INTRODUCTION
The ST6215C, 25C devices are low cost members of the ST62xx 8-bit HCMOS family of microcontrollers, which is targeted at low to medium complexity applications. All ST62xx devices are based on a building block approach: a common core is surrounded by a number of on-chip peripherals.

■ Memories
    – 2K or 4K bytes Program memory (OTP, EPROM, FASTROM or ROM) with read-out protection
    – 64 bytes RAM
■ Clock, Reset and Supply Management
    – Enhanced reset system
    – Low Voltage Detector (LVD) for Safe Reset
    – Clock sources: crystal/ceramic resonator or RC network, external clock, backup oscillator (LFAO)
    – Oscillator Safeguard (OSG)
    – 2 Power Saving Modes: Wait and Stop
■ Interrupt Management
    – 4 interrupt vectors plus NMI and RESET
    – 20 external interrupt lines (on 2 vectors)
    – 1 external non-interrupt line
■ 20 I/O Ports
    – 20 multifunctional bidirectional I/O lines
    – 16 alternate function lines
    – 4 high sink outputs (20mA)
■ 2 Timers
    – Configurable watchdog timer
    – 8-bit timer/counter with a 7-bit prescaler
■ Analog Peripheral
    – 8-bit ADC with 16 input channels
■ Instruction Set
    – 8-bit data manipulation
    – 40 basic instructions
    – 9 addressing modes
    – Bit manipulation
■ Development Tools
    – Full hardware/software development package