SAF-C502-2R20N Siemens Semiconductor Group, SAF-C502-2R20N Datasheet - Page 16

• Manufacturer Part Number: SAF-C502-2R20N
• Description: 8-Bit CMOS Microcontroller
• Manufacturer: Siemens Semiconductor Group

Table 2
Special Function Registers - Functional Blocks
Block
CPU
Interrupt
System
Ports
XRAM
Serial
Channels
Timer 0/
Timer 1
Timer 2
Watchdog
Pow. Sav.
Modes
1)
2)
3)
Semiconductor Group
: Bit-addressable special function registers
: This special function register is listed repeatedly since some bits of it also belong to other functional blocks.
: X means that the value is indeterminate and the location is reserved
Symbol
ACC
B
DPH
DPL
DPSEL
PSW
SP
IE
IP
P0
P1
P2
P3
XPAGE
XCON
SYSCON
PCON
SBUF
SCON
SRELL
SRELH
BAUD
TCON
TH0
TH1
TL0
TL1
TMOD
T2CON
T2MOD
RC2L
RC2H
TH2
TL2
WDCON
WDTREL
PCON
2)
2)
Name
Accumulator
B-Register
Data Pointer, High Byte
Data Pointer, Low Byte
Data pointer select register
Program Status Word Register
Stack Pointer
Interrupt Enable Register
Interrupt Priority Register
Port 0
Port 1
Port 2
Port 3
Page addr. reg. for XRAM
XRAM startaddress (highbyte)
XRAM control register
Power Control Register
Serial Channel Buffer Reg.
Serial Channel Control Reg.
Baudrate Generator Reloadvalue, Lowbyte
Baudrate Generator Reloadvalue, Highbyte
Baudrate Generator Enable Bit
Timer 0/1 Control Register
Timer 0, High Byte
Timer 1, High Byte
Timer 0, Low Byte
Timer 1, Low Byte
Timer Mode Register
Timer 2 Control Register
Timer 2 Mode Register
Timer 2, Reload Capture Register, Low Byte
Timer 2, Reload Capture Register, High Byte
Timer 2, High Byte
Timer 2, Low Byte
Watchdog Timer Control Register
Watchdog Timer Reload Reg.
Power Control Register
15
Address
E0 H
F0 H
83
82
92
D0 H
81
A8 H
B8 H
80 H
90 H
A0 H
B0 H
91 H
94 H
B1 H
87 H
99 H
98 H
AA H
BA H
D8 H
88 H
8C H
8D H
8A H
8B H
89 H
C8 H
C9 H
CA H
CB H
CD H
CC H
C0 H
86 H
87 H
H
H
H
H
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
1)
XXXX XXX0 B
XXXX X000 B
0XXX XXXX B
XXXX XX01 B
XXXX XX11 B
0X00 0000 B
X000 0000 B
XXXX 0000 B
000X 0000 B
after Reset
Contents
XX
FF
FF
FF
FF
D9
00
00
00
00
00
07
00
F8
00
00
00
00
00
00
00
00
00
00
00
00
00
00
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
C502
H
3)
3)
3)
3)
3)
3)
3)
3)
3)
3)