Infineon SAB 80C517A, SAB 83C517A-5 User's Manual ... - Keil

3.3 Special Function Registers
Semiconductor Group 3 - 4
Memory Organization
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. All special function registers are
listed in table 3-1 and table 3-2.
In table 3-1 they are organized in numeric order of their addresses. In table 3-2 they are organized
in groups which refer to the functional blocks of the SAB 80C517A.
Table 3-1, Special Function Register
Address Register Contents
after Reset
80H 81H 82H 83H 84H 85H 86H 87H 88H 89H 8AH 8BH 8CH 8DH 8EH 8FH 90H 91H 92H 93H 94H 95H 96H 97H 98H 99H 9AH 9BH 9CH 9DH 9EH 9FH P0 1)
SP
DPL
DPH
(WDTL)
(WDTH)
WDTREL
PCON
TCON 1)
TMOD
TL0
TL1
TH0
TH1
–
–
P1 1)
XPAGE
DPSEL
–
–
–
–
–
S0CON 1)
S0BUF
IEN2
S1CON
S1BUF
S1RELL
–
–
FF H
07 H
00 H
00 H
–
–
00 H
00 H
00 H
00 H
00 H
00 H
00 H
00 H
–
–
FF H
00 H
XXXXX000 B
–
–
–
–
–
00 H
XX H
XX00 00X0 B
0X00 0000 B
XX H
00 H
–
–
1) : Bit-addressable Special Function Register
Address Register Contents
after Reset
A0 H
A1 H
A2 H
A3 H
A4 H
A5 H
A6 H
A7 H
A8 H
A9 H
AA H
AB H
AC H
AD H
AE H
AF H
B0 H
B1 H
B2 H
B3 H
B4 H
B5 H
B6 H
B7 H
B8 H
B9 H
BA H
BB H
BC H
BD H
BE H
BF H
P2 1)
COMSETL
COMSETH
COMCLRL
COMCLRH
SETMSK
CJRMSK
–
IEN0 1)
IP0
SORELL
–
–
–
–
–
P3 1)
SYSCON
–
–
–
–
–
–
IEN1 1)
IP1
S0RELH
S1RELH
–
–
–
–
FF H
00 H
00 H
00 H
00 H
00 H
00 H
–
00 H
00 H
D9 H
–
–
–
–
–
FF H
XXXX XX01 B
–
–
–
–
–
–
00 H
XX00 0000 B
XXXX XX11 B
XXXX XX11 B
–
–
–
–