GMS97C2051 Datasheet, PDF (24/39 Pages) Hynix Semiconductor – 8-Bit CMOS Microcontorller

GMS97C1051/L1051
8-Bit CMOS Microcontroller
Special Function Registers
A map of the on-chip memory area called the Special
Function Register (SFR) space is shown in the Table1,
Table 2 and Table 3.
Note that not all of the addresses are occupied, and
unoccupied addresses may not be implemented on the
chip. Read accesses to these addresses will in general
return random data, and write accesses will have an
indeterminate effect.
User software should not write 1s to these unlisted
locations, since they may be used in future products to
invoke new features. In that case, the reset or inactive
values of the new bits will always be 0.
Table 1. GMS97C1051/L1051 SFR Map and Reset Values
0F8H
0F0H
0E8H
0E0H
0D8H
0D0H
0C8H
B
00000000
ACC
00000000
PSW
00000000
0C0H
0B8H
0B0H
0A8H
IP
XXX00000
P3
11111111
IE
0XX00000
0A0H
98H
P1
90H
11111111
TCON
TMOD
TL0
88H
00000000 00000000 00000000
TH0
00000000
SP
DPL
DPH
80H
00000111 00000000 00000000
0FFH
0F7H
0EFH
0E7H
0DFH
0D7H
0CFH
0C7H
0BFH
0B7H
0AFH
0A7H
9FH
97H
8FH
PCON
0XXX0000 ^87H
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