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AT89C51RB2-3CSIM Datasheet(PDF) 7 Page - ATMEL Corporation |
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AT89C51RB2-3CSIM Datasheet(HTML) 7 Page - ATMEL Corporation |
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7 / 127 page  7 AT89C51RB2/RC2 4180C–8051–12/03 Table 8. Serial I/O Port SFRs Mnemonic Add Name 76543210 SCON 98h Serial Control FE/SM0 SM1 SM2 REN TB8 RB8 TI RI SBUF 99h Serial Data Buffer SADEN B9h Slave Address Mask SADDR A9h Slave Address BDRCON 9Bh Baud Rate Control BRR TBCK RBCK SPD SRC BRL 9Ah Baud Rate Reload Table 9. SPI Controller SFRs Mnemonic Add Name 76543210 SPCON C3h SPI Control SPR2 SPEN SSDIS MSTR CPOL CPHA SPR1 SPR0 SPSTA C4h SPI Status SPIF WCOL SSERR MODF ---- SPDAT C5h SPI Data SPD7 SPD6 SPD5 SPD4 SPD3 SPD2 SPD1 SPD0 Table 10. Keyboard Interface SFRs Mnemonic Add Name 76543210 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 |
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