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AT89S53 Datasheet(PDF) 20 Page - List of Unclassifed Manufacturers |
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AT89S53 Datasheet(HTML) 20 Page - List of Unclassifed Manufacturers |
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20 / 26 page ![]() Evalu8r User Manual V2.00 16 Pin Assignments Pin Func1 Func2 Func1 Func2 Function Evalu8r 1 RST RST RESET pin 8051/AVR/ISP/RESET circuit 2 P3.0 (RXD) PD0 (RXD) Serial UART RECEIVE RS-232 Serial RECEIVE 3 P3.1 (TXD) PD1 (TXD) Serial UART TRANSMIT RS-232 Serial Transmit 4 XTAL2 XTAL2 Oscillator Output Pluggable Crystal 5 XTAL1 XTAL1 Oscillator Input Pluggable Crystal 6 P3.2 INT0 PD2 INT0 External Interrupt 0 PB Switch 5 7 P3.3 (INT1) PD2 INT1 External Interrupt 1 PB Switch 4 8 P3.4 T0 PD4 T0 Timer0 Input PB Switch 2 9 P3.5 (T1) PD5 T1 Timer1 Input PB Switch 3 10 GND System GROUND connection GROUND 11 P3.7 PD6 ICP PB Switch 1 12 P1.0 AIN0 PB0 AIN0 Analogue Input 0 LED 0 or A/D INPUT 13 P1.1 AIN1 PB1 AIN1 Analogue Input 1 LED 1 or A/D REF 14 P1.2 PB2 LED 2 15 P1.3 PB3 OC1 LED 3 16 P1.4 PB4 LED 4 17 P1.5 PB5 MOSI SPI - Master OUT, Slave IN LED 5 & SPI 18 P1.6 PB6 MISO SPI - Master IN, Slave OUT LED 6 & SPI 19 P1.7 PB7 SCK SPI - Serial Clock LED 7 & SPI 20 VCC System Vcc Vcc 8051 AVR 20-pin microcontrollers Figure 38 |
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