SAB80C515A-5 Datasheet, PDF (72/108 Pages) Siemens Semiconductor Group – 8-Bit CMOS Single-Chip Microcontroller Family

SAB 80C515A/83C515A-5
Special Function Registers
All registers, except the program counter and the four general purpose register banks, reside
in the special function register area. The 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 2 and table 3.
In table 2 they are organized in numeric order of their addresses. In table 3 they are organized
in groups which refer to the functional blocks of the SAB 80C515A.
Table 2
Special Function Register
Address
Register
Contents
after Reset
Address Register
Contents
after Reset
80_H
P0 ¹⁾
0FF_H
81_H
SP
07_H
82_H
DPL
00_H
83_H
DPH
00_H
84_H
(WDTL)
85_H
(WDTH)
86_H
WDTREL
00_H
87_H
PCON
00_H
98_H
S0CON ¹⁾
99_H
SBUF
9A_H
reserved
9B_H
reserved
9C_H
reserved
9D_H
reserved
9E_H
reserved
9F_H
reserved
88_H
TCON ¹⁾
00_H
89_H
TMOD
00_H
8A_H
TL0
00_H
8B_H
TL1
00_H
8C_H
TH0
00_H
8D_H
TH1
00_H
8E_H
reserved
XX_H ²⁾
8F_H
reserved
XX_H ²⁾
A0_H
P2 ¹⁾
A1_H
reserved
A2_H
reserved
A3_H
reserved
A4_H
reserved
A5_H
reserved
A6_H
reserved
A7_H
reserved
90_H
P1 ¹⁾
0FF_H
A8_H
IEN0 ¹⁾
91_H
XPAGE
XX_H ²⁾
A9_H
IP0
92_H
reserved
XX_H ²⁾
AA_H
SRELL
93_H
reserved
XX_H ²⁾
AB_H
reserved
94_H
reserved
XX_H ²⁾
AC_H
reserved
95_H
reserved
XX_H ²⁾
AD_H
reserved
96_H
reserved
XX_H ²⁾
AE_H
reserved
97_H
reserved
XX_H ²⁾
AF_H
reserved
1) _{Bit-addressable special function registers}
2) _{X means that the value is indeterminate and the location is reserved}
00_H
XX_H ²⁾
XX_H ²⁾
XX_H ²⁾
XX_H ²⁾
XX_H ²⁾
XX_H ²⁾
XX_H ²⁾
0FF_H
XX_H ²⁾
XX_H ²⁾
XX_H ²⁾
XX_H ²⁾
XX_H ²⁾
XX_H ²⁾
XX_H ²
00_H
00_H
0D9_H
XX_H ²⁾
XX_H ²⁾
XX_H ²⁾
XX_H ²⁾
XX_H ²⁾
Semiconductor Group
6-20