T89C51CC01 Atmel, T89C51CC01 Datasheet - Page 11

• Manufacturer Part Number: T89C51CC01
• Description: Enhanced 8-Bit Microcontroller
• Manufacturer: Atmel

SFR Mapping
Table 3. C51 Core SFRs
Table 4. I/O Port SFRs
Table 5. Timers SFRs
4129K–CAN–01/05
Mnemonic
ACC
B
PSW
SP
DPL
DPH
Mnemonic
P0
P1
P2
P3
P4
Mnemonic
TH0
TL0
TH1
TL1
TH2
TL2
TCON
TMOD
Add Name
Add Name
Add Name
CDh
CCh
D0h Program Status Word
C0h Port 4 (x2)
8Ch
8Dh
E0h Accumulator
F0h B Register
81h Stack Pointer
82h
83h
80h Port 0
90h Port 1
A0h Port 2
B0h Port 3
8Ah
8Bh
88h
89h
Data Pointer Low
byte
LSB of DPTR
Data Pointer High
byte
MSB of DPTR
Timer/Counter 0 High
byte
Timer/Counter 0 Low
byte
Timer/Counter 1 High
byte
Timer/Counter 1 Low
byte
Timer/Counter 2 High
byte
Timer/Counter 2 Low
byte
Timer/Counter 0 and
1 control
Timer/Counter 0 and
1 Modes
The Special Function Registers (SFRs) of the T89C51CC01 fall into the following
categories:
GATE1
TF1
CY
7
7
7
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
C/T1#
TR1
AC
6
6
6
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
M11
TF0
F0
5
5
5
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
RS1
TR0
M01
4
4
4
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
GATE0
RS0
IE1
3
3
3
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
C/T0#
OV
IT1
2
2
2
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
T89C51CC01
M10
IE0
F1
1
1
1
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
M00
IT0
0
0
0
–
–
P
–
–
–
–
–
–
–
–
–
–
–
–
–
–
11