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STMicroelectronics ST72F622L2M1TR
- Part No.:
- ST72F622L2M1TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 34-BSOP (0.295", 7.50mm Width)
- Datasheet:
-
ST72F622L2M1TR.pdf
- Description:
- IC MCU 8BIT 8KB FLASH 34SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,745
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Product details
Overview
ST72F622L2M1TR from STMicroelectronics is an 8-bit Flash-based microcontroller optimized for low-speed USB peripheral applications, featuring 8 KB dual-voltage Flash program memory, 384 bytes RAM (with 128-byte stack), integrated USB 2.0 interface with 3 endpoints and on-chip 3.3 V regulator, 10-bit ADC with up to 8 channels, and two 8-bit timers (ART and TBU). It operates from 4.0–5.5 V and supports industrial temperature range (0°C to +70°C) in LQFP44 package.
For engineers reviewing the ST72F622L2M1TR datasheet, ST72F622L2M1TR pinout, ST72F622L2M1TR application, or ST72F622L2M1TR equivalent, this device is selected for embedded USB human interface devices (HID), sensor interface modules with analog acquisition, and low-power industrial control nodes requiring in-application firmware updates and robust reset/LVD supervision.
Technical Context
The ST72F622L2M1TR implements a proprietary 8-bit ST7 core with 63 instructions, true bit manipulation, and 17 addressing modes-including 8×8 unsigned multiply-enabling compact, deterministic firmware for real-time USB polling and ADC sampling. Its USB subsystem integrates a Serial Interface Engine (SIE), DMA support, suspend/resume logic, and dedicated transceivers compliant with USB 2.0 low-speed (1.5 Mbps) specification.
Peripherals are tightly coupled via shared I/O ports: Port A provides 8 analog inputs (AIN0–AIN7) for the 10-bit ADC; Ports B and C deliver high-sink (8 mA @ 0.4 V) PWM outputs (PB6/PB7), input capture (PB4/PB5), ART clock (PB3), and SCI/SPI signals; USB pins (USBDP/USBDM/USBVCC) are dedicated and internally regulated to 3.3 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit ST7 CPU with 63 instructions, 17 addressing modes, and 8×8 unsigned multiply for compact real-time firmware |
| Program Memory | 8 KB dual-voltage Flash supporting In-Application Programming (IAP) and In-Circuit Programming (ICP) |
| RAM & Stack | 384 bytes RAM including 128-byte hardware stack (0100h–017Fh) for nested interrupt handling |
| USB Interface | Low-speed USB 2.0 compliant (1.5 Mbps) with integrated 3.3 V regulator, transceivers, and 3 endpoints (control + 2 bulk/interrupt) |
| Analog Peripheral | 10-bit ADC with up to 8 external input channels (AIN0–AIN7), programmable sampling rate and reference selection |
| Timers | 8-bit Auto-Reload Timer (ART) with 2 PWM outputs, 2 input captures, and external clock input; plus Time Base Unit (TBU) for periodic interrupts |
| Supply & Temp | 4.0–5.5 V operating supply; 0°C to +70°C industrial temperature range; includes Low Voltage Detector (LVD) and enhanced POR |
Pinout & Package
LQFP44 package (10 mm × 10 mm, 0.8 mm pitch), thermally enhanced with exposed pad; pin-compatible with ST7262xxx family variants in same footprint. Pin count and signal mapping validated per ST document ID 6996 Rev 5, Figures 2 and Table 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD / VSS | Digital power supply and ground | Primary digital domain reference; decoupling required at VDD/VSS pairs (pins 13/12, 38/34) |
| USBVCC / USBDP / USBDM | USB power and differential data | On-chip 3.3 V regulator output (USBVCC); full-duplex low-speed USB bus (1.5 Mbps) with internal termination |
| PA0–PA7 | Analog input / interrupt / USB control | 8-channel ADC inputs (AIN0–AIN7); PA0 doubles as USB Output Enable (USBOE) for pull-up control |
| PB0–PB7 | High-sink I/O with timer/SCI functions | 8 mA sink capability (HS); PB6/PB7 = ART PWM outputs; PB3 = ART clock; PB4/PB5 = input captures; PB1/PB2 = SCI I/O |
| PC0–PC7 | SPI/SCI/Interrupt multiplexed I/O | PC3–PC6 = SPI (SCK/MOSI/MISO/SS); PC2–PC5 = external interrupts IT9–IT12; PC0/PC1 = true open-drain outputs (8 mA @ 0.4 V) |
| PD0–PD6 | General-purpose bidirectional I/O | No analog or peripheral alternate functions; used for GPIO expansion or discrete control signaling |
| OSCIN / OSCOUT | External crystal oscillator interface | Supports 6 or 12 MHz crystal; internal RC options (8/4/2/1 MHz) available for reduced BOM cost |
| RESET | Active-low non-maskable reset | Hardware reset input with internal pull-up; triggers full system initialization and vector fetch from 0000h |
Key Features
| Feature | Design Value |
|---|---|
| In-Application Programming (IAP) | Enables field firmware updates without external programmer by executing code from RAM while reprogramming Flash sectors |
| Integrated USB 2.0 Low-Speed PHY | Eliminates need for external transceiver or level shifter; includes internal 3.3 V regulator, ESD protection, and suspend detection |
| 10-bit ADC with 8-channel mux | Supports simultaneous sampling of multiple sensors (e.g., temperature, voltage, current) with configurable conversion speed and reference source |
| Three power-saving modes (Wait/Halt/Slow) | Reduces active current to <10 µA in Halt mode with RTC or LVD wake-up; enables battery-powered HID or sensor node operation |
| Nested interrupt architecture | Allows prioritized servicing of up to 12 external interrupts across 3 vectors, critical for real-time USB token handling and ADC trigger synchronization |
Applications
| USB Human Interface Device (HID) | Industrial Sensor Node |
|---|---|
Use Scenario: Keypad, mouse, or custom control panel connecting to PC or embedded host via USB. IC Role / Device Role / Timing Role: Primary USB peripheral controller managing HID report descriptors, endpoint buffering, and button/analog scan timing. Use Value: Integrated USB PHY and 8 KB Flash enable standalone HID implementation with no external transceiver or EEPROM, reducing BoM cost and PCB area. | Use Scenario: Remote environmental monitor acquiring temperature, humidity, and supply voltage in factory automation. IC Role / Device Role / Timing Role: Analog front-end processor with 10-bit ADC sampling multiple sensors, performing local calibration, and transmitting data over USB. Use Value: Simultaneous 8-channel ADC input and low-power Halt mode allow periodic wake-up, measurement, and USB upload-extending battery life beyond 1 year. |
| Programmable Logic Controller (PLC) I/O Module | Legacy Equipment USB Adapter |
Use Scenario: DIN-rail mounted I/O expansion module adding digital input/output and analog monitoring to small PLC systems. IC Role / Device Role / Timing Role: Real-time I/O scheduler using ART PWM for LED status indication and TBU for cyclic diagnostics; USB handles configuration and data logging. Use Value: 31 multifunctional I/O lines (including 8 high-sink outputs) and hardware watchdog ensure deterministic response to fieldbus events and safe failover behavior. | Use Scenario: Retrofit adapter converting RS-232 or parallel port peripherals (e.g., lab instruments, printers) to USB connectivity. IC Role / Device Role / Timing Role: Protocol bridge translating legacy serial/parallel handshaking into USB CDC ACM or printer class descriptors. Use Value: SCI interface with configurable baud rates and USB endpoint flexibility (3 endpoints) support dual-interface bridging without external FIFO or glue logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit USB microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST72F324BJ2M1 | 16 KB Flash, 768 bytes RAM, same USB/ADC/timer peripherals but in PDIP42 package; lacks LQFP44 thermal performance | Better memory headroom for complex HID reports or larger protocol stacks; less suitable for space-constrained PCBs | Select when firmware size exceeds 8 KB or when through-hole assembly is required |
| STM8S105K4T6C | STM8 core (enhanced 8-bit), 16 KB Flash, 2 KB RAM, USB 2.0 FS (12 Mbps), no integrated USB regulator - requires external 3.3 V LDO | Higher bandwidth USB support and larger RAM enable more sophisticated device classes (e.g., USB audio, mass storage); increased BOM complexity | Select when full-speed USB or >1 KB RAM is mandatory; accept added external regulation and layout constraints |
Compared with ST72F622L2M1TR, ST72F324BJ2M1 offers double Flash/RAM in a legacy package, while STM8S105K4T6C delivers full-speed USB and modern toolchain support at the cost of external power management - making the ST72F622L2M1TR optimal for cost-sensitive, space-constrained low-speed USB peripherals with minimal external components.
Availability
ST72F622L2M1TR is available at Aetrix Electronics and suitable for USB HID development, industrial sensor interface design, and legacy equipment USB adaptation requiring stable component supply and long-term production continuity.
Supply support for ST72F622L2M1TR 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 ICs, sensors, and automotive semiconductors since 1987.
The ST7 microcontroller family targets cost-effective, low-power embedded control applications with integrated analog and communication peripherals - specifically engineered for USB-enabled industrial, consumer, and appliance control systems where Flash programmability and system-level integration reduce total solution cost.
FAQ
What USB speed and device class does ST72F622L2M1TR support?
The ST72F622L2M1TR supports only USB 2.0 low-speed (1.5 Mbps) operation with built-in transceivers and 3.3 V regulator. It implements standard USB device classes including HID, CDC ACM, and custom vendor-defined classes via its 3 configurable endpoints (control + 2 bulk/interrupt). Full-speed (12 Mbps) is not supported.
Does ST72F622L2M1TR require an external crystal for USB operation?
No - the ST72F622L2M1TR can operate USB in low-speed mode using its internal 4 MHz RC oscillator calibrated to ±1% accuracy, eliminating the need for an external crystal. An external 6 or 12 MHz crystal (via OSCIN/OSCOUT) is optional for higher precision timing or non-USB applications requiring tighter clock tolerance.
How is the 10-bit ADC referenced, and what analog inputs are available?
The 10-bit ADC uses either internal 2.5 V reference or external VDDA (analog supply) as reference voltage. Eight analog input channels (AIN0–AIN7) are mapped to PA0–PA7; all support single-ended acquisition with programmable sampling time and interrupt-on-conversion capability. No differential input mode is provided.
Can ST72F622L2M1TR perform firmware updates in the field without removing the chip?
Yes - the ST72F622L2M1TR supports In-Application Programming (IAP), allowing secure firmware updates over USB or SCI while the device remains powered and operational. Flash memory is divided into sectors that can be erased and rewritten independently under software control, enabling field upgrades without external programmers or JTAG interfaces.
ST72F622L2M1TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 34-BSOP (0.295", 7.50mm Width)
- Series:
- ST7
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ST7
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- SPI, USB
- Peripherals:
- DMA, LVD, POR, PWM, WDT
- Number of I/O:
- 23
- Program Memory Size:
- 8KB (8K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- -
- RAM Size:
- 384 x 8
- Voltage - Supply (Vcc/Vdd):
- 4V ~ 5.5V
- Data Converters:
- A/D 8x10b
- Oscillator Type:
- Internal
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ST72F622L2M1TR FAQ
1.How can I place an order for ST72F622L2M1TR through Aetrix?
Please submit a Request for Quotation (RFQ) for ST72F622L2M1TR 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 ST72F622L2M1TR reliable?
The price and inventory of ST72F622L2M1TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST72F622L2M1TR is usually 5 days.
3.What payment methods are accepted for ST72F622L2M1TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST72F622L2M1TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST72F622L2M1TR?
ST72F622L2M1TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST72F622L2M1TR 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 ST72F622L2M1TR?
For technical support, including ST72F622L2M1TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST72F622L2M1TR requirements.
6.How does Aetrix verify that ST72F622L2M1TR is sourced from the original manufacturer or authorized distributors?
All ST72F622L2M1TR 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 ST72F622L2M1TR meets industry standards.
7.What is the process for return or replacement of ST72F622L2M1TR?
All ST72F622L2M1TR units undergo pre-shipment inspection (PSI). If there is an issue with ST72F622L2M1TR, 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 ST72F622L2M1TR part is unused and in its original packaging.
Return procedure for ST72F622L2M1TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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