AT89C51CC03C-RLTIM View Datasheet(PDF) - Atmel Corporation
Part Name
Description
MFG CO.
AT89C51CC03C-RLTIM Datasheet PDF : 197 Pages
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Registers
Table 6. PSW Register
PSW (S:8Eh)
Program Status Word Register
7
6
5
4
3
2
1
0
CY
AC
F0
RS1
RS0
OV
F1
P
Bit
Bit
Number Mnemonic Description
7
CY
Carry Flag
Carry out from bit 1 of ALU operands.
6
AC
Auxiliary Carry Flag
Carry out from bit 1 of addition operands.
5
F0
User Definable Flag 0.
4-3
RS1:0
Register Bank Select Bits
Refer to Table 4 for bits description.
2
OV
Overflow Flag
Overflow set by arithmetic operations.
1
F1
User Definable Flag 1
Parity Bit
0
P
Set when ACC contains an odd number of 1’s.
Cleared when ACC contains an even number of 1’s.
Reset Value = 0000 0000b
Table 7. AUXR Register
AUXR (S:8Eh)
Auxiliary Register
7
6
5
4
3
2
1
0
-
-
M0
XRS2
XRS1
XRS0
EXTRAM
A0
Bit
Bit
Number Mnemonic Description
7-6
-
Reserved
The value read from these bits are indeterminate. Do not set this bit.
Stretch MOVX control:
the RD/ and the WR/ pulse length is increased according to the value of M0.
5
M0 M0
Pulse length in clock period
0
6
1
30
28 AT89C51CC03
4182K–CAN–05/06
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