AT83C51SND1C_03 ATMEL [ATMEL Corporation], AT83C51SND1C_03 Datasheet - Page 28

• Manufacturer Part Number: AT83C51SND1C_03
• Description: Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface
• Manufacturer: ATMEL [ATMEL Corporation]

Registers
28
AT8xC51SND1C
Table 28. PSW Register
PSW (S:8Eh) – Program Status Word Register
Reset Value = 0000 0000b
Number
4 - 3
CY
Bit
7
7
6
5
2
1
0
Mnemonic Description
RS1:0
AC
Bit
CY
AC
OV
F0
F1
6
P
Carry Flag
Carry out from bit 1 of ALU operands.
Auxiliary Carry Flag
Carry out from bit 1 of addition operands.
User Definable Flag 0
Register Bank Select Bits
Refer to Table 25 for bits description.
Overflow Flag
Overflow set by arithmetic operations.
User Definable Flag 1
Parity Bit
Set when ACC contains an odd number of 1’s.
Cleared when ACC contains an even number of 1’s.
F0
5
RS1
4
RS0
3
OV
2
F1
1
4109E–8051–06/03
P
0