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Low Cost HC05 Core
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1,240 bytes EPROM/OTP
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64 bytes RAM
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15 Stage Multifunction Timer
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8-bit Free-Running Counter with 7-bit Prescaler
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Four-stage Selectable Periodic Real-Time Interrupt Generator
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Computer Operating Properly Watchdog
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14 Bidirectional I/O Lines
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On-Chip Oscillator
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Crystal or Ceramic Resonator Option (MC68HC705J1A)
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RC Oscillator Option (MC68HRC705J1A)
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Selectable Internal Oscillator Bias Resistor (approximately 2M ohms)
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Internal Steering Diode and Pullup Resistor on RESET pin to Vdd
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Illegal Address Reset
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Power Saving STOP and WAIT Modes
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Selectable Sensitivity on IRQ Interrupt
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Edge and Level Sensitive or Edge Sensitive Only
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EPROM Security Feature
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20-Pin DIP (DIP) or 20-pin Small Outline Integrated Circuit (SOIC)
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