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P87C552 Datasheet

Part Name
Description
MFG CO.
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DESCRIPTION
The 87C552 Single-Chip 8-Bit Microcontroller is manufactured in an advanced CMOS process and is a derivative of the 80C51 microcontroller family. The 87C552 has the same instruction set as the 80C51.
   
FEATURES
• 80C51 central processing unit
• 8k × 8 EPROM expandable externally to 64k bytes
• An additional 16-bit timer/counter coupled to four capture registers
    and three compare registers
• Two standard 16-bit timer/counters
• 256 × 8 RAM, expandable externally to 64k bytes
• Capable of producing eight synchronized, timed outputs
• A 10-bit ADC with eight multiplexed analog inputs
• Fast 8-bit ADC option
• Two 8-bit resolution, pulse width modulation outputs
• Five 8-bit I/O ports plus one 8-bit input port shared with analog
    inputs
• I2C-bus serial I/O port with byte oriented master and slave
    functions
• On-chip watchdog timer
• Extended temperature ranges
• Full static operation – 0 to 16 MHz
• Operating voltage range: 2.7V to 5.5V (0 to 16MHz)
• Security bits:
    – OTP/EPROM – 3 bits
• Encryption array – 64 bytes
• 4 level priority interrupt
• 15 interrupt sources
• Full-duplex enhanced UART
    – Framing error detection
    – Automatic address recognition
• Power control modes
    – Clock can be stopped and resumed
    – Idle mode
    – Power down mode
• Second DPTR register
• ALE inhibit for EMI reduction
• Programmable I/O pins
• Wake-up from power-down by external interrupts
• Software reset
• Power-on detect reset
• ADC charge pump disable
• ONCE mode
• ADC active in Idle mode
   

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