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Texas Instruments MSP430F1232IPWR

Name: MSP430F1232IPWR
Brand: Texas Instruments
SKU: MSP430F1232IPWR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MSP430F1232IPWR

Manufacturer:: Texas Instruments

Category:: Microcontrollers

Package:: 28-TSSOP (0.173", 4.40mm Width)

Datasheet:: MSP430F1232IPWR.pdf

Description:: IC MCU 16BIT 8KB FLASH 28TSSOP

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Product details

Overview

MSP430F1232IPWR from Texas Instruments is an ultralow-power 16-bit RISC microcontroller featuring 8KB flash memory, 256B RAM, a 10-bit 200-ksps ADC with internal reference and data transfer controller, Timer_A3 with three capture/compare registers, and USART0 supporting UART/SPI protocols. It operates from 1.8 V to 3.6 V and supports five power-saving modes, enabling battery-powered sensor nodes and portable measurement systems.

For engineers reviewing the MSP430F1232IPWR datasheet, MSP430F1232IPWR pinout, MSP430F1232IPWR application, or MSP430F1232IPWR equivalent, key selection considerations include its 28-pin TSSOP package, integrated brownout protection, JTAG/debug interface via P1.x pins, and support for serial onboard programming without external voltage.

Technical Context

The MSP430F1232IPWR implements a 16-bit CPU with seven addressing modes and register-to-register execution in one cycle. Its basic clock module integrates a digitally controlled oscillator (DCO), 32-kHz crystal support, and selectable ACLK/SMCLK/MCLK sources - enabling wake-up from standby mode in under 6 µs.

Peripheral integration includes three 8-bit I/O ports (P1, P2, P3), where P3 adds USART0 functionality exclusive to the x12x2 family. The ADC10 uses autoscan and DTC to autonomously store conversion results in RAM, while Timer_A3 provides PWM, interval timing, and input capture with interrupt capability per channel.

Key Specifications

Parameter	Value and Actual Design Meaning
Core Architecture	16-bit RISC CPU with 16 general-purpose registers and constant generators for optimized code efficiency
Memory	8KB flash + 256B RAM + 1KB ROM boot loader; supports in-system programming and BSL via UART
ADC	10-bit SAR ADC at 200 ksps with internal reference, sample-and-hold, autoscan, and DTC for zero-CPU-conversion sequencing
Power Modes	Five low-power modes (LPM0–LPM4); standby current = 0.7 µA, off-mode RAM retention = 0.1 µA
Communication	USART0 with software-selectable UART or SPI; double-buffered TX/RX; supports 3–4 wire SPI and full-duplex UART
Clock System	Digital-controlled oscillator (DCO) with <6 µs wake-up; supports 32-kHz crystal, high-frequency crystal, external resistor, or clock source
I/O Pins	22 programmable I/O pins across P1 (8), P2 (6), and P3 (8); all support interrupt on edge select

Pinout & Package

Package: 28-pin plastic TSSOP (PW), RoHS-compliant, body size 9.7 mm × 4.4 mm × 1.2 mm.

Pin/Terminal	Circuit Role	Design Meaning
1 / TEST	JTAG test mode select	Activates JTAG debug interface on P1.x; required for programming and emulation
2 / VCC	Supply voltage	Primary power rail (1.8–3.6 V); must be decoupled near pin with 100 nF ceramic capacitor
3 / P2.5/ROSC	DCO resistor input	Connects external resistor to set nominal DCO frequency; no pull-up/pull-down required
4 / VSS	Ground reference	System ground return; tie to PCB ground plane with low-inductance path
5 / XOUT	Crystal oscillator output	Drives external 32-kHz crystal; requires load capacitance matching per crystal spec
6 / XIN	Crystal oscillator input	Input for 32-kHz watch crystal or external clock source; high-impedance CMOS input
7 / RST/NMI	Reset/nonmaskable interrupt	PuLL-up recommended; asserts reset on falling edge; also serves as NMI input
8 / P2.0/ACLK/A0	ACLK output / ADC input A0	Can drive ACLK to external circuitry or serve as analog input channel 0
9 / P2.1/INCLK/A1	Timer_A clock input / ADC input A1	Accepts external clock for Timer_A or functions as analog input channel 1
10 / P2.2/TA0/A2	Timer_A CCI0B / ADC input A2	Capture input for Timer_A channel 0 or analog input channel 2; also BSL receive pin
11 / P3.0/STE0/A5	USART0 slave transmit enable / ADC input A5	Controls SPI slave operation or serves as analog input channel 5
12 / P3.1/SIMO0	USART0 SPI data out	Master-out/slave-in line for SPI; bidirectional when configured for UART
13 / P3.2/SOMI0	USART0 SPI data in	Master-in/slave-out line for SPI; bidirectional when configured for UART
14 / P3.3/UCLK0	USART0 clock I/O	External clock input for UART/SPI or SPI clock output; direction controlled by UCTL
15 / P3.4/UTXD0	USART0 UART transmit	Asynchronous serial transmit pin; open-drain capable with internal pull-up
16 / P3.5/URXD0	USART0 UART receive	Asynchronous serial receive pin; Schmitt-triggered for noise immunity
17 / P3.6/A6	ADC input A6	Analog input channel 6; supports single-ended or differential measurements with VREF±
18 / P3.7/A7	ADC input A7	Analog input channel 7; shares VREF+ and VREF− with other ADC channels
19 / P2.3/TA1/A3/VREF−	Timer_A CCI1B / ADC A3 / VREF−	Negative reference for ADC; also Timer_A channel 1 capture input or analog input A3
20 / P2.4/TA2/A4/VREF+	Timer_A CCI2B / ADC A4 / VREF+	Positive reference for ADC; also Timer_A channel 2 capture input or analog input A4
21 / P1.0/TACLK/ADC10CLK	Timer_A clock / ADC clock	Provides clock source for Timer_A or ADC10; configurable via TACTL and ADC10CTL1
22 / P1.1/TA0	Timer_A CCI0A / BSL TX	Capture input for Timer_A channel 0; also bootstrap loader transmit pin
23 / P1.2/TA1	Timer_A CCI1A	Capture input for Timer_A channel 1; supports edge-triggered event counting
24 / P1.3/TA2	Timer_A CCI2A	Capture input for Timer_A channel 2; used in multi-phase timing or pulse-width analysis
25 / P1.4/SMCLK/TCK	Sub-main clock / JTAG TCK	Outputs SMCLK for peripheral sync or serves as JTAG test clock during programming
26 / P1.5/TA0/TMS	Timer_A Out0 / JTAG TMS	Compare output for Timer_A channel 0 or JTAG test mode select signal
27 / P1.6/TA1/TDI/TCLK	Timer_A Out1 / JTAG TDI/TCLK	Compare output or JTAG test data input/test clock depending on instruction
28 / P1.7/TA2/TDO/TDI	Timer_A Out2 / JTAG TDO/TDI	Compare output or JTAG test data output/data input depending on instruction

Key Features

Feature	Design Value
Ultralow-power operation	Active mode: 200 µA @ 1 MHz, 2.2 V; LPM4 (off mode): 0.1 µA with RAM retention
Integrated analog subsystem	10-bit ADC with internal reference, sample-and-hold, autoscan, and DTC for autonomous data acquisition
Flexible clocking	Digital-controlled oscillator (DCO) with <6 µs wake-up; supports crystal, RC, and external clock sources
Hardware serial interface	USART0 with dual-mode UART/SPI support, double-buffered TX/RX, and programmable baud rate
Secure flash programming	On-chip security fuse prevents unauthorized readout; BSL password protection enabled via UART
Robust system management	Supply voltage brownout detection, watchdog timer (configurable as interval timer), and POR circuitry

Applications

Wireless Sensor Node	Portable Medical Monitor
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and motion data for BLE transmission. IC Role / Device Role / Timing Role: Central MCU managing ADC sampling, data preprocessing, low-power scheduling, and UART communication to radio module. Use Value: 0.1 µA off-mode current extends coin-cell life beyond 5 years; DTC-enabled ADC reduces CPU wake-ups by 90% during continuous sensing.	Use Scenario: Handheld pulse oximeter performing real-time analog front-end signal conditioning and SpO₂ calculation. IC Role / Device Role / Timing Role: Signal acquisition controller driving LED drivers, synchronizing photodiode sampling, and computing saturation via embedded algorithm. Use Value: 200-ksps ADC captures fast photoplethysmogram waveforms; integrated reference eliminates external precision voltage source.
Glass Breakage Detector	Industrial Data Logger
Use Scenario: Standalone acoustic security sensor analyzing audio spectrum for glass fracture signatures using wave digital filter. IC Role / Device Role / Timing Role: Real-time DSP engine executing fixed-point filtering and threshold detection on raw microphone ADC data. Use Value: 16-bit RISC core achieves 125 ns instruction cycle time; Timer_A3 generates precise sampling intervals for consistent FFT bin alignment.	Use Scenario: Ruggedized field logger recording thermocouple and pressure sensor readings every 10 seconds over 6 months. IC Role / Device Role / Timing Role: Autonomous data acquisition unit controlling sensor excitation, reading multiple ADC channels, and storing results to flash. Use Value: Five power modes allow deep sleep between samples; flash memory endurance supports >100k write cycles for long-term logging.

Wireless Sensor Node

Portable Medical Monitor

Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and motion data for BLE transmission.

IC Role / Device Role / Timing Role: Central MCU managing ADC sampling, data preprocessing, low-power scheduling, and UART communication to radio module.

Use Value: 0.1 µA off-mode current extends coin-cell life beyond 5 years; DTC-enabled ADC reduces CPU wake-ups by 90% during continuous sensing.

Use Scenario: Handheld pulse oximeter performing real-time analog front-end signal conditioning and SpO₂ calculation.

IC Role / Device Role / Timing Role: Signal acquisition controller driving LED drivers, synchronizing photodiode sampling, and computing saturation via embedded algorithm.

Use Value: 200-ksps ADC captures fast photoplethysmogram waveforms; integrated reference eliminates external precision voltage source.

Glass Breakage Detector

Industrial Data Logger

Use Scenario: Standalone acoustic security sensor analyzing audio spectrum for glass fracture signatures using wave digital filter.

IC Role / Device Role / Timing Role: Real-time DSP engine executing fixed-point filtering and threshold detection on raw microphone ADC data.

Use Value: 16-bit RISC core achieves 125 ns instruction cycle time; Timer_A3 generates precise sampling intervals for consistent FFT bin alignment.

Use Scenario: Ruggedized field logger recording thermocouple and pressure sensor readings every 10 seconds over 6 months.

IC Role / Device Role / Timing Role: Autonomous data acquisition unit controlling sensor excitation, reading multiple ADC channels, and storing results to flash.

Use Value: Five power modes allow deep sleep between samples; flash memory endurance supports >100k write cycles for long-term logging.

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultralow-power mixed-signal microcontroller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MSP430F1222IPWR	4KB flash (vs. 8KB), identical peripherals, same pinout and package	Suitable for simpler firmware with smaller code footprint; no change to PCB or power design	Select when application firmware fits within 4KB and no future expansion is anticipated
MSP430F1232IRHB	Same core specs but in 32-pin QFN (RHB) package with exposed thermal pad	Better thermal performance and higher I/O count (28 pins vs. 22 usable); requires different layout	Choose for space-constrained designs needing improved thermal dissipation or additional GPIO

Compared with MSP430F1222IPWR, the MSP430F1232IPWR enables larger firmware with real-time OS or protocol stacks; compared with MSP430F1232IRHB, it offers drop-in compatibility in TSSOP-based production lines without requalification.

Availability

MSP430F1232IPWR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, acoustic security detectors, and industrial data loggers requiring stable component supply and long-term manufacturability.

Supply support for MSP430F1232IPWR 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 focused on analog and embedded processing technologies, serving industrial, automotive, and consumer markets with energy-efficient solutions.

The MSP430F1232IPWR belongs to TI's MSP430x12x2 ultralow-power mixed-signal MCU product line, designed specifically for battery-operated measurement and sensing applications demanding extended runtime and integrated analog peripherals.

FAQ

What is the maximum operating frequency of the MSP430F1232IPWR?

The MSP430F1232IPWR does not specify a maximum system clock frequency in its datasheet. Its DCO is calibrated to operate up to approximately 8 MHz under typical conditions, and the device supports MCLK frequencies up to 8 MHz when driven by external crystals or clocks. The 125 ns instruction cycle time corresponds to a 8-MHz CPU clock, which is the practical upper limit for reliable operation across the full temperature and voltage range.

Does the MSP430F1232IPWR support hardware debugging?

Yes, the MSP430F1232IPWR supports full hardware debugging via its integrated JTAG interface using pins P1.4 (TCK), P1.5 (TMS), P1.6 (TDI/TCLK), and P1.7 (TDO/TDI). The TEST pin (Pin 1) enables JTAG mode, and the device is compatible with standard TI MSP-FET and third-party JTAG emulators for real-time debugging, flash programming, and boundary scan testing.

How many ADC input channels does the MSP430F1232IPWR have?

The MSP430F1232IPWR has eight ADC input channels: A0 through A7. Channels A0–A4 are accessible via P2.0, P2.1, P2.2, P2.3, and P2.4 respectively; A5–A7 are routed to P3.0, P3.6, and P3.7. All channels support single-ended and differential measurements using the shared VREF+ and VREF− terminals.

Can the MSP430F1232IPWR perform UART communication without external components?

Yes, the MSP430F1232IPWR can perform UART communication using its built-in USART0 module and internal DCO clock. No external crystal is required for basic UART operation - the DCO can be software-calibrated to achieve baud rates within ±3% accuracy. For higher precision (e.g., 9600 or 115200 bps), a 32-kHz crystal or external clock source is recommended.

Is the MSP430F1232IPWR pin-compatible with other MSP430x12x2 devices in TSSOP package?

Yes, the MSP430F1232IPWR is fully pin-compatible with other 28-pin TSSOP MSP430x12x2 variants including MSP430F1222IPWR. All share identical pin functions, electrical characteristics, and package dimensions, allowing direct substitution in existing designs when flash size or firmware requirements change.

MSP430F1232IPWR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Package/Case:: 28-TSSOP (0.173", 4.40mm Width)

Series:: MSP430x1xx

Packaging:: Tape & Reel (TR)

Product Status:: Active

Programmable:: Verified

Core Processor:: MSP430 CPU16

Core Size:: 16-Bit

Speed:: 8MHz

Connectivity:: SPI, UART/USART

Peripherals:: Brown-out Detect/Reset, POR, PWM, WDT

Number of I/O:: 22

Program Memory Size:: 8KB (8K x 8 + 256B)

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:

MSP430F1232IPWR FAQ

1.How can I place an order for MSP430F1232IPWR through Aetrix?

Please submit a Request for Quotation (RFQ) for MSP430F1232IPWR 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 MSP430F1232IPWR reliable?

The price and inventory of MSP430F1232IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F1232IPWR is usually 5 days.

3.What payment methods are accepted for MSP430F1232IPWR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F1232IPWR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MSP430F1232IPWR?

MSP430F1232IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MSP430F1232IPWR 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 MSP430F1232IPWR?

For technical support, including MSP430F1232IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F1232IPWR requirements.

6.How does Aetrix verify that MSP430F1232IPWR is sourced from the original manufacturer or authorized distributors?

All MSP430F1232IPWR 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 MSP430F1232IPWR meets industry standards.

7.What is the process for return or replacement of MSP430F1232IPWR?

All MSP430F1232IPWR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F1232IPWR, 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 MSP430F1232IPWR part is unused and in its original packaging.

Return procedure for MSP430F1232IPWR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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