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AT89C51ED2-RLTUM Datasheet(PDF) 7 Page - ATMEL Corporation |
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AT89C51ED2-RLTUM Datasheet(HTML) 7 Page - ATMEL Corporation |
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7 / 137 page  7 4235K–8051–05/08 AT89C51RD2/ED2 shows all SFRs with their address and their reset value. Table 3-9. Keyboard Interface SFRs Mnemonic Add Name 7 6 5 4 3 2 1 0 KBLS 9Ch Keyboard Level Selector KBLS7 KBLS6 KBLS5 KBLS4 KBLS3 KBLS2 KBLS1 KBLS0 KBE 9Dh Keyboard Input Enable KBE7 KBE6 KBE5 KBE4 KBE3 KBE2 KBE1 KBE0 KBF 9Eh Keyboard Flag Register KBF7 KBF6 KBF5 KBF4 KBF3 KBF2 KBF1 KBF0 Table 3-10. EEPROM data Memory SFR (AT89C51ED2 only) Mnemonic Add Name 7 6 5 4 3 2 1 0 EECON D2h EEPROM Data Control EEE EEBUSY Table 3-11. SFR Mapping Bit Addressable Non Bit Addressable 0/8 1/9 2/A 3/B 4/C 5/D 6/E 7/F F8h CH 0000 0000 CCAP0H XXXX XXXX CCAP1H XXXX XXXX CCAP2H XXXX XXXX CCAP3H XXXX XXXX CCAP4H XXXX XXXX FFh F0h B 0000 0000 F7h E8h P5 bit addressable 1111 1111 CL 0000 0000 CCAP0L XXXX XXXX CCAP1L XXXX XXXX CCAP2L XXXX XXXX CCAP3L XXXX XXXX CCAP4L XXXX XXXX EFh E0h ACC 0000 0000 E7h D8h CCON 00X0 0000 CMOD 00XX X000 CCAPM0 X000 0000 CCAPM1 X000 0000 CCAPM2 X000 0000 CCAPM3 X000 0000 CCAPM4 X000 0000 DFh D0h PSW 0000 0000 FCON XXXX 0000 EECON xxxx xx00 D7h C8h T2CON 0000 0000 T2MOD XXXX XX00 RCAP2L 0000 0000 RCAP2H 0000 0000 TL2 0000 0000 TH2 0000 0000 CFh C0h P4 1111 1111 SPCON 0001 0100 SPSTA 0000 0000 SPDAT XXXX XXXX P5 byte Addressable 1111 1111 C7h B8h IPL0 X000 000 SADEN 0000 0000 BFh B0h P3 1111 1111 IEN1 XXXX X000 IPL1 XXXX X000 IPH1 XXXX X000 IPH0 X000 0000 B7h A8h IEN0 0000 0000 SADDR 0000 0000 CKCON1 XXXX XXX0 AFh |
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