Transcription of Programmable Serial Channel 8-bit Microcontroller - Keil
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Programmable Serial Channel 8-bit Microcontroller - Keil
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).
= 40 pF ± 10 pF for Ceramic Resonators C2 XTAL2 GND XTAL1 C1 Status of External Pins During Idle and Power-down Modes Mode Program Memory ALE PSEN PORT0 PORT1 PORT2 PORT3 Idle Internal 1 1 Data Data Data Data Idle External 1 1 Float Data Address Data Power-down Internal 0 0 Data Data Data Data Power-down External 0 0 Float Data Data Data
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