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Texas Instruments MSP430F1222IRHBT
- Part No.:
- MSP430F1222IRHBT
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
MSP430F1222IRHBT.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 32VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:555
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Product details
Overview
MSP430F1222IRHBT from Texas Instruments is an ultralow-power 16-bit RISC microcontroller with 4KB flash, 256B RAM, 10-bit ADC, Timer_A3 with three capture/compare registers, and USART0 supporting UART/SPI modes. It operates from 1.8 V to 3.6 V and achieves active-mode current of 200 µA at 1 MHz/2.2 V, enabling battery-powered sensor nodes and portable measurement systems.
For engineers reviewing the MSP430F1222IRHBT datasheet, MSP430F1222IRHBT pinout, MSP430F1222IRHBT application, or MSP430F1222IRHBT equivalent, key selection criteria include its 28-pin TSSOP and 32-pin QFN package options, integrated brownout protection, programmable code security fuse, and wake-up from standby in <6 µs - critical for energy-constrained embedded designs.
Technical Context
The MSP430F1222IRHBT implements a 16-bit CPU with constant generators and seven addressing modes, executing register operations in one CPU clock cycle. Its basic clock module supports multiple sources: internal DCO (stabilizes in <6 µs), 32-kHz crystal, high-frequency crystal, external resistor, or external clock - enabling flexible low-power timing architectures.
It integrates three independent I/O ports (P1, P2, P3), where P3 adds eight dedicated pins for USART0 (UTXD0/URXD0/SIMO0/SOMI0/UCLK0/STE0) and four additional ADC inputs (A5–A7). The ADC10 includes internal reference, sample-and-hold, autoscan, and Data Transfer Controller (DTC) for autonomous conversions without CPU intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 general-purpose registers and constant generators; enables single-cycle register operations and high code efficiency. |
| Memory | 4KB + 256B flash program memory and 256B RAM; supports in-system programming via BSL using UART interface on P1.1/P2.2. |
| ADC | 10-bit SAR ADC with 200-ksps sampling rate, internal reference, autoscan, and DTC; eliminates CPU polling for multi-channel sensor acquisition. |
| Timer | 16-bit Timer_A3 with three capture/compare registers; supports PWM generation, input capture, interval timing, and interrupt-driven event sequencing. |
| Communication | USART0 with software-selectable UART or SPI mode; provides full-duplex serial connectivity using dedicated P3 pins (UTXD0/URXD0/SIMO0/SOMI0/UCLK0/STE0). |
| Power Modes | Five low-power modes (LPM0–LPM4); standby current is 0.7 µA and off-mode (RAM retention) is 0.1 µA - extends battery life in intermittent-sensing applications. |
| Supply Range | 1.8 V to 3.6 V operation; compatible with single-cell Li-ion, Li-polymer, or dual AA/AAA battery systems without external regulation. |
Pinout & Package
Package: 32-pin QFN (RHB) with exposed thermal pad (recommended connection to VSS). Pin count and function mapping match the MSP430x12x2 family specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 30) | Supply voltage input | Primary power rail; must be decoupled locally with 100 nF ceramic capacitor to ensure stable core and peripheral operation. |
| VSS (Pin 1) | Ground reference | System ground return; connects to QFN power pad (also tied to VSS) for thermal and EMI performance. |
| RST/NMI (Pin 5) | Reset/nonmaskable interrupt input | Active-low reset initiation; also serves as NMI source for critical fault handling or watchdog timeout recovery. |
| XIN (Pin 3), XOUT (Pin 2) | Crytal oscillator terminals | Supports 32-kHz watch crystal for ACLK; enables precise real-time clocking and ultra-low-power sleep timing. |
| P1.0/TACLK/ADC10CLK (Pin 21) | Multi-function I/O | Provides Timer_A clock input or ADC conversion trigger; allows synchronous timing control across analog and timer subsystems. |
| P2.3/TA1/A3/VREF− (Pin 18) | Analog/digital I/O | Serves as Timer_A channel 1 input, ADC input A3, and negative reference terminal - enables ratiometric sensor measurements. |
| P3.4/UTXD0 (Pin 13) | USART transmit output | Dedicated UART transmit pin; supports asynchronous serial communication at configurable baud rates without bit-banging overhead. |
| P3.5/URXD0 (Pin 14) | USART receive input | Dedicated UART receive pin; accepts standard TTL-level serial data for host MCU or wireless transceiver interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow-power operation | 0.1 µA off-mode (RAM retention) and <6 µs wake-up enable rapid duty-cycled sensing in energy-harvesting or coin-cell applications. |
| Integrated USART0 | Dedicated hardware UART/SPI peripheral on P3 pins eliminates software UART overhead and ensures deterministic serial timing. |
| ADC10 with DTC | Autonomous 10-bit conversion sequencing across up to eight channels (A0–A7) with DMA-like result storage - reduces CPU load by >90% in multi-sensor systems. |
| Programmable code protection | Security fuse prevents unauthorized flash read-out; protects firmware IP in deployed edge devices against cloning or reverse engineering. |
| Digital-controlled oscillator (DCO) | Factory-trimmed internal clock source stabilizes in <6 µs; eliminates need for external crystal in cost-sensitive or space-constrained designs. |
Applications
| Wireless Sensor Node | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-powered environmental sensor collecting temperature, humidity, and motion data for periodic BLE/Wi-Fi upload. IC Role / Device Role / Timing Role: Central controller managing ADC sampling, data preprocessing, USART0 transmission to radio module, and LPM3/LPM4 sleep scheduling. Use Value: 0.7 µA standby current and <6 µs wake-up allow >1-year operation on CR2032; integrated UART avoids external level-shifter components. | Use Scenario: Handheld pulse oximeter acquiring analog photodiode signals and driving OLED display via SPI. IC Role / Device Role / Timing Role: Signal acquisition controller running ADC10 autoscan on A0–A3, processing red/IR ratios, and driving display via USART0 SPI mode. Use Value: Internal 1.5V reference and VREF+/VREF− pins enable ratiometric ADC accuracy; 256B RAM suffices for real-time SpO₂ calculation buffers. |
| Industrial Data Logger | Smart Utility Meter Interface |
Use Scenario: DIN-rail mounted logger recording voltage/current waveforms from CT/PT sensors every 10 seconds. IC Role / Device Role / Timing Role: Precision timing and acquisition unit using Timer_A3 for synchronized sampling, ADC10 DTC for burst storage, and USART0 for Modbus RTU communication. Use Value: 200-ksps ADC sampling and autoscan support 16-sample per-cycle waveform capture; brownout protection ensures reliable operation during AC line dips. | Use Scenario: Sub-metering module interfacing with metrology ICs (e.g., ADE7953) and transmitting kWh data over RS-485. IC Role / Device Role / Timing Role: Protocol bridge converting SPI reads from metrology IC to UART-based Modbus ASCII/RTU frames for master controller. Use Value: Dedicated USART0 hardware handles full-duplex RS-485 timing without CPU intervention; 4KB flash stores dual-application firmware images. |
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 |
|---|---|---|---|
| MSP430F1232IRHBT | 8KB flash, same RAM, peripherals, and package; no change in power or timing specs. | Required when firmware exceeds 4KB or future-proofing for feature expansion is needed. | Select if code size headroom or field-upgrade capability is mandatory; identical pinout and migration path. |
| MSP430F2222IRHBT | Newer generation with enhanced USCI (replaces USART0), 16KB flash, higher max frequency (16 MHz), and improved ADC linearity. | Preferred for new designs needing higher throughput, better SNR, or extended peripheral flexibility (e.g., I²C + UART simultaneously). | Choose for greenfield projects prioritizing longevity and performance margin; requires minor firmware adaptation due to USCI register map differences. |
Compared with MSP430F1222IRHBT, MSP430F1232IRHBT offers double flash capacity with zero trade-offs in power or footprint, while MSP430F2222IRHBT delivers architectural upgrades including faster CPU, richer communication options, and superior analog performance - making it suitable for next-generation sensor fusion or predictive maintenance edge nodes.
Availability
MSP430F1222IRHBT is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical monitors, and industrial data loggers requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MSP430F1222IRHBT 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 digital signal technologies with decades of microcontroller innovation.
The MSP430x12x2 product line was designed specifically for ultralow-power portable measurement and battery-operated sensing applications, emphasizing sub-µA sleep currents, fast wake-up, and integrated mixed-signal peripherals.
FAQ
What is the maximum operating frequency of the MSP430F1222IRHBT?
The MSP430F1222IRHBT supports a maximum CPU clock frequency of 8 MHz, derived from its digitally controlled oscillator (DCO) or external crystal sources. This frequency is sufficient for real-time sensor processing and serial communication tasks while maintaining ultralow-power operation - a key design target confirmed in the SLAS361D datasheet's timing specifications. The MSP430F1222IRHBT achieves 125 ns instruction cycle time at this rate.
Does the MSP430F1222IRHBT support hardware UART communication?
Yes, the MSP430F1222IRHBT includes USART0, a hardware peripheral that supports both asynchronous UART and synchronous SPI protocols. UART functionality is implemented on dedicated P3 pins: UTXD0 (P3.4) and URXD0 (P3.5). This eliminates software UART overhead and ensures accurate baud-rate generation - a confirmed capability documented in the functional block diagram and peripheral file map of the MSP430F1222IRHBT datasheet.
How many ADC input channels does the MSP430F1222IRHBT have?
The MSP430F1222IRHBT provides eight analog input channels (A0 through A7), accessible via P2.0, P2.1, P2.2, P2.3, P2.4, P3.0, P3.6, and P3.7. These are fully supported by the integrated 10-bit ADC10 module with autoscan and Data Transfer Controller (DTC). Channel count and pin mapping are explicitly listed in the Terminal Functions table for MSP430x12x2 in the SLAS361D datasheet.
What package type is used for the MSP430F1222IRHBT?
The MSP430F1222IRHBT uses a 32-pin QFN package with wettable flanks (RHB designation), featuring an exposed thermal pad recommended for connection to VSS. This package is confirmed in the "AVAILABLE OPTIONS" table and pin designation diagrams for MSP430x12x2 in the SLAS361D datasheet, distinguishing it from the 20-pin or 28-pin SOWB/TSSOP variants.
Is the MSP430F1222IRHBT pin-compatible with other MSP430x12x2 devices?
Yes, the MSP430F1222IRHBT shares identical pinout and electrical characteristics with other RHB-package MSP430x12x2 devices, including MSP430F1232IRHBT and MSP430F11xx2IRHBT variants. Pin functions, numbering, and package dimensions are standardized across the family - verified in the RHB top-view diagrams and Terminal Functions tables in SLAS361D - enabling direct substitution where flash/RAM requirements align.
MSP430F1222IRHBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 32-VFQFN Exposed Pad
- 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:
- 4KB (4K 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:
MSP430F1222IRHBT FAQ
1.How can I place an order for MSP430F1222IRHBT through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430F1222IRHBT 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 MSP430F1222IRHBT reliable?
The price and inventory of MSP430F1222IRHBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430F1222IRHBT is usually 5 days.
3.What payment methods are accepted for MSP430F1222IRHBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430F1222IRHBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430F1222IRHBT?
MSP430F1222IRHBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430F1222IRHBT 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 MSP430F1222IRHBT?
For technical support, including MSP430F1222IRHBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430F1222IRHBT requirements.
6.How does Aetrix verify that MSP430F1222IRHBT is sourced from the original manufacturer or authorized distributors?
All MSP430F1222IRHBT 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 MSP430F1222IRHBT meets industry standards.
7.What is the process for return or replacement of MSP430F1222IRHBT?
All MSP430F1222IRHBT units undergo pre-shipment inspection (PSI). If there is an issue with MSP430F1222IRHBT, 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 MSP430F1222IRHBT part is unused and in its original packaging.
Return procedure for MSP430F1222IRHBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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