Rainbow Electronics AT89C51SND1C - Manual (Page 34)

34
AT8xC51SND1C
4109E–8051–06/03
Table 42. Serial I/O Port SFRs
Mnemonic Add Name 7 6 5 4 3 2 1 0
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 92h Baud Rate Control BRR TBCK RBCK SPD SRC
BRL 91h Baud Rate Reload
Table 43. SPI Controller SFRs
Mnemonic Add Name 7 6 5 4 3 2 1 0
SPCON C3h SPI Control SPR2 SPEN SSDIS MSTR CPOL CPHA SPR1 SPR0
SPSTA C4h SPI Status SPIF WCOL - MODF - - - -
SPDAT C5h SPI Data SPD7 SPD6 SPD5 SPD4 SPD3 SPD2 SPD1 SPD0
Table 44. Two Wire Controller SFRs
Mnemonic Add Name 7 6 5 4 3 2 1 0
SSCON 93h Synchronous Serial Control SSCR2 SSPE SSSTA SSSTO SSI SSAA SSCR1 SSCR0
SSSTA 94h Synchronous Serial Status SSC4 SSC3 SSC2 SSC1 SSC0 0 0 0
SSDAT 95h Synchronous Serial Data SSD7 SSD6 SSD5 SSD4 SSD3 SSD2 SSD1 SSD0
SSADR 96h Synchronous Serial Address SSA7 SSA6 SSA5 SSA4 SSA3 SSA2 SSA1 SSGC
Table 45. Keyboard Interface SFRs
Mnemonic Add Name 7 6 5 4 3 2 1 0
KBCON A3h Keyboard Control KINL3 KINL2 KINL1 KINL0 KINM3 KINM2 KINM1 KINM0
KBSTA A4h Keyboard Status KPDE - - - KINF3 KINF2 KINF1 KINF0
Table 46. A/D Controller SFRs
Mnemonic Add Name 7 6 5 4 3 2 1 0
ADCON F3h ADC Control - ADIDL ADEN ADEOC ADSST - - ADCS
ADCLK F2h ADC Clock Divider - - - ADCD4 ADCD3 ADCD2 ADCD1 ADCD0
ADDL F4h ADC Data Low Byte - - - - - - ADAT1 ADAT0
ADDH F5h ADC Data High Byte ADAT9 ADAT8 ADAT7 ADAT6 ADAT5 ADAT4 ADAT3 ADAT2