SAB80C517-M16 SIEMENS [Siemens Semiconductor Group], SAB80C517-M16 Datasheet - Page 282

• Manufacturer Part Number: SAB80C517-M16
• Description: 8-Bit CMOS Single-Chip Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

Special Function Registers
All registers, except the program counter and the four general purpose register banks, reside
in the special function register area. The 81 special function registers include arithmetic
registers, pointers, and registers that provide an interface between the CPU and the on-chip
peripherals. There are also 128 directly addressable bits within the SFR area. The special
function registers are listed in table 1. In this table they are organized in groups which refer to
the functional blocks of the SAB 80C517. Block names and symbols are listed in alphabetical
order.
Table 1
Special Function Register
Address
CPU
A/D-
Converter
Interrupt
System
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
ACC
B
DPH
DPL
DPSEL
PSW
SP
ADCON0
ADCON1
ADDAT
DAPR
IEN0
CTCON
IEN1
IEN2
IP0
IP1
IRCON
TCON
T2CON
Register
2)
2)
2)
Name
Accumulator
B-Register
Data Pointer, High Byte
Data Pointer, Low Byte
Data Pointer Select Register
Program Status Word Register
Stack Pointer
A/D Converter Control Register 0
A/D Converter Control Register 1
A/D Converter Data Register
D/AConverter Program Register
Interrupt Enable Register 0
Com. Timer Control Register
Interrupt Enable Register 1
Interrupt Enable Register 2
Interrupt Priority Register 0
Interrupt Priority Register 1
Interrupt Request Control Register
Timer Control Register
Timer 2 Control Register
283
Register Contents
0E0
0F0
83
82
92
0D0
81
0D8
0DC
0D9
0DA
0A8
0E1
0B8
9A
0A9
0B9
0C0
88
0C8
H
H
H
H
H
H
SAB 80C517/80C537
H
H
H
H
H
H
H
H
H
H
H
H
H
H
1)
1)
1)
1)
1)
1)
1)
1)
after Reset
00
00
00
00
XXXX.X000
00
07
00
XXXX.0000
00
00
00
0XXX.0000
00
XXXX.00X0
00
XX00 0000
00
00
00
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
B
B
B
B
B
3)
3)
3)