W78E516DDG Datasheet, PDF (17/90 Pages) Nuvotem Talema – 8-BIT MICROCONTROLLER

W78E516D/W78E058D Data Sheet
9 SPECIAL FUNCTION REGISTERS
The W78E516D/W78E058D series uses Special Function Registers (SFRs) to control and monitor
peripherals and their Modes. The SFRs reside in the register locations 80-FFh and are accessed by
direct addressing only. Some of the SFRs are bit addressable. This is very useful in cases where us-
ers wish to modify a particular bit without changing the others. The SFRs that are bit addressable are
those whose addresses end in 0 or 8. The W78E516D/W78E058D series contain all the SFRs present
in the standard 8052. However some additional SFRs are added. In some cases the unused bits in the
original 8052, have been given new functions. The list of the SFRs is as follows.
W78E516D/W78E058D Special Function Registers (SFRs) and Reset Values
F8
F0
+B
E8
E0 +ACC
D8 +P4
D0 +PSW
C8 +T2CON
C0 +XICON
B8
+IP
B0 +P3
A8
+IE
A0 +P2
98 +SCON
90
+P1
88 +TCON
80
+P0
SBUF
TMOD
SP
RCAP2L RCAP2H
P4CONA P4CONB
TL2
SFRAL
P43AL
P42AL
P41AL
TL0
TL1
TH0
DPL
DPH
P40AL
FF
CHPENR
F7
EF
E7
DF
D7
TH2
CF
SFRAH SFRFD SFRCN C7
CHPCON BF
P43AH
B7
P42AH P2ECON
AF
A7
9F
P41AH
97
TH1
AUXR
WDTC 8F
P40AH P0UPR PCON 87
Figure 9-1: Special Function Register Location Table
Note: 1.The SFRs marked with a plus sign(+) are both byte- and bit-addressable.
2. The text of SFR with bold type characters are extension function registers.
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Publication Release Date: Feb 15, 2011
Revision A09