Transcription of Programmable Serial Channel 8-bit Microcontroller
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Programmable Serial Channel 8-bit Microcontroller
1 (RXD) (TXD) (INT0) (INT1) (T0) (T1) (AD4) (AD5) (AD6) (AD7)EA/ (A15) (A14) (A13)44434241403938373635341213141516171 819202122(WR) (RD) (A8) (A9) (A10) (A11) (A12) (T2 EX) (T2) (AD0) (AD1) (AD2) (AD3)Features Compatible with MCS-51 Products 4K Bytes of In-System Reprogrammable Flash Memory Endurance: 1,000 Write/Erase Cycles Fully Static Operation: 0 Hz to 24 MHz Three-level Program Memory Lock 128 x 8-bit Internal RAM 32 Programmable I/O Lines Two 16-bit Timer/Counters Six Interrupt Sources Programmable Serial Channel Low-power Idle and Power-down ModesDescriptionThe AT89C51 is a low-power, high-performance CMOS 8-bit microcomputer with 4 Kbytes of Flash Programmable and erasable read only memory (PEROM). The deviceis manufactured using Atmel s high-density nonvolatile memory technology and iscompatible with the industry-standard MCS-51 instruction set and pinout.
serial port and interrupt system to continue functioning. The Power-down Mode saves the RAM contents but freezes the oscillator disabling all other chip functions until the next hardware reset. Pin Description VCC Supply voltage. GND Ground. Port 0 Port 0 is an 8-bit open-drain bi-directional I/O port. As an output port, each pin can sink eight ...
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