HMS99C52 Datasheet, PDF (18/43 Pages) Hynix Semiconductor – 8-BIT SINGLE-CHIP MICROCONTROLLERS

HMS99C5X Series
Table 3. Contents of SFRs, SFRs in Numeric Order
Address
Register
Bit 7
6
5
81H
SP
82H
DPL
83H
DPH
87H
PCON
SMOD
-
-
88H
TCON
TF1 TR1 TF0
89H
TMOD
GATE C/T
M1
8AH
TL0
8BH
TL1
8CH
TH0
8DH
TH1
8EH
AUXR0
-
-
-
8FH
CKCON
-
-
-
90H
P1
98H
SCON
SM0 SM1 SM2
99H
SBUF
A0H
P2
A8H
IE
EA
-
ET2
B0H
P3
B8H
IP
-
-
PT2
4
3
2
-
GF1 GF0
TR0
IE1
IT1
MT GATE C/T
-
-
-
-
-
-
REN TB8 RB8
ES
ET1 EX1
PS
PT1 PX1
1
PDE
IE0
M1
-
-
TI
ET0
PT0
0
IDLE
IT0
M0
A0
X2
RI
EX0
PX0
- : this bit location is reserved
SFR bit and byte addressable
SFR not bit addressable
14
Jan. 2003 Ver 1.0