Maxim Integrated 71M6521BE Energy Meter IC Family Software - Manual (Page 117)

71M652X Software User’s Guide
Revision 1.7 TERIDIAN Proprietary 117 of 138
© Copyright 2005-2007 TERIDIAN Semiconductor Corporation
Instructions that Affect Flags
Instruction
Affected Flag
Instruction
Affected Flag
C OV AC C OV AC
ADD X X X CLR C 0
ADDC X X X CPL C X
SUBB X X X ANL C, bit X
MUL 0 X ANL C, /bit X
DIV 0 X ORL C, bit X
DA X ORL C, /bit X
RRC X MOV C, bit X
RLC X CJNE X
SETB C 1
Table 6-17: Instructions Affecting Flags
Note: Operations affecting the PSW or bits in the PSW will also affect flag settings
6.3 80515 HARDWARE DESCRIPTION
The 80515 core implemented in the 71M652X chips consists of:
1. Control processor unit (CPU), also referred to as MPU throughout this document
2. Arithmetic-logic
unit
3. Clock control unit
4. Memory control unit
5. RAM and SFR control unit
6. Ports registers unit
7. Timer 0, 1 unit
8. Serial 0, 1 interfaces
9. Watchdog
timer
10. Interrupt service routine unit