T89C5115 ATMEL Corporation, T89C5115 Datasheet - Page 24

• Manufacturer Part Number: T89C5115
• Description: Low Pin Count 8-bit MCU with A/D Converter and 16-Kbytes of Flash Memory
• Manufacturer: ATMEL Corporation

Registers
24
T89C5115
Table 16. PSW Register
PSW (S:8Eh)
Program Status Word Register
Reset Value = 0000 0000b
Number
CY
Bit
4-3
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 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
4128A–8051–04/02
P
0