Table 44. IDE Interface SFR
Mnemonic Add Name
7
6
5
4
3
2
1
0
DAT16H
F9h High Order Data Byte
D15
D14
D13
D12
D11
D10
D9
D8
Table 45. Serial I/O Port SFRs
Mnemonic Add Name
7
6
5
4
3
2
1
0
SCON
SBUF
98h Serial Control
FE/SM0
SM1
SM2
REN
TB8
RB8
TI
RI
99h Serial Data Buffer
B9h Slave Address Mask
A9h Slave Address
SADEN
SADDR
BDRCON
BRL
92h Baud Rate Control
91h Baud Rate Reload
BRR
TBCK
RBCK
SPD
SRC
Table 46. SPI Controller SFRs
Mnemonic Add Name
7
6
5
SSDIS
-
4
3
2
1
0
SPCON
SPSTA
SPDAT
C3h SPI Control
C4h SPI Status
C5h SPI Data
SPR2
SPIF
SPD7
SPEN
WCOL
SPD6
MSTR
MODF
SPD4
CPOL
-
CPHA
-
SPR1
-
SPR0
-
SPD5
SPD3
SPD2
SPD1
SPD0
Table 47. Two Wire Controller SFRs
Mnemonic Add Name
7
6
5
4
3
2
1
0
SSCON
SSSTA
SSDAT
SSADR
93h Synchronous Serial Control
94h Synchronous Serial Status
95h Synchronous Serial Data
96h Synchronous Serial Address
SSCR2
SSC4
SSD7
SSA7
SSPE
SSC3
SSD6
SSA6
SSSTA
SSC2
SSD5
SSA5
SSSTO
SSC1
SSD4
SSA4
SSI
SSAA
0
SSCR1
0
SSCR0
0
SSC0
SSD3
SSA3
SSD2
SSA2
SSD1
SSA1
SSD0
SSGC
Table 48. Keyboard Interface SFRs
Mnemonic Add Name
7
-
6
-
5
-
4
KINL0
-
3
-
2
-
1
-
0
KBCON
KBSTA
A3h Keyboard Control
A4h Keyboard Status
KINM0
KINF0
KPDE
-
-
-
-
-
34
AT8xC51SND2C
4341D–MP3–04/05
ATMEL [ ATMEL ]
