T89C5115 ATMEL Corporation, T89C5115 Datasheet - Page 9

• Manufacturer Part Number: T89C5115
• Description: Low Pin Count 8-bit MCU with A/D Converter and 16-Kbytes of Flash Memory
• Manufacturer: ATMEL Corporation

SFR Mapping
Table 3. C51 Core SFRs
Table 4. I/O Port SFRs
Table 5. Timers SFRs
4128A–8051–04/02
ACC
B
PSW
SP
DPL
DPH
P1
P2
P3
P4
TH0
TL0
TH1
TL1
TH2
TL2
TCON
TMOD
Mnemonic
Mnemonic
Mnemonic
Add
Add
Add
CDh
CCh
E0h Accumulator
D0h Program Status Word
A0h Port 2 (x2)
B0h Port 3
C0h Port 4 (x2)
8Ch
8Ah
8Dh
8Bh
F0h B Register
81h Stack Pointer
82h
83h
90h Port 1
88h
89h
Name
Data Pointer Low
byte
LSB of DPTR
Data Pointer High
byte
MSB of DPTR
Name
Name
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 T89C5115 fall into the following
categories:
GATE1
TF1
CY
7
7
7
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
C/T1#
TR1
AC
6
6
6
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
TF0
M11
F0
5
5
5
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
RS1
M01
TR0
4
4
4
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
GATE0
RS0
IE1
3
3
3
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
C/T0#
OV
IT1
2
2
2
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
T89C5115
M10
IE0
F1
1
1
1
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
M00
IT0
0
0
0
P
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
9