GMS90X5XC Series | HYUNDAI MicroElectronics |
SPECIAL FUNCTION REGISTERS
All registers, except the program counter and the four general purpose register banks, reside in the special func- tion register area.
The 28 special function registers (SFR) include pointers and registers that provide an interface between the CPU and the other
All SFRs are listed in Table 1, Table 2, and Table 3.
In Table 1 they are organized in numeric order of their addresses. In Table 2 they are organized in groups which refer to the functional blocks of the GMS90X5XC series. Table 3 illustrates the contents of the SFRs
Table 1. Special Function Registers in Numeric Order of their Addresses (cont’d)
Address | Register | Contents after |
| Address | Register | Contents after |
Reset |
| Reset | ||||
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|
|
|
|
80H | P0 1) | FFH |
| 88H | TCON 1) | 00H |
81H | SP | 07H |
| 89H | TMOD | 00H |
82H | DPL | 00H |
| 8AH | TL0 | 00H |
83H | DPH | 00H |
| 8BH | TL1 | 00H |
84H | reserved | XXH 2) |
| 8CH | TH0 | 00H |
85H | reserved | XXH 2) |
| 8DH | TH1 | 00H |
86H | reserved | XXH 2) |
| 8EH | AUXR0 | XXH 2) |
87H | PCON | 0XXX0000B 2) |
| 8FH | CKCON | XXXXXXX0B 2) |
90H | P1 1) | FFH |
| 98H | SCON 1) | 00H |
91H | reserved | 00H |
| 99H | SBUF | XXH 2) |
92H | reserved | XXH 2) |
| 9AH | reserved | XXH 2) |
93H | reserved | XXH 2) |
| 9BH | reserved | XXH 2) |
94H | reserved | XXH 2) |
| 9CH | reserved | XXH 2) |
95H | reserved | XXH 2) |
| 9DH | reserved | XXH 2) |
96H | reserved | XXH 2) |
| 9EH | reserved | XXH 2) |
97H | reserved | XXH 2) |
| 9FH | reserved | XXH 2) |
A0H | P2 3) | FFH |
| A8H | IE 1) | 0X000000B 2) |
A1H | reserved | XXH 2) |
| A9H | reserved | XXH 2) |
A2H | reserved | XXH 2) |
| AAH | reserved | XXH 2) |
A3H | reserved | XXH 2) |
| ABH | reserved | XXH 2) |
A4H | reserved | XXH 2) |
| ACH | reserved | XXH 2) |
A5H | reserved | XXH 2) |
| ADH | reserved | XXH 2) |
A6H | reserved | XXH 2) |
| AEH | reserved | XXH 2) |
A7H | reserved | XXH 2) |
| AFH | reserved | XXH 2) |
B0H | P3 1) | FFH |
| B8H | IP 1) | XX000000B 2) |
B1H | reserved | XXH 2) |
| B9H | reserved | XXH 2) |
B2H | reserved | XXH 2) |
| BAH | reserved | XXH 2) |
B3H | reserved | XXH 2) |
| BBH | reserved | XXH 2) |
B4H | reserved | XXH 2) |
| BCH | reserved | XXH 2) |
B5H | reserved | XXH 2) |
| BDH | reserved | XXH 2) |
B6H | reserved | XXH 2) |
| BEH | reserved | XXH 2) |
B7H | reserved | XXH 2) |
| BFH | reserved | XXH 2) |
Jan. 2001 Ver 1.0 | 11 |
