W78IRD2 Datasheet, PDF (25/76 Pages) Winbond – 8-BIT MICROCONTROLLER

W78IRD2
BIT NAME
FUNCTION
7
CY
Carry flag: Set when an arithmetic operation results in a carry being generated from
the ALU. It is also used as the accumulator for bit operations.
6
AC
Auxiliary carry: Set when the previous operation resulted in a carry from the high order
nibble.
5
F0 General–purpose, user-defined flag 0.
4 RS1 Register bank select bits: See below.
3 RS0 Register bank select bits: See below.
2
OV
Overflow flag: Set when a carry was generated from the seventh bit but not from the
eighth bit as a result of the previous operation, or vice-versa.
1
F1 General–purpose, user-defined flag 1.
0
P
Parity flag: Set and cleared by the hardware to indicate an odd or even number,
respectively, of 1's in the accumulator.
RS.1-0: Register bank select bits:
RS1
RS0
0
0
0
1
1
0
1
1
REGISTER BANK
0
1
2
3
ADDRESS
00-07h
08-0Fh
10-17h
18-1Fh
PCA Counter Control Register
Bit:
7
6
5
CF
CR
-
4
CCF4
Mnemonic: CCON
Address: D8h
3
CCF3
2
CCF2
1
CCF1
0
CCF0
PCA Counter Mode Register
Bit:
7
6
CIDL WDTE
Mnemonic: CMOD
5
4
3
-
-
-
Address: D9h
2
1
CPS1 CPS0
0
ECF
PCA Module 0 Register
Bit:
7
6
5
4
- ECOM0 CAPP0 CAPN0
3
MAT0
Mnemonic: CCAPM0 Address: DAh
2
1
0
TOG0 PWM0 ECCF0
- 25 -
Publication Release Date: October 2, 2006
Revision A7