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Texas Instruments MSP430G2332IPW14
- Part No.:
- MSP430G2332IPW14
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430G2332IPW14.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,747
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Product details
Overview
MSP430G2332IPW14 from Texas Instruments is an ultra-low-power 16-bit RISC mixed-signal microcontroller in 14-pin TSSOP package, featuring 4 KB Flash, 256 B RAM, 10-bit 200-ksps ADC with internal reference and autoscan, Universal Serial Interface (USI) for SPI/I²C, and one 16-bit Timer_A with three capture/compare registers. It targets battery-powered sensor nodes and portable measurement systems requiring precise analog acquisition and low standby current.
For engineers reviewing the MSP430G2332IPW14 datasheet, MSP430G2332IPW14 pinout, MSP430G2332IPW14 application, or MSP430G2332IPW14 equivalent, this page delivers verified technical context, exact pin functions for TSSOP-14, real-world use cases in capacitive-touch and analog-sensing systems, and two validated alternative options with documented functional differences.
Technical Context
The MSP430G2332IPW14 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 to 1/8/12/16 MHz, plus LF oscillator and 32-kHz crystal support - all selectable via BCSCTL registers.
It includes dedicated hardware modules: USI supporting master/slave SPI and I²C with programmable clock polarity/phase; ADC10 with internal 1.5 V/2.5 V reference, sample-and-hold, and DTC-triggered memory storage; and Timer_A with up/down mode, PWM generation, and interrupt-capable capture/compare on TA0.0–TA0.2 pins.
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 timing control. |
| Flash / RAM | 4 KB Flash program memory + 256 B RAM; sufficient for firmware with ADC data logging, USI communication stacks, and capacitive-touch algorithms. |
| ADC Resolution & Speed | 10-bit SAR ADC with 200-ksps sampling rate and autoscan across 8 channels; supports continuous analog monitoring without CPU intervention via DTC. |
| Power Consumption | Active mode: 220 µA at 1 MHz/2.2 V; LPM4 (RAM retention): 0.1 µA; enables multi-year operation on coin-cell batteries in sensor endpoints. |
| USI Interfaces | Universal Serial Interface supporting hardware SPI (3-wire or 4-wire) and I²C (7-bit address, standard/fast mode); eliminates bit-banging overhead for peripheral interfacing. |
| Timer Resource | One 16-bit Timer_A with three capture/compare registers (TA0.0–TA0.2), supporting PWM generation, input capture, and interval timing with independent interrupt vectors. |
| Operating Voltage | 1.8 V to 3.6 V supply range; compatible with single-cell Li-ion, LiFePO₄, or dual-AA alkaline power sources without external regulation. |
Pinout & Package
Package: 14-pin TSSOP (PW14), 5.0 mm × 4.4 mm body, 0.65 mm pitch, exposed pad not present. Pinout validated per TI SLAS723H datasheet Figure 1 (PW PACKAGE top view) and Table 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DVCC) | Supply voltage input | Main digital supply rail; must be decoupled with 100 nF ceramic capacitor near pin for stable core operation. |
| 2 (P1.0/TA0CLK/ACLK/A0) | Multi-function I/O | Configurable as ADC input A0, timer clock source (TA0CLK), or auxiliary clock output (ACLK); shared function requires software configuration via P1SEL/P1DIR. |
| 3 (P1.1/TA0.0/A1) | Multi-function I/O | Supports ADC input A1, Timer_A capture/compare channel 0 (CCI0A/Out0), or general I/O; critical for PWM output or analog sensing. |
| 4 (P1.2/TA0.1/A2) | Multi-function I/O | Enables ADC input A2, Timer_A capture/compare channel 1 (CCI1A/Out1), or capacitive-touch sensing via PinOsc module. |
| 5 (P1.3/ADC10CLK/VREF-/VEREF-/A3) | ADC subsystem terminal | Provides ADC conversion clock output, negative reference input (VREF−), and analog input A3; essential for precision ratiometric measurements. |
| 6 (P1.4/TA0.2/SMCLK/A4/VREF+/VEREF+/TCK) | Multi-function I/O | Combines ADC positive reference (VREF+), Timer_A channel 2 (CCI2A/Out2), SMCLK output, and JTAG test clock - requires careful mode selection. |
| 7 (P1.5/TA0.0/SCLK/A5/TMS) | Multi-function I/O | Serves as Timer_A channel 0 output, USI SPI clock (SCLK), ADC input A5, and JTAG test mode select; conflict-free use requires pin multiplexing control. |
| 8 (P1.6/TA0.1/SDO/SCL/A6/TDI/TCLK) | Multi-function I/O | Supports USI SPI data out (SDO), I²C clock (SCL), ADC input A6, JTAG test data in (TDI), and timer output - selected via P1SEL and USICTL registers. |
| 9 (P1.7/SDI/SDA/A7/TDO/TDI) | Multi-function I/O | Functions as USI SPI data in (SDI), I²C data (SDA), ADC input A7, JTAG test data out (TDO) or in (TDI); mode determined by JTAG instruction or USI configuration. |
| 10 (RST/NMI/SBWTDIO) | Reset & debug interface | Active-low reset input, non-maskable interrupt, and Spy-Bi-Wire debug data I/O; requires external pull-up and RC filter for reliable reset behavior. |
| 11 (TEST/SBWTCK) | Debug interface | Test mode select and Spy-Bi-Wire clock input; used exclusively during programming/debug; must be pulled low during normal operation. |
| 12 (XOUT/P2.7) | Oscillator output | Crystal oscillator output or general-purpose I/O (P2.7); if used as input, P2SEL.7 must be cleared to prevent excessive current per datasheet Note 3. |
| 13 (XIN/P2.6/TA0.1) | Oscillator input | Crystal oscillator input, I/O port P2.6, or Timer_A channel 1 output; primary connection point for 32.768 kHz watch crystal or external clock source. |
| 14 (DVSS) | Digital ground | Digital reference plane; must be connected to system ground with low-inductance path to minimize noise coupling into ADC and timers. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power operation | 0.1 µA in LPM4 (RAM retention) and sub-1 µs wake-up from standby - enables energy harvesting and long-life battery deployments. |
| Capacitive-touch I/O capability | Up to 16 pins support capacitive sensing via integrated PinOsc module; eliminates need for external touch controllers in human-interface designs. |
| Integrated ADC with DTC | 10-bit ADC with Data Transfer Controller automates result storage to RAM without CPU involvement - reduces firmware overhead and power use. |
| Built-in calibration data | Factory-trimmed DCO and ADC10 calibration constants stored in Info Memory Segment A - ensures consistent timing and analog accuracy across temperature/voltage. |
| On-chip emulation logic | Spy-Bi-Wire interface enables full-speed debugging and flash programming using only two pins (SBWTDIO/SBWTCK) - simplifies board layout and test access. |
| Programmable security fuse | Flash code protection via blown security fuse prevents unauthorized read-out of firmware - meets basic IP protection requirements for OEM products. |
Applications
| Smart Sensor Node | Capacitive-Touch Control Panel |
|---|---|
Use Scenario: Battery-powered environmental monitor measuring temperature, humidity, and light via analog sensors. IC Role / Device Role / Timing Role: MSP430G2332IPW14 acts as main controller, performing ADC sampling, data preprocessing, and SPI transmission to a wireless transceiver. Use Value: 200-ksps ADC autoscan captures multiple sensor channels in sequence; LPM4 mode extends 5-year battery life on CR2032. |
Use Scenario: Low-cost appliance control panel with slider and button touch zones. IC Role / Device Role / Timing Role: MSP430G2332IPW14 executes capacitive-touch scanning using PinOsc and processes gestures locally before sending commands. Use Value: Integrated touch sensing eliminates external ICs; 14-pin TSSOP fits compact front-panel PCBs with minimal routing complexity. |
| Portable Medical Instrument | Industrial Data Logger |
Use Scenario: Handheld pulse oximeter acquiring analog photodiode signals and driving OLED display. IC Role / Device Role / Timing Role: MSP430G2332IPW14 manages synchronized ADC sampling, LED timing via Timer_A PWM, and I²C display interface. Use Value: Internal 1.5 V/2.5 V ADC reference ensures stable ratiometric measurements; 1.8–3.6 V operation supports direct connection to lithium coin cell. |
Use Scenario: DIN-rail mounted logger recording voltage/current from industrial sensors over RS-485. IC Role / Device Role / Timing Role: MSP430G2332IPW14 reads analog inputs, timestamps data using Timer_A, and communicates via USI-driven UART bridge. Use Value: USI's flexible SPI/I²C engine interfaces with isolated level-shifters; brownout detector prevents corrupted EEPROM writes during brownouts. |
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 |
|---|---|---|---|
| MSP430G2432IPW14 | 8 KB Flash, same 4 KB RAM, identical peripherals and pinout; higher Flash enables larger firmware with USB stack or advanced filtering. | Required when firmware exceeds 4 KB or needs future feature expansion; no hardware change needed for migration. | Select MSP430G2432IPW14 if bootloader, OTA updates, or complex signal processing require >4 KB code space. |
| MSP430G2332IPW20 | Same core, Flash, RAM, and peripherals but in 20-pin TSSOP; adds four extra I/O pins (P2.0–P2.3) and AVCC/AVSS rails for improved analog separation. | Preferred for designs needing additional GPIOs or enhanced ADC noise immunity via dedicated analog supply/ground. | Choose MSP430G2332IPW20 when analog measurement accuracy is critical or more I/O is required beyond 14-pin constraints. |
Compared with MSP430G2432IPW14, the MSP430G2332IPW14 trades 4 KB Flash for lower cost and same power/performance; versus MSP430G2332IPW20, it sacrifices two analog supply pins and four I/Os for compact footprint - making it optimal for space-constrained, cost-sensitive sensor endpoints.
Availability
MSP430G2332IPW14 is available at Aetrix Electronics and suitable for smart sensor nodes, capacitive-touch interfaces, portable medical instruments, and industrial data loggers requiring stable component supply and long-term manufacturability.
Supply support for MSP430G2332IPW14 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 battery-operated measurement and sensing applications, emphasizing nanowatt-level sleep modes, integrated analog peripherals, and rapid wake-up responsiveness.
FAQ
What is the maximum ADC sampling rate supported by the MSP430G2332IPW14?
The MSP430G2332IPW14 supports a maximum ADC sampling rate of 200 ksps (kilo-samples per second) in its 10-bit SAR architecture. This rate is achievable with internal reference and autoscan enabled, allowing sequential conversion across up to eight analog inputs without CPU intervention - critical for real-time sensor fusion in compact endpoints.
Does the MSP430G2332IPW14 include hardware support for capacitive touch sensing?
Yes, the MSP430G2332IPW14 includes integrated PinOsc hardware enabling capacitive-touch sensing on up to 16 I/O pins. The module uses internal oscillators to detect capacitance changes, eliminating external components. Configuration is done via P1SEL/P2SEL bits and dedicated registers like CACTL1, and it operates independently of the main CPU to reduce power consumption.
Can the MSP430G2332IPW14 operate from a single 1.8 V supply?
Yes, the MSP430G2332IPW14 is fully specified to operate across 1.8 V to 3.6 V, including stable execution at 1.8 V. At this minimum voltage, the DCO delivers up to 1 MHz operation, and all peripherals - including ADC10, USI, and Timer_A - remain functional, enabling compatibility with energy-harvesting sources and single-cell battery systems.
What debug interface does the MSP430G2332IPW14 use, and how many pins are required?
The MSP430G2332IPW14 uses the two-pin Spy-Bi-Wire (SBW) interface for programming and debugging, requiring only RST/NMI/SBWTDIO (Pin 10) and TEST/SBWTCK (Pin 11). This replaces traditional 4-pin JTAG, reducing PCB footprint and test-point count while supporting full-speed flash erase/write, breakpoint setting, and real-time variable inspection.
Is the ADC10 module on the MSP430G2332IPW14 capable of autonomous operation without CPU involvement?
Yes, the ADC10 module on the MSP430G2332IPW14 supports fully autonomous operation using the Data Transfer Controller (DTC). When configured, the DTC automatically stores conversion results in RAM after each sample - even during LPM3 - without waking the CPU, significantly reducing active time and extending battery life in periodic-sampling applications.
MSP430G2332IPW14 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:
- 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:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430G2332IPW14 FAQ
1.How can I place an order for MSP430G2332IPW14 through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430G2332IPW14 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 MSP430G2332IPW14 reliable?
The price and inventory of MSP430G2332IPW14 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430G2332IPW14 is usually 5 days.
3.What payment methods are accepted for MSP430G2332IPW14?
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MSP430G2332IPW14 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430G2332IPW14 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 MSP430G2332IPW14?
For technical support, including MSP430G2332IPW14 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430G2332IPW14 requirements.
6.How does Aetrix verify that MSP430G2332IPW14 is sourced from the original manufacturer or authorized distributors?
All MSP430G2332IPW14 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 MSP430G2332IPW14 meets industry standards.
7.What is the process for return or replacement of MSP430G2332IPW14?
All MSP430G2332IPW14 units undergo pre-shipment inspection (PSI). If there is an issue with MSP430G2332IPW14, 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 MSP430G2332IPW14 part is unused and in its original packaging.
Return procedure for MSP430G2332IPW14:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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