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AT89C51IC2-RLTUL Datasheet(PDF) 5 Page - ATMEL Corporation |
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AT89C51IC2-RLTUL Datasheet(HTML) 5 Page - ATMEL Corporation |
5 / 147 page 5 AT89C51IC2 4301D–8051–02/08 Table 2. C51 Core SFRs Mnemonic Add Name 7 6 5 4 3 2 1 0 ACC E0h Accumulator B F0h B Register PSW D0h Program Status Word CY AC F0 RS1 RS0 OV F1 P SP 81h Stack Pointer DPL 82h Data Pointer Low byte DPH 83h Data Pointer High byte Table 3. System Management SFRs Mnemonic Add Name 7 6 5 4 3 2 1 0 PCON 87h Power Control SMOD1 SMOD0 - - GF1 GF0 PD IDL AUXR 8Eh Auxiliary Register 0 - - M0 XRS1 XRS0 EXTRA M AO AUXR1 A2h Auxiliary Register 1 - - ENBOO T - GF3 0 - DPS CKRL 97h Clock Reload Register - - - - - - - - CKSEL 85h Clock Selection Register - - - - - - - CKS OSCON 86h Oscillator Control Register - - - - - SCLKT0 OscBEn OscAEn CKCKON0 8Fh Clock Control Register 0 TWIX2 WDTX2 PCAX2 SIX2 T2X2 T1X2 T0X2 X2 CKCKON1 AFh Clock Control Register 1 - - - - - - - SPIX2 Table 4. Interrupt SFRs Mnemonic Add Name 7 6 5 4 3 2 1 0 IEN0 A8h Interrupt Enable Control 0 EA EC ET2 ES ET1 EX1 ET0 EX0 IEN1 B1h Interrupt Enable Control 1 - - - - - ESPI ETWI KBD IPH0 B7h Interrupt Priority Control High 0 - PPCH PT2H PHS PT1H PX1H PT0H PX0H IPL0 B8h Interrupt Priority Control Low 0 - PPCL PT2L PLS PT1L PX1L PT0L PX0L IPH1 B3h Interrupt Priority Control High 1 - - - - - SPIH TWIH KBDH IPL1 B2h Interrupt Priority Control Low 1 - - - - - SPIL TWIL KBDL |
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