W79E825A Datasheet, PDF (38/127 Pages) Winbond – 8-BIT MICROCONTROLLER

W79E825A/824A/823B/822B Data Sheet
Continued
BIT NAME
6
AC
5 F0
4~3 RS1~RS0
2 OV
1 F1
0P
FUNCTION
Auxiliary carry:
Set when the previous operation resulted in a carry from the high order nibble.
User flag 0:
The General purpose flag that can be set or cleared by the user.
Register bank select bits.
Overflow flag:
Set when a carry was generated from the seventh bit but not from the 8th bit as
a result of the previous operation, or vice-versa.
User Flag 1:
The General purpose flag that can be set or cleared by the user software.
Parity flag:
Set/cleared by hardware to indicate odd/even number of 1's in the accumulator.
RS.1-0: Register Bank Selection Bits:
RS1
RS0
REGISTER BANK
ADDRESS
0
0
0
00-07h
0
1
1
08-0Fh
1
0
2
10-17h
1
1
3
18-1Fh
PWMP COUNTER HIGH BITS REGISTER
Bit: 7
6
5
4
3
2
-
-
-
-
-
-
Mnemonic: PWMPH
BIT
NAME
FUNCTION
7-2 -
Reserved.
1-0 PWMP.[9:8] The PWM Counter Register bits 9~8.
1
0
PWMP.9 PWMP.8
Address: D1h
PWM 0 HIGH BITS REGISTER
Bit: 7
6
5
4
3
2
-
-
-
-
-
-
Mnemonic: PWM0H
BIT
NAME
FUNCTION
7~2 -
Reserved.
1~0 PWM0.[9:8] The PWM 0 High Bits Register bit 9~8.
1
0
PWM0.9 PWM0.8
Address: D2h
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