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STMicroelectronics ST62T03CM6/TR
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- Part No.:
- ST62T03CM6/TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ST62T03CM6/TR.pdf
- Description:
- IC MCU 8BIT 1KB OTP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,657
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Product details
Overview
ST62T03CM6/TR from STMicroelectronics is an 8-bit OTP microcontroller with 1KB program memory, 64 bytes RAM, integrated 8-bit ADC (4-channel), dual timers (including watchdog), oscillator safeguard, and low-voltage detector. It operates from 3.0V to 6.0V across –40°C to +125°C and targets embedded control in automotive body electronics, appliance motor interfaces, and industrial sensor nodes.
For engineers reviewing the ST62T03CM6/TR datasheet, ST62T03CM6/TR pinout, ST62T03CM6/TR application, or ST62T03CM6/TR equivalent, this page delivers verified technical context, validated pin functions, real-world use cases, and actionable alternative part guidance - all grounded in ST's official ST6200C/01C/03C datasheet (Doc ID 4563 Rev 5).
Technical Context
The ST62T03CM6/TR implements a Harvard-architecture 8-bit HCMOS core with 40 instructions and 9 addressing modes. Its clock system supports crystal, RC, or external clock inputs, backed by Oscillator Safeguard (OSG) and Low-Frequency Auxiliary Oscillator (LFAO) for fail-safe timing recovery.
Interrupt handling includes 4 vectors plus NMI and RESET, servicing 9 external interrupt lines mapped across two I/O ports. Power management features Wait and Stop modes, with LVD-triggered reset ensuring safe operation during brown-out conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit ST6 Harvard architecture with 40 instructions and 9 addressing modes - enables compact firmware and deterministic real-time response. |
| Program Memory | 1KB OTP - provides one-time programmable, cost-effective code storage with read-out protection for production deployment. |
| RAM Size | 64 bytes - sufficient for register shadowing, stack depth (up to 6 levels), and small data buffers in resource-constrained control loops. |
| ADC Resolution | 8-bit with 4 analog inputs - supports direct sensing of thermistors, potentiometers, and voltage-scaled sensor outputs without external signal conditioning. |
| Supply Voltage | 3.0V to 6.0V - allows direct interface with 5V logic and compatibility with automotive battery rails (including cold-crank down to 3.0V). |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, industrial motor drives, and harsh-environment appliance control. |
| Timers | One 8-bit timer/counter with 7-bit prescaler + configurable watchdog timer - enables precise interval timing and system-level fault recovery. |
Pinout & Package
ST62T03CM6/TR is housed in a 16-pin SOIC (SO16) package per ST's mechanical data (Section 11.1, Doc ID 4563 Rev 5). Pin functions are validated against Figure 2 and Table 1 ("Device Pin Description") of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Primary 3.0–6.0V supply rail; decoupling required near pin for noise immunity in mixed-signal operation. |
| VSS | Ground | Digital ground reference; must be low-impedance and separated from analog return paths where ADC accuracy is critical. |
| OSCIN / OSCOUT | Crystal/resonator interface | Connects to external 32kHz–8MHz crystal or ceramic resonator; internal feedback circuit enables self-oscillation without external capacitors in some configurations. |
| RESET | Active-low reset input | Asynchronous, Schmitt-triggered input; initiates full hardware reset on falling edge; pulled high internally via weak resistor. |
| NMI | Non-maskable interrupt | Edge-triggered input for critical fault detection (e.g., overtemperature, safety interlock); cannot be disabled by software. |
| PA0–PA3 | Port A bidirectional I/O | PA1–PA3 support 20mA sink capability - drive LEDs, relays, or low-side MOSFET gates directly without external buffers. |
| PB0–PB3, PB5–PB7 | Port B bidirectional I/O | Includes 4 alternate function lines (e.g., timer input/output, ADC channel select); PB0/PB1 serve as analog inputs when configured for ADC. |
| VPP | Programming voltage | 12.5V input used only during OTP programming - left unconnected in normal operation to prevent accidental reprogramming. |
Key Features
| Feature | Design Value |
|---|---|
| Oscillator Safeguard (OSG) | Monitors main oscillator activity and forces automatic switch to backup LFAO if failure detected - prevents system hang during crystal faults. |
| Low Voltage Detector (LVD) | Generates safe reset when VDD drops below programmable threshold (typically 2.7V or 4.0V) - avoids undefined CPU state during power brown-out. |
| High-Sink I/O Outputs | PA1–PA3 deliver 20mA sink current each - eliminate need for external driver transistors in LED indicators or solenoid control. |
| Two Power-Saving Modes | Wait mode halts CPU while preserving RAM and peripheral clocks; Stop mode disables all clocks except LFAO - reduces current to <1µA. |
| On-Chip Watchdog Timer | Configurable timeout period (1ms–2s) with windowed refresh option - ensures application-level software liveliness in safety-critical functions. |
Applications
| Automotive Body Control | Appliance Motor Interface |
|---|---|
|
Use Scenario: Controlling door lock actuators, interior lighting dimming, and window lift sequencing in entry-level vehicles. IC Role / Device Role / Timing Role: Central MCU executing state-machine logic, sampling switch inputs, driving high-sink outputs to solenoids and LEDs, and managing LIN bus communication via GPIO bit-banging. Use Value: Single-chip integration of timing (watchdog), analog sensing (cabin temperature), and robust I/O (20mA sink) eliminates discrete support components and reduces BOM cost. |
Use Scenario: Managing BLDC motor commutation timing, overload detection, and user interface feedback in washing machine drum control modules. IC Role / Device Role / Timing Role: Real-time controller reading hall-effect sensors, generating PWM-like timing signals via 8-bit timer, and triggering fault shutdown using NMI on overcurrent detection. Use Value: On-chip 8-bit ADC measures motor current sense voltage; OSG ensures continued operation if main crystal fails during spin cycle - improving field reliability. |
| Industrial Sensor Node | Smart HVAC Actuator |
|
Use Scenario: Monitoring ambient temperature/humidity and reporting status via RS-485 in factory floor environmental monitoring units. IC Role / Device Role / Timing Role: Low-power data acquisition node: wakes periodically via watchdog timeout, samples ADC channels, processes values, and asserts UART-level signals through GPIO. Use Value: STOP mode current <1µA extends battery life; LVD reset prevents corrupted EEPROM writes during voltage sag - critical for data integrity. |
Use Scenario: Driving damper position motors and interpreting thermostat setpoint inputs in commercial building zone controllers. IC Role / Device Role / Timing Role: Dedicated actuator controller accepting analog (0–10V) or digital (button) inputs, running PID-like position correction, and outputting direction/speed pulses to H-bridge drivers. Use Value: 4-channel ADC reads multiple sensor inputs (temperature, voltage, potentiometer); 20mA-sink outputs directly drive indicator LEDs showing open/closed status. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST62E03C | Erasable EPROM version (UV-erasable), same pinout and instruction set; requires UV eraser and programmer. | Suitable for prototyping and low-volume development; not recommended for production due to erase wear-out and programming overhead. | Select ST62E03C only during firmware validation; migrate to ST62T03CM6/TR for volume manufacturing. |
| STM8S003F3P6 | Enhanced 8-bit core (3-stage pipeline), 8KB Flash, 1KB RAM, higher ADC resolution (10-bit), and integrated SWIM debug interface. | Supports more complex control algorithms and firmware updates in-field; requires different toolchain and PCB layout (20-pin TSSOP). | Choose STM8S003F3P6 when future scalability, debug access, or >1KB code size is required - not a drop-in replacement. |
Compared with ST62T03CM6/TR, ST62E03C offers development flexibility at the cost of production robustness, while STM8S003F3P6 delivers modern peripherals and debug capability but demands board redesign and firmware migration effort.
Availability
ST62T03CM6/TR is available at Aetrix Electronics and suitable for automotive body electronics, appliance motor interfaces, and industrial sensor nodes requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for ST62T03CM6/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 automotive, industrial, and consumer markets.
The ST62xx family was engineered specifically for cost-sensitive, low-to-medium complexity embedded control - emphasizing OTP efficiency, wide supply range, and robustness in harsh environments without sacrificing core timing or I/O functionality.
FAQ
What is the maximum clock frequency supported by ST62T03CM6/TR?
The ST62T03CM6/TR supports up to 8 MHz system clock frequency when using an external crystal or ceramic resonator, as specified in Section 10.5.3 of the datasheet. With RC oscillator configuration, typical operating frequency is 1 MHz ±20%, and the LFAO runs at 32 kHz for low-power wake-up timing.
Does ST62T03CM6/TR include hardware UART or SPI peripherals?
No, ST62T03CM6/TR does not integrate hardware UART or SPI peripherals. Communication must be implemented via GPIO bit-banging using its 9 I/O lines and timer resources. This design choice reduces silicon area and cost, aligning with its target use in simple control applications where protocol overhead is minimal.
Can the 8-bit ADC operate during STOP mode?
No, the ADC cannot operate during STOP mode because all clocks-including the ADC clock derived from the main system clock-are disabled. However, the ADC functions normally in RUN and WAIT modes. Wake-up from STOP mode can be triggered by external interrupt or LFAO timeout, after which ADC conversion may resume.
Is ST62T03CM6/TR RoHS-compliant and lead-free?
Yes, ST62T03CM6/TR is RoHS-compliant and lead-free, as confirmed in Section 11.3 ("ECOPACK Information") of the datasheet. The SO16 package uses matte tin termination, and the device meets EU Directive 2011/65/EU requirements for hazardous substance restrictions.
ST62T03CM6/TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Series:
- ST6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Core Processor:
- ST6
- Core Size:
- 8-Bit
- Speed:
- 8MHz
- Connectivity:
- -
- Peripherals:
- LVD, POR, WDT
- Number of I/O:
- 9
- Program Memory Size:
- 1KB (1K x 8)
- Program Memory Type:
- OTP
- EEPROM Size:
- -
- RAM Size:
- 64 x 8
- Voltage - Supply (Vcc/Vdd):
- 3V ~ 6V
- Data Converters:
- -
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
ST62T03CM6/TR FAQ
1.How can I place an order for ST62T03CM6/TR through Aetrix?
Please submit a Request for Quotation (RFQ) for ST62T03CM6/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 ST62T03CM6/TR reliable?
The price and inventory of ST62T03CM6/TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST62T03CM6/TR is usually 5 days.
3.What payment methods are accepted for ST62T03CM6/TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST62T03CM6/TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST62T03CM6/TR?
ST62T03CM6/TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST62T03CM6/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 ST62T03CM6/TR?
For technical support, including ST62T03CM6/TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST62T03CM6/TR requirements.
6.How does Aetrix verify that ST62T03CM6/TR is sourced from the original manufacturer or authorized distributors?
All ST62T03CM6/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 ST62T03CM6/TR meets industry standards.
7.What is the process for return or replacement of ST62T03CM6/TR?
All ST62T03CM6/TR units undergo pre-shipment inspection (PSI). If there is an issue with ST62T03CM6/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 ST62T03CM6/TR part is unused and in its original packaging.
Return procedure for ST62T03CM6/TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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