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Texas Instruments MSP430AFE222IPWR
- Part No.:
- MSP430AFE222IPWR
- Manufacturer:
- Texas Instruments
- Category:
- Microcontrollers
- Package:
- 24-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MSP430AFE222IPWR.pdf
- Description:
- IC MCU 16BIT 4KB FLASH 24TSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MSP430AFE222IPWR from Texas Instruments is an ultra-low-power mixed-signal microcontroller designed for precision metrology applications. It integrates two independent 24-bit sigma-delta ADCs with differential PGA inputs, a 16-bit RISC CPU running up to 12 MHz, 4 KB flash, 256 B RAM, and USART (UART/SPI) interface - all in a 24-pin TSSOP package. It targets single-phase electricity meters and digital power monitoring where low standby current (0.5 µA) and high-resolution analog acquisition are critical.
For engineers reviewing the MSP430AFE222IPWR datasheet, MSP430AFE222IPWR pinout, MSP430AFE222IPWR application, or MSP430AFE222IPWR equivalent, key selection criteria include dual 24-bit SD24_A ADC channel count, LPM4 current of 0.1 µA, 2.2–3.6 V operating range, TSSOP-24 package compatibility, and integration of hardware multiplier and calibrated DCO oscillator.
Technical Context
The MSP430AFE222IPWR implements a 16-bit RISC CPU with constant generators and five programmable low-power modes, enabling sub-1 µs wake-up from standby. Its analog subsystem centers on two independent SD24_A modules, each supporting differential input pairs, internal reference buffering, and temperature sensing - configured via dedicated control registers and bit-stream I/O pins (SDCLK, SD0DO, SD1DO).
Digital peripherals include Timer_A3 with three capture/compare registers, a 16-bit hardware multiplier supporting MAC operations, and a flexible USART0 supporting asynchronous UART or synchronous SPI - all clocked by MCLK, SMCLK, or ACLK sourced from DCO, VLO, or external crystal (up to 16 MHz).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 16-bit RISC CPU with 16 registers and constant generators; enables compact, efficient C code for metering firmware. |
| ADC Resolution & Count | Two independent 24-bit sigma-delta ADCs (SD24_A); supports simultaneous high-precision voltage/current measurement in polyphase metering. |
| Flash / RAM | 4 KB flash memory and 256 B RAM; sufficient for basic metrology algorithms, calibration tables, and communication stack. |
| Supply Voltage Range | 1.8 V to 3.6 V; compatible with standard 3.3 V and 2.5 V system rails, including battery-backed operation. |
| Low-Power Modes | Five power-saving modes; LPM4 draws only 0.1 µA at 2.2 V, enabling >10-year battery life in portable meters. |
| Max System Clock | 12 MHz MCLK (DCO-based); allows real-time processing of ADC data streams without external clock source. |
| ESD Rating | ±1000 V HBM; meets industrial metering ESD robustness requirements per IEC 61000-4-2 Level 3. |
Pinout & Package
Package: 24-pin TSSOP (PW), 7.8 mm × 4.4 mm body size, lead pitch 0.65 mm. RoHS-compliant, surface-mountable with standard reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A0.0+/A0.0− | SD24_A Channel 0 differential analog input | Primary high-accuracy input pair for voltage sensing; requires matched PCB routing and guard traces. |
| A1.0+/A1.0− | SD24_A Channel 1 differential analog input | Secondary input pair for current sensing; supports PGA gain configuration up to 32×. |
| VREF | Reference voltage I/O | Accepts external 2.5 V reference or outputs internal 1.2 V bandgap; used for ADC reference stability. |
| P1.1/TA1/SDCLK | Multi-function pin | Provides SD24_A bit-stream clock output; must be routed with controlled impedance for clean timing. |
| P1.2/TA0/SD0DO | Multi-function pin | Carries SD24_A bit-stream data for Channel 0; synchronized to SDCLK for deterministic sampling. |
| P1.3/UTXD0/SD1DO | Multi-function pin | Carries SD24_A bit-stream data for Channel 1; shares UART TX function but not active simultaneously. |
| RST/NMI/SBWTDIO | Reset / NMI / debug I/O | Enables Spy-Bi-Wire programming and debugging; requires pull-up resistor for reliable reset assertion. |
| TEST/SBWTCK | Debug clock input | Required for JTAG/Spy-Bi-Wire programming; must be tied to AVSS when not in use per TI recommendation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 24-bit SD24_A ADCs | Enables concurrent high-resolution measurement of voltage and current with built-in PGA, reference buffer, and temperature sensor - eliminating need for external signal-conditioning ICs. |
| Ultra-low LPM4 current (0.1 µA) | Supports long-term energy harvesting or coin-cell operation in smart meter endpoints without compromising measurement readiness. |
| Calibrated DCO with <1 µs wake-up | Allows rapid transition from sleep to active mode for time-triggered sampling, reducing average system power in burst-mode acquisition. |
| Hardware 16×16 multiplier | Accelerates RMS, harmonic, and tariff calculation in firmware - critical for Class 0.5/1.0 electricity meter compliance. |
| Integrated SVS/SVM | Provides programmable supply voltage supervision and brownout detection, ensuring reliable flash writes and state retention during grid dips. |
| USART0 with UART/SPI select | Supports isolated RS-485 communication (UART) or daisy-chained sensor interfaces (SPI), simplifying BOM for multi-node metering systems. |
Applications
| Single-Phase Electricity Meter | Digital Power Monitor |
|---|---|
Use Scenario: Residential or commercial kWh meter measuring line voltage and neutral current with anti-tampering features. IC Role / Device Role / Timing Role: Primary metrology MCU performing real-time 24-bit ADC sampling, RMS computation, tariff switching, and optical/RS-485 communication. Use Value: Dual SD24_A channels enable simultaneous voltage/current acquisition with <10 ppm linearity error, meeting IEC 62053-21 Class 0.5 accuracy requirements. |
Use Scenario: DIN-rail mounted panel meter displaying real-time kW, kVAR, PF, and THD for HVAC or lighting loads. IC Role / Device Role / Timing Role: Standalone measurement engine acquiring analog inputs, computing power quality metrics, and driving local LCD via GPIO. Use Value: Integrated hardware multiplier and 12-MHz DCO allow 50/60 Hz cycle-by-cycle analysis with <1% THD error at 50th harmonic. |
| Sensor Signal Conditioning | Industrial Energy Logger |
Use Scenario: Battery-powered clamp meter with isolated current sensing and Bluetooth LE reporting. IC Role / Device Role / Timing Role: Low-power acquisition node converting isolated analog signals into digital energy values before wireless transmission. Use Value: 0.1 µA LPM4 current extends battery life to >5 years; SD24_A's internal VCC sense enables self-calibration against supply drift. |
Use Scenario: Remote transformer monitoring unit logging voltage sag/swell events and harmonics over cellular network. IC Role / Device Role / Timing Role: Event-triggered data logger using SVS to detect grid anomalies and initiate high-speed ADC capture. Use Value: Programmable SVS threshold (1.8–3.6 V) allows precise detection of 10% voltage sags; 256 B RAM stores pre/post-event waveform buffers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar mixed-signal microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MSP430AFE232IPW | 8 KB flash, 512 B RAM, identical ADC/peripheral set and pinout | Better suited for firmware with larger metrology libraries or dual-protocol stacks (DLMS + Modbus) | Select when additional code space or RAM is required without changing PCB layout. |
| MSP430AFE221IPW | Single 24-bit SD24_A ADC, same package and core peripherals | Targeted at cost-sensitive single-input applications like voltage-only monitoring or tamper detection | Select when only one analog channel is needed and BOM cost reduction is prioritized. |
Compared with MSP430AFE222IPWR, MSP430AFE232IPW offers double flash/RAM for complex firmware while maintaining pin and functional compatibility; MSP430AFE221IPW reduces analog channel count to lower cost but sacrifices dual-signal acquisition capability essential for revenue-grade metering.
Availability
MSP430AFE222IPWR is available at Aetrix Electronics and suitable for single-phase electricity meters, digital power monitors, and industrial energy loggers requiring stable component supply across multi-year production cycles.
Supply support for MSP430AFE222IPWR 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 over 50 years of innovation in low-power design.
The MSP430AFE2xx product line is engineered specifically for high-accuracy metrology, integrating precision sigma-delta ADCs, ultra-low-power operation, and metrology-grade peripherals to replace discrete analog front-ends in utility-grade measurement systems.
FAQ
What is the maximum ADC sampling rate supported by MSP430AFE222IPWR?
The MSP430AFE222IPWR's SD24_A modules support up to 256 kSPS aggregate throughput across both channels, with configurable conversion times from 125 µs to 20 ms per sample. Each 24-bit conversion completes in ≤125 µs at 256 kSPS, enabling full-cycle 50/60 Hz waveform capture with oversampling for noise reduction. This rate is achievable under 3.3 V supply with internal reference enabled.
Does MSP430AFE222IPWR support external crystal oscillators?
Yes, MSP430AFE222IPWR supports external high-frequency crystals up to 16 MHz via P2.6/XT2IN and P2.7/XT2OUT pins. The crystal oscillator circuit includes programmable load capacitance and fault detection, allowing stable clocking for time-critical metrology functions. When used, the crystal drives MCLK directly or via divider, enabling precise 50/60 Hz synchronization without DCO calibration drift.
How many I/O pins does MSP430AFE222IPWR have, and what are their capabilities?
MSP430AFE222IPWR provides 11 programmable I/O pins (P1.0–P1.7, P2.0, P2.6, P2.7), each supporting interrupt, pullup/pulldown resistors, and multiple peripheral functions. Pins P1.0–P1.7 and P2.0 serve digital I/O, timer capture/compare, SPI/UART, and SD24_A bit-stream I/O. P2.6/P2.7 double as XT2 crystal terminals. All I/Os are Schmitt-triggered with 5 pF input capacitance and ±1000 V HBM ESD rating.
Can MSP430AFE222IPWR operate from a 1.8 V supply in active mode?
Yes, MSP430AFE222IPWR operates across 1.8 V to 3.6 V in active mode, with guaranteed performance at 1.8 V up to 4.15 MHz system clock. At 1.8 V, active current is 220 µA at 1 MHz DCO frequency, making it suitable for energy-harvesting or battery-backed designs where rail voltage may sag below 2.0 V during peak load.
Is MSP430AFE222IPWR pin-compatible with other devices in the AFE2xx family?
Yes, MSP430AFE222IPWR is fully pin-compatible with all 24-pin TSSOP variants in the MSP430AFE2xx family (e.g., MSP430AFE221IPW, MSP430AFE232IPW, MSP430AFE253IPW). Pin assignments for power, reset, debug, ADC inputs, and I/O are identical; only flash/RAM size and SD24_A channel count differ - enabling scalable design reuse across metering tiers.
MSP430AFE222IPWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 24-TSSOP (0.173", 4.40mm Width)
- Series:
- MSP430F2xx
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- MSP430 CPU16
- Core Size:
- 16-Bit
- Speed:
- 12MHz
- Connectivity:
- SPI, UART/USART
- Peripherals:
- Brown-out Detect/Reset, PWM, WDT
- Number of I/O:
- 11
- 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 2x24b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
MSP430AFE222IPWR FAQ
1.How can I place an order for MSP430AFE222IPWR through Aetrix?
Please submit a Request for Quotation (RFQ) for MSP430AFE222IPWR 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 MSP430AFE222IPWR reliable?
The price and inventory of MSP430AFE222IPWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MSP430AFE222IPWR is usually 5 days.
3.What payment methods are accepted for MSP430AFE222IPWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MSP430AFE222IPWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MSP430AFE222IPWR?
MSP430AFE222IPWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MSP430AFE222IPWR 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 MSP430AFE222IPWR?
For technical support, including MSP430AFE222IPWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MSP430AFE222IPWR requirements.
6.How does Aetrix verify that MSP430AFE222IPWR is sourced from the original manufacturer or authorized distributors?
All MSP430AFE222IPWR 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 MSP430AFE222IPWR meets industry standards.
7.What is the process for return or replacement of MSP430AFE222IPWR?
All MSP430AFE222IPWR units undergo pre-shipment inspection (PSI). If there is an issue with MSP430AFE222IPWR, 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 MSP430AFE222IPWR part is unused and in its original packaging.
Return procedure for MSP430AFE222IPWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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