ST6208C

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ST6208C 8-Bit Microcontroller Technical Summary

Overview

The ST6208C is a low-cost, high-performance 8-bit microcontroller from the ST62xx HCMOS family, designed for low-to-medium complexity embedded applications. It features an optimized architecture with integrated peripherals, making it suitable for industrial control, consumer electronics, and automotive systems. The microcontroller combines EPROM-based program memory, versatile I/O capabilities, and power-saving modes to deliver efficient performance in cost-sensitive designs.

Key Features

• 8-Bit ST6 Core: Efficient Harvard architecture with 6 CPU registers
• Memory:
  • Program Memory: EPROM (size varies by variant)
  • Data Space: 128 bytes RAM
  • Stack Space: 6-level hardware stack
  • Data Window Register (DWR) for memory expansion
• Clock System:
  • Main oscillator configurable for RC, crystal, or external clock
  • 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) reset
• On-Chip Peripherals:
  • Multi-functional I/O ports with programmable modes
  • 8-bit Timer with interrupt capability
  • Analog-to-Digital Converter (ADC)
  • Digital Watchdog Timer (DWDT)
• Robust Reset System:
  • Power-on Reset (POR)
  • External RESET pin
  • Watchdog Reset
  • LVD Reset
• Interrupt Handling:
  • Multiple interrupt sources with priority control
  • Interrupt Option Register (IOR) for configuration

Applications

The ST6208C is widely used in embedded systems requiring low-power operation and reliable performance. Typical applications include:

• Home appliances (washing machines, microwaves)
• Automotive control systems (sensors, actuators)
• Industrial automation (motor control, sensors)
• Consumer electronics (remote controls, toys)
• Battery-powered devices

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 6.0V
• Clock Frequency: DC to 8MHz (crystal oscillator)
• I/O Port Current: ±10mA per pin (max)

DC Electrical 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 1mA)
• Output Low Voltage (V_OL): 0.4V (max at 1.6mA)
• Power Consumption:
  • Active Mode: 5mA @ 5V, 8MHz
  • STOP Mode: 1µA (typical)

AC Electrical Characteristics

• Instruction Cycle Time: 0.5µs @ 8MHz
• Reset Pulse Width: 10µs (min)
• Timer Clock Frequency: f_CPU/4 or external input
• ADC Conversion Time: 20µs (typical, 8-bit resolution)

Package Information

The ST6208C is available in multiple package options, including:

• DIP-20: 20-pin Dual Inline Package
• SO-20: 20-pin Small Outline Package
• TSSOP-20: 20-pin Thin Shrink Small Outline Package

Mechanical Dimensions (DIP-20 Example)

• Body Length: 26.2mm (max)
• Body Width: 6.35mm (max)
• Lead Pitch: 2.54mm
• Lead Length: 3.3mm (min)

Development Support

The ST6208C is supported by STMicroelectronics' development tools, including:

• ST6 Assembler and C Compiler
• In-Circuit Emulators (ICE)
• EPROM/OTP programmers
• Evaluation boards

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