Datasheet

C505/C505C/C505A/C505CA
Data Sheet 22 12.00
Table 4
Contents of the SFRs, SFRs in numeric order of their addresses
Addr Register Content
after
Reset
1)
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
80
H
2)
P0 FF
H
.7 .6 .5 .4 .3 .2 .1 .0
81
H
SP 07
H
.7 .6 .5 .4 .3 .2 .1 .0
82
H
DPL 00
H
.7 .6 .5 .4 .3 .2 .1 .0
83
H
DPH 00
H
.7 .6 .5 .4 .3 .2 .1 .0
86
H
WDTREL 00
H
WDT
PSEL
.6 .5 .4 .3 .2 .1 .0
87
H
PCON 00
H
SMOD PDS IDLS SD GF1 GF0 PDE IDLE
88
H
2)
TCON 00
H
TF1 TR1 TF0 TR0 IE1 IT1 IE0 IT0
88
H
3)
PCON1 0XX0-
XXXX
B
EWPD – – WS – – – –
89
H
TMOD 00
H
GATE C/T
M1 M0 GATE C/T M1 M0
8A
H
TL0 00
H
.7 .6 .5 .4 .3 .2 .1 .0
8B
H
TL1 00
H
.7 .6 .5 .4 .3 .2 .1 .0
8C
H
TH0 00
H
.7 .6 .5 .4 .3 .2 .1 .0
8D
H
TH1 00
H
.7 .6 .5 .4 .3 .2 .1 .0
90
H
2)
P1 FF
H
T2 CLK-
OUT
T2EX .4 INT6 INT5 INT4 .INT3
90
H
3)
P1ANA FF
H
EAN7 EAN6 EAN5 EAN4 EAN3 EAN2 EAN1 EAN0
91
H
XPAGE 00
H
.7 .6 .5 .4 .3 .2 .1 .0
92
H
DPSEL XXXX-
X000
B
–––––.2 .1 .0
98
H
2)
SCON 00
H
SM0 SM1 SM2 REN TB8 RB8 TI RI
99
H
SBUF XX
H
.7 .6 .5 .4 .3 .2 .1 .0
A0
H
2)
P2 FF
H
.7 .6 .5 .4 .3 .2 .1 .0
A8
H
2)
IEN0 00
H
EA WDT ET2 ES ET1 EX1 ET0 EX0
A9
H
IP0 00
H
OWDS WDTS .5 .4 .3 .2 .1 .0
AA
H
SRELL D9
H
.7 .6 .5 .4 .3 .2 .1 .0
1) X means that the value is undefined and the location is reserved
2) Bit-addressable special function registers
3) SFR is located in the mapped SFR area. For accessing this SFR, bit RMAP in SFR SYSCON must be set.