C515 Datasheet, PDF (22/55 Pages) Siemens Semiconductor Group – 8-Bit CMOS Microcontroller

C515
Table 3
Contents of the SFRs, SFRs in numeric order of their addresses
Addr Register Content Bit 7
after
Reset¹⁾
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
80H ²⁾ P0
81H SP
82H DPL
83H DPH
87H PCON
88H ²⁾ TCON
89H TMOD
8AH TL0
8BH TL1
8CH TH0
8DH TH1
90H ²⁾ P1
FFH
07H
00H
00H
00H
00H
00H
00H
00H
00H
00H
FFH
.7
.6
.7
.6
.7
.6
.7
.6
SMOD PDS
TF1 TR1
GATE C/T
.7
.6
.7
.6
.7
.6
.7
.6
T2
CLK-
OUT
.5
.5
.5
.5
IDLS
TF0
M1
.5
.5
.5
.5
T2EX
.4
.4
.4
.4
SD
TR0
M0
.4
.4
.4
.4
INT2
.3
.3
.3
.3
GF1
IE1
GATE
.3
.3
.3
.3
INT6
.2
.2
.2
.2
GF0
IT1
C/T
.2
.2
.2
.2
INT5
.1
.1
.1
.1
PDE
IE0
M1
.1
.1
.1
.1
INT4
.0
.0
.0
.0
IDLE
IT0
M0
.0
.0
.0
.0
INT3
98H ²⁾ SCON 00H
99H SBUF XXH
A0H²⁾ P2
FFH
A8H²⁾ IEN0
00H
A9H IP0
X000-
0000B
B0H²⁾ P3
FFH
B1H SYSCON XX1X-
XXXXB
B8H²⁾ IEN1
00H
B9H IP1
XX00-
0000B
C0H²⁾ IRCON 00H
C1H CCEN 00H
SM0
.7
.7
EAL
–
SM1 SM2
.6
.5
.6
.5
WDT ET2
WDTS .5
RD WR T1
–
–
EALE
EXEN2 SWDT EX6
–
–
.5
EXF2 TF2 IEX6
COCA COCAL COCA
H3
3
H2
REN TB8
.4
.3
.4
.3
ES ET1
.4
.3
T0
INT1
–
–
EX5 EX4
.4
.3
IEX5 IEX4
COCAL COCA
2
H1
RB8 TI
.2
.1
.2
.1
EX1 ET0
.2
.1
INT0 TxD
–
–
EX3 EX2
.2
.1
IEX3 IEX2
COCAL COCA
1
H0
RI
.0
.0
EX0
.0
RxD
–
EADC
.0
IADC
COCAL
0
C2H CCL1 00H
.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
Semiconductor Group
22
1997-08-01