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AT89S53 数据表(PDF) 9 Page - List of Unclassifed Manufacturers |
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AT89S53 数据表(HTML) 9 Page - List of Unclassifed Manufacturers |
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9 / 26 page ![]() User Manual V2.00 Evalu8r 5 Device Support Atmel 20-pin 8051 microcontrollers Device Microcontroller Number Family Socket Of Pins Polarity Link 3 Link 4 ISP AT89C1051 (U) U1 20 HIGH 1-2 1-2 NO AT89C2051 U1 20 HIGH 1-2 1-2 NO AT89C4051 U1 20 HIGH 1-2 1-2 NO RESET Configuration Figure 4 RESET XTAL1 XTAL2 GND C1 C2 XT1 P3 (7 I/O) Vcc P1 (8 I/O) C6 Vcc 1 20 5 4 10 AT89CX051 20-Pin Microcontroller External RESET Signal 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 RST VCC (RXD) P3.0 P1.7 P3.1 P1.6 XTAL2 P1.5 XTAL1 P1.4 (INT0) P3.2 P1.3 (INT1) P3.3 P1.2 (T0) P3.4 P1.1 (AIN1) (T1) P3.5 P1.0 (AIN0) GND P3.7 Pinout for the AT89X051 Port I/O Function P1 8 LED x 8 P3 7 Push Button + Communications Active HIGH RESET Circuit (Refer to page 12) Figure 6 Figure 5 Figure 7 |
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