distributors?
All MSP430G2232IPW14 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 MSP430G2232IPW14 meets industry standards.
7.What is the process for return or replacement of MSP430G2232IPW14?
All MSP430G2232IPW14 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2232IPW14, 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 MSP430G2232IPW14 part is unused and in its original packaging.
Return procedure for MSP430G2232IPW14:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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