ST6209C

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ST6209C 8-Bit Microcontroller Technical Summary

Overview

The ST6209C is a member of the ST62xx family of 8-bit HCMOS microcontrollers, designed for low-to-medium complexity embedded applications. It features an optimized architecture for cost-sensitive designs while maintaining robust performance for industrial, automotive, and consumer applications. The device integrates a CPU core, memory, and multiple peripherals into a single chip, making it suitable for compact and power-efficient designs.

Key Features

• 8-Bit ST6 Core: Efficient Harvard architecture with 6 CPU registers for streamlined processing.
• Memory:
  • Program Memory: Up to 8KB of EPROM with readout protection.
  • Data Space: 256 bytes of RAM.
  • Stack Space: 6-level hardware stack.
• Clock System:
  • Main oscillator configurable for RC, crystal, or external clock input.
  • Low-Frequency Auxiliary Oscillator (LFAO) for power-saving modes.
  • Oscillator Safe Guard for fault detection.
• Power Management:
  • WAIT and STOP modes for reduced power consumption.
  • Low-Voltage Detection (LVD) for safe operation.
• On-Chip Peripherals:
  • Multi-functional I/O ports with programmable direction and modes.
  • 8-bit Timer with interrupt capability.
  • Analog-to-Digital Converter (ADC) for sensor interfacing.
• Robust Reset Options:
  • Power-on Reset (POR).
  • Watchdog Reset.
  • External RESET pin.
• Interrupt Handling: Multiple interrupt sources with configurable priority.

Applications

The ST6209C is ideal for a wide range of embedded applications, including:

• Consumer electronics (remote controls, small appliances).
• Automotive systems (sensor interfaces, lighting control).
• Industrial control (motor drivers, simple automation).
• Home automation (thermostats, security devices).
• Battery-powered devices due to low-power modes.

Electrical Characteristics

Absolute Maximum Ratings

• Supply Voltage (V_DD): -0.3V to +7.0V
• Input Voltage (V_IN): -0.3V to V_DD + 0.3V
• Operating Temperature: -40°C to +85°C (industrial grade)
• Storage Temperature: -65°C to +150°C

Recommended Operating Conditions

• Supply Voltage (V_DD): 3.0V to 5.5V
• Clock Frequency: 0 to 8MHz (crystal) / 0 to 4MHz (RC)
• I/O Pin Current: ±10mA per pin (max)

DC Characteristics

• Input High Voltage (V_IH): 0.7V_DD (min)
• Input Low Voltage (V_IL): 0.3V_DD (max)
• Output High Voltage (V_OH): V_DD - 0.5V (min at 2mA)
• Output Low Voltage (V_OL): 0.4V (max at 2mA)
• Power Consumption (Active Mode): 5mA typical at 4MHz, 5V
• Power Consumption (STOP Mode): <10µA

AC Characteristics

• Instruction Cycle Time: 1µs at 4MHz
• Reset Pulse Width: 10µs (min)
• Interrupt Response Time: 4 clock cycles

ADC Characteristics

• Resolution: 8-bit
• Conversion Time: 20µs (typical)
• Input Voltage Range: 0V to V_DD

Package Information

The ST6209C is available in multiple package options, including:

• 20-pin PDIP (Plastic Dual In-Line Package):
  • Dimensions: 26.2mm x 6.35mm
  • Pin Pitch: 2.54mm
• 20-pin SOIC (Small Outline Integrated Circuit):
  • Dimensions: 12.8mm x 7.5mm
  • Pin Pitch: 1.27mm

Development Support

The ST6209C is supported by STMicroelectronics' development tools, including:

• ST6 Assembler and C Compiler.
• In-Circuit Emulators (ICE) for debugging.
• Programmer hardware for EPROM devices.

Conclusion

The ST6209C is a versatile 8-bit microcontroller offering a balance of performance, power efficiency, and integration. Its rich peripheral set and robust architecture make it suitable for a variety of embedded control applications. With industrial-grade temperature support and multiple package options, it provides flexibility for diverse design requirements.

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