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STMicroelectronics ST72F324J6TC/TR
- Part No.:
- ST72F324J6TC/TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 44-LQFP
- Datasheet:
-
ST72F324J6TC/TR.pdf
- Description:
- IC MCU 8BIT 32KB FLASH 44LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,418
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Product details
Overview
ST72F324J6TC/TR from STMicroelectronics is an 8-bit Flash microcontroller featuring 32 KB HD-Flash memory, 1024 bytes RAM, 10-bit ADC with up to 12 input channels, four timers (including RTC and beeper), SPI and SCI serial interfaces, and programmable low-voltage detection - deployed in industrial motor control and sensor interface modules requiring deterministic real-time response.
For engineers reviewing the ST72F324J6TC/TR datasheet, ST72F324J6TC/TR pinout, ST72F324J6TC/TR application, or ST72F324J6TC/TR equivalent, this MCU supports in-application programming (IAP), dual-oscillator clock management with PLL-based 2× frequency multiplication, and four power-saving modes (Halt, Active-Halt, Wait, Slow) for embedded systems operating across −40°C to +125°C.
Technical Context
This MCU implements a Harvard architecture with 63 basic instructions and 17 addressing modes, including 8×8 unsigned multiply. Its nested interrupt controller supports 10 vectors plus TRAP and RESET, with up to 9 external interrupt lines mapped across 4 vectors.
The on-chip peripherals include a Main Clock Controller (MCC) with real-time base, beep generator, and clock-out capability; two 16-bit timers (Timer A and Timer B) supporting PWM, input capture, and pulse generation; and a configurable watchdog timer with hardware option and WDGHALT mode integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit ST7 CPU with Harvard bus, 63 instructions, 17 addressing modes |
| Flash Memory | 32 KB HD-Flash with read-out protection, 100 write/erase cycles, 20-year data retention at 55°C |
| RAM | 1024 bytes (256-byte stack), volatile storage for variables and runtime context |
| ADC Resolution & Inputs | 10-bit successive approximation ADC with up to 12 robust analog input ports |
| Timers | Four timers: MCC/RTC (real-time base + beeper), configurable WDG, 16-bit Timer A (1 IC/1 OC), 16-bit Timer B (2 IC/2 OC) |
| Communication | SPI synchronous interface and SCI asynchronous serial interface (UART-like) |
| Supply Range | 3.8 V to 5.5 V operation, with enhanced LVD and auxiliary voltage detector (AVD) with interrupt |
| Temperature Range | −40°C to +125°C industrial grade, qualified for harsh ambient conditions |
Pinout & Package
TQFP44 (10 × 10 mm, 0.8 mm pitch) package with 44 leads; lead-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual-supply pins for core and I/O domains; decoupling required per layout guidelines |
| OSCIN, OSCOUT | Crystal/resonator interface | Connects to external 1–8 MHz crystal or ceramic resonator for main clock source |
| RESET | Asynchronous reset input | Active-low, Schmitt-triggered input enabling hardware-initiated system restart |
| PA0–PA7, PB0–PB7, PC0–PC7, PD0–PD7, PE0–PE3 | Multi-function I/O ports | 32 bidirectional I/O lines; up to 22 support alternate functions (SPI, SCI, timer signals) |
| ICPCLK, ICCDAT | In-circuit programming interface | Serial programming pins used during ICP (In-Circuit Programming) via ST's standard protocol |
| AVDIN | Auxiliary voltage monitor input | Monitors secondary supply rail; triggers interrupt on threshold violation |
Key Features
| Feature | Design Value |
|---|---|
| In-Application Programming (IAP) | Enables firmware updates over SCI or SPI without external programmer, preserving RAM contents |
| Programmable Low-Voltage Detection (LVD) | Configurable reset thresholds (e.g., 4.0 V, 3.8 V) with interrupt capability for graceful brown-out handling |
| Real-Time Clock & Beeper (MCC/RTC) | Integrated RTC with calendar/timekeeping and programmable tone generator for audible alerts |
| High-Sink I/O Capability | 12 pins rated for 20 mA sink current - suitable for direct LED driving or relay coil interfacing |
| Four Power-Saving Modes | Halt (CPU off, peripherals active), Active-Halt (CPU off, selected peripherals running), Wait (clock gated), Slow (reduced internal clock) |
Applications
| Industrial Motor Control | Smart Sensor Interface Module |
|---|---|
Use Scenario: Closed-loop speed regulation of 3-phase BLDC motors in HVAC blowers using hall-effect feedback. IC Role / Device Role / Timing Role: Central controller executing commutation logic, ADC sampling of current/voltage, and PWM generation via Timer A/B. Use Value: Deterministic 100 µs interrupt latency enables precise 20 kHz PWM timing; 12 high-sink outputs drive gate drivers directly. |
Use Scenario: Multi-sensor node aggregating temperature, humidity, and pressure data for predictive maintenance in factory automation. IC Role / Device Role / Timing Role: Sensor hub managing I²C/SPI sensors, performing local calibration, and transmitting fused data via SCI UART to PLC. Use Value: Integrated 10-bit ADC with 12-channel multiplexing eliminates external signal conditioning; AVD monitors backup battery voltage. |
| Energy Meter Front-End | Automotive Body Control Unit (BCU) |
Use Scenario: Residential electricity meter measuring line voltage/current via shunt/CT and computing kWh using RMS algorithms. IC Role / Device Role / Timing Role: Real-time acquisition engine synchronizing ADC sampling to zero-crossing detection via external interrupt. Use Value: 10-bit ADC with robust noise immunity meets IEC 62053 accuracy requirements; flash endurance supports 10+ year field life. |
Use Scenario: Door module controlling window lift, mirror adjustment, and interior lighting in entry-level vehicles. IC Role / Device Role / Timing Role: Local ECU executing LIN slave protocol, debouncing mechanical switches, and driving LEDs/relays. Use Value: −40°C to +125°C rating ensures operation under hood/door cavity extremes; Halt mode reduces quiescent current to <1 µA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST72F324B6T6 | Successor part with improved ESD performance (4 kV HBM), updated flash algorithm, and extended debug interface | Qualified for new designs per ST's "not for new design" notice on ST72F324Jx series | Select for production ramp where long-term availability and enhanced reliability are mandatory |
| STM8S105K4T6C | 32 MHz STM8 core, 16 KB Flash, integrated EEPROM, higher interrupt priority granularity, and enhanced ADC (10-bit, 16 ch) | Offers superior code density, faster execution, and richer peripheral set - but requires toolchain migration | Choose when upgrading legacy ST7 platforms with minimal PCB change (same TQFP44 footprint) |
Compared with ST72F324J6TC/TR, ST72F324B6T6 provides lifecycle assurance and marginally better robustness, while STM8S105K4T6C delivers significantly higher performance and modern toolchain support - both retain compatibility with existing ST7-based firmware architecture at source level.
Availability
ST72F324J6TC/TR is available at Aetrix Electronics and suitable for industrial motor control, smart sensor interface modules, energy meter front-ends, and automotive body control units requiring stable component supply across extended temperature ranges.
Supply support for ST72F324J6TC/TR 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.
The ST7 family was engineered for cost-sensitive, real-time embedded applications demanding high I/O count, mixed-signal integration, and robust operation in electrically noisy environments - particularly targeting industrial controls and appliance electronics.
FAQ
Is ST72F324J6TC/TR still recommended for new designs?
No - STMicroelectronics explicitly marks this device as "NOT FOR NEW DESIGN" in its official documentation. The ST72F324Bx series and STM8S family are designated successors. While ST72F324J6TC/TR remains available for legacy support and existing production, new projects should adopt ST72F324B6T6 or STM8S105K4T6C to ensure long-term supply and technical support.
What programming interfaces does ST72F324J6TC/TR support?
It supports In-Circuit Programming (ICP) via dedicated ICPCLK/ICCDAT pins using ST's standard serial protocol, and In-Application Programming (IAP) over SCI or SPI interfaces. No JTAG port is present; debugging relies on ST's STVP software and compatible programmers like ST-LINK/V2 with adapter.
Does ST72F324J6TC/TR include hardware EEPROM?
No - it does not integrate dedicated EEPROM memory. However, the HD-Flash supports wear leveling and sector protection, and ST provides IAP routines enabling emulation of EEPROM functionality in designated Flash sectors for parameter storage with controlled erase/write cycles.
Can the 10-bit ADC operate during low-power modes?
Yes - the ADC can perform conversions in Wait and Active-Halt modes when clocked from the internal RC oscillator or prescaled main clock. It is disabled in Halt and Slow modes unless explicitly re-enabled post-wakeup; conversion results trigger interrupts usable for wake-up event detection.
ST72F324J6TC/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 44-LQFP
- Series:
- ST7
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ST7
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- SCI, SPI
- Peripherals:
- LVD, POR, PWM, WDT
- Number of I/O:
- 32
- Program Memory Size:
- 32KB (32K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 1K x 8
- Voltage - Supply (Vcc/Vdd):
- 3.8V ~ 5.5V
- Data Converters:
- A/D 12x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ST72F324J6TC/TR FAQ
1.How can I place an order for ST72F324J6TC/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for ST72F324J6TC/TR 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 ST72F324J6TC/TR reliable?
The price and inventory of ST72F324J6TC/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST72F324J6TC/TR is usually 5 days.
3.What payment methods are accepted for ST72F324J6TC/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST72F324J6TC/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST72F324J6TC/TR?
ST72F324J6TC/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST72F324J6TC/TR 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 ST72F324J6TC/TR?
For technical support, including ST72F324J6TC/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST72F324J6TC/TR requirements.
6.How does Aetrix verify that ST72F324J6TC/TR is sourced from the original manufacturer or authorized distributors?
All ST72F324J6TC/TR 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 ST72F324J6TC/TR meets industry standards.
7.What is the process for return or replacement of ST72F324J6TC/TR?
All ST72F324J6TC/TR units undergo pre-shipment inspection (PSI). If there is an issue with ST72F324J6TC/TR, 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 ST72F324J6TC/TR part is unused and in its original packaging.
Return procedure for ST72F324J6TC/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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