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STC89C53RC データシート(PDF) 32 Page - STCmicro Technology Co,.Ltd |
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STC89C53RC データシート(HTML) 32 Page - STCmicro Technology Co,.Ltd |
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32 / 165 page  Symbol Description Address Bit Address and Symbol MSB LSB Value after Power-on or Reset P0 Port 0 80H P0.7 P0.6 P0.5 P0.4 P0.3 P0.2 P0.1 P0.0 1111 1111B SP Stack Pointer 81H 0000 0111B DPTR DPL DPH Data Pointer Low 82H 0000 0000B Data Pointer High 83H 0000 0000B PCON Power Control 87H SMOD SMOD0 - POF GF1 GF0 PD IDL 00x1 0000B TCON Timer/Counter 0 and 1 Control 88H TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0 0000 0000B TMOD Timer/Counter 0 and 1 Modes 89H GATE C/T M1 M0 GATE C/T M1 M0 0000 0000B TL0 Timer/Counter 0 Low Byte 8AH 0000 0000B TL1 Timer/Counter 1 Low Byte 8BH 0000 0000B TH0 Timer/Counter 0 High Byte 8CH 0000 0000B TH1 Timer/Counter 1 High Byte 8DH 0000 0000B AUXR Auxiliary register 0 8EH - - - - - - EXTRAM ALEOFF xxxx xx00B P1 Port 1 90H P1.7 P1.6 P1.5 P1.4 P1.3 P1.2 P1.1 P1.0 1111 1111B SCON Serial Control 98H SM0/FE SM1 SM2 REN TB8 RB8 TI RI 0000 0000B SBUF Serial Buffer 99H xxxx xxxxB P2 Port 2 A0H P2.7 P2.6 P2.5 P2.4 P2.3 P2.2 P2.1 P2.0 1111 1111B AUXR1 Auxiliary register1 A2H - - - - GF2 - - DPS 0xxx 0xx0B IE Interrupt Enable A8H EA - ET2 ES ET1 EX1 ET0 EX0 0000 0000B SADDR Slave Address A9H 0000 0000B P3 Port 3 B0H P3.7 P3.6 P3.5 P3.4 P3.3 P3.2 P3.1 P3.0 1111 1111B IPH Interrupt Priority High B7H PX3H PX2H PT2H PSH PT1H PX1H PT0H PX0H 0000 0000B IP Interrupt Priority Low B8H -- PT2 PS PT1 PX1 PT0 PX0 xx00 0000B SADEN Slave Address Mask B9H 0000 0000B XICON Auxiliary Interrupt Control C0H PX3 EX3 IE3 IT3 PX2 EX2 IE2 IT2 0000 0000B T2CON Timer/Counter 2 Control C8H TF2 EXF2 RCLK TCLK EXEN2 TR2 C/T2 CP/RL2 0000 0000B T2MOD Timer/Counter 2 Mode C9H - - - - - - T2OE DCEN xxxx xx00B RCAP2L Timer/Counter 2 Reload/Capture Low Byte CAH 0000 0000B 32 |
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