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STMicroelectronics ST62T03CM6
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- Part No.:
- ST62T03CM6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
ST62T03CM6.pdf
- Description:
- IC MCU 8BIT 1KB OTP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,508
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Product details
Overview
ST62T03CM6 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, supports crystal/RC clock sources, and targets embedded control in automotive body electronics, appliance motor control, and industrial sensor interfaces.
For engineers reviewing the ST62T03CM6 datasheet, ST62T03CM6 pinout, ST62T03CM6 application, or ST62T03CM6 equivalent, key selection considerations include its 16-pin SOIC package, 8MHz max clock, -40°C to +125°C operating range, high-sink I/O capability (20mA), and OTP programmability for production firmware locking.
Technical Context
The ST62T03CM6 implements a Harvard-architecture 8-bit CPU core with 40 instructions and 9 addressing modes. Its on-chip peripherals include a configurable watchdog timer, an 8-bit timer/counter with 7-bit prescaler, and an 8-bit successive-approximation ADC with four analog input channels mapped to PA1–PA3 and PB0.
Power management features include Wait and Stop low-power modes, enhanced reset logic with LVD-triggered safe reset, and Oscillator Safeguard (OSG) that detects main clock failure and forces fallback to backup LFAO. Clock sources include external crystal (up to 8MHz), RC network, or external clock signal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core Architecture | 8-bit ST6 Harvard architecture with 40 instructions and 9 addressing modes |
| Program Memory | 1KB OTP ROM - non-erasable, production-ready firmware storage with read-out protection |
| RAM Size | 64 bytes - sufficient for small real-time control stacks and data buffers |
| ADC Resolution | 8-bit SAR ADC - supports 4 analog inputs (PA1–PA3, PB0) for sensor monitoring |
| Max Clock Frequency | 8 MHz - enables deterministic timing for motor commutation or PWM generation |
| Supply Voltage Range | 3.0 V to 6.0 V - compatible with 5V industrial buses and automotive battery transients |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive and factory-floor industrial use |
| I/O Sink Current | 20 mA per pin (3 pins) - directly drives LEDs, relays, or small solenoids without external drivers |
Pinout & Package
ST62T03CM6 is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package, compliant with JEDEC MS-012AA, 1.27 mm pitch, and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | Primary 3.0–6.0 V supply rail for core and I/O |
| VSS | Ground | Digital ground reference for all internal circuitry |
| OSCIN | Crystal/resonator input | Connects to one terminal of external crystal or ceramic resonator |
| OSCOUT | Crystal/resonator output | Drives second terminal of external timing component |
| RESET | Active-low reset input | Asynchronous reset with internal pull-up; triggers safe initialization sequence |
| NMI | Non-maskable interrupt | Edge-triggered emergency interrupt for critical fault handling |
| PA0–PA3 | Port A bidirectional I/O | PA1–PA3 support analog input (ADC); PA0 is digital-only I/O |
| PB0–PB7 | Port B bidirectional I/O | PB0 supports analog input; PB3, PB5–PB7 are high-sink outputs (20 mA) |
Key Features
| Feature | Design Value |
|---|---|
| Oscillator Safeguard (OSG) | Detects main clock failure and automatically switches to low-frequency auxiliary oscillator (LFAO) to maintain safe operation |
| Low Voltage Detector (LVD) | Monitors VDD and asserts reset before supply drops below safe operating threshold - prevents code corruption |
| High-Sink I/O Outputs | Three dedicated 20 mA sink outputs (PB3, PB5–PB7) eliminate need for external driver transistors in LED/relay control |
| Two Independent Timers | Configurable watchdog timer + 8-bit timer/counter with 7-bit prescaler - supports PWM, event counting, and timeout supervision |
| Integrated 8-bit ADC | Four-channel analog-to-digital converter with software-selectable input mapping - enables direct sensor interface without external ADC |
Applications
| Automotive Body Control | Home Appliance Motor Interface |
|---|---|
|
Use Scenario: Centralized control of door locks, window lifts, and interior lighting in entry-level vehicles. IC Role / Device Role / Timing Role: Main system controller executing state machines, reading switch inputs, driving actuators via high-sink I/O, and monitoring battery voltage with LVD. Use Value: Single-chip solution reduces BOM count; 125°C rating ensures reliability near engine compartments; OTP prevents unauthorized firmware modification. |
Use Scenario: Speed and direction control of universal motors in washing machines and vacuum cleaners. IC Role / Device Role / Timing Role: Generates phase-controlled AC drive signals using timer-based PWM; reads zero-cross detection and thermal sensor inputs via ADC. Use Value: On-chip 8-bit ADC eliminates external sensing IC; 20 mA sink outputs directly drive TRIAC gate drivers; wide supply range accommodates line-voltage fluctuations. |
| Industrial Sensor Node | Smart Power Outlet Monitoring |
|
Use Scenario: Low-cost environmental sensor node measuring temperature, humidity, and ambient light in factory settings. IC Role / Device Role / Timing Role: ADC digitizes analog sensor outputs; timers manage sampling intervals; low-power Stop mode extends battery life in wireless variants. Use Value: Integrated ADC and LVD enable autonomous operation during brownouts; -40°C to +125°C range supports deployment in unconditioned industrial enclosures. |
Use Scenario: Energy-monitoring smart outlet with current/voltage sensing and relay control. IC Role / Device Role / Timing Role: Reads shunt-based current sense and resistive divider voltage via ADC; controls mechanical relay through high-sink PB pins; uses watchdog timer for fail-safe power cutoff. Use Value: 20 mA sink capability directly energizes relay coils rated ≤200 mW; OSG ensures continued operation if mains-derived clock fails; OTP secures calibration constants. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST62T00CM6 | 1KB OTP, identical pinout and peripheral set, but lacks ADC functionality | Suitable only where analog sensing is unnecessary - e.g., pure digital I/O control | Select when cost reduction is critical and ADC is unused; no firmware porting required |
| ST62T20CM6 | 2KB OTP, same peripherals and package, higher memory density | Required for larger firmware images - e.g., bootloader + application, or expanded feature sets | Choose when >1KB code space needed; drop-in replacement with full backward compatibility |
Compared with ST62T00CM6, ST62T03CM6 adds essential ADC capability for sensor integration; compared with ST62T20CM6, it trades memory capacity for lower unit cost while retaining all analog and timing functions needed for compact control tasks.
Availability
ST62T03CM6 is available at Aetrix Electronics and suitable for automotive body electronics, home appliance motor control, and industrial sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ST62T03CM6 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 management ICs, sensors, and automotive-grade components.
The ST62xx family was engineered for cost-sensitive, resource-constrained embedded control applications - emphasizing OTP programmability, robust reset/supply monitoring, and integrated analog peripherals to minimize external components in automotive, appliance, and industrial designs.
FAQ
What programming method does ST62T03CM6 support?
ST62T03CM6 uses One-Time Programmable (OTP) ROM. Programming occurs once during manufacturing using standard ST62 development tools and a dedicated programmer (e.g., STVP). No field reprogramming is possible - this ensures firmware integrity and prevents unauthorized updates in production units.
Does ST62T03CM6 include a hardware UART or SPI interface?
No. The ST62T03CM6 does not integrate a hardware UART, SPI, or I²C peripheral. Serial communication must be implemented in firmware using bit-banged GPIO, leveraging its 9 I/O lines and precise timer control for baud rate generation and signal timing.
How is the ADC configured and triggered?
The 8-bit ADC has four selectable input channels (PA1–PA3, PB0). Conversion is software-triggered via control register write; result is read from a dedicated data register. No automatic scan or DMA is supported - each conversion requires explicit initiation and polling or interrupt-driven completion handling.
Can ST62T03CM6 operate from a 3.3V supply?
Yes. ST62T03CM6 supports 3.0V to 6.0V operation, making it fully compatible with 3.3V systems. At 3.3V, maximum clock frequency is reduced to approximately 4.5MHz (per electrical characteristics in Section 10.5), and I/O sink current remains rated at 20mA per specified pin.
ST62T03CM6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Series:
- ST6
- Packaging:
- Tray
- 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 FAQ
1.How can I place an order for ST62T03CM6 through Aetrix?
Please submit a Request for Quotation (RFQ) for ST62T03CM6 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 reliable?
The price and inventory of ST62T03CM6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ST62T03CM6 is usually 5 days.
3.What payment methods are accepted for ST62T03CM6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ST62T03CM6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ST62T03CM6?
ST62T03CM6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ST62T03CM6 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?
For technical support, including ST62T03CM6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ST62T03CM6 requirements.
6.How does Aetrix verify that ST62T03CM6 is sourced from the original manufacturer or authorized distributors?
All ST62T03CM6 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 meets industry standards.
7.What is the process for return or replacement of ST62T03CM6?
All ST62T03CM6 units undergo pre-shipment inspection (PSI). If there is an issue with ST62T03CM6, 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 part is unused and in its original packaging.
Return procedure for ST62T03CM6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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