Datasheet

71M6541D/F/G and 71M6542F/G Data Sheet
34 Rev 4
Hex/
Bin
Bit
Addressable
Byte Addressable
Bin/
Hex
X000
X001
X010
X011
X100
X101
X110
X111
98
S0CON
S0BUF
IEN2
S1CON
S1BUF
S1RELL
EEDATA
EECTRL
9F
90
P1(DIO4:7)
DPS
ERASE
97
88
TCON
TMOD
TL0
TL1
TH0
TH1
CKCON
8F
80
P0 (DIO0:3)
SP
DPL
DPH
DPL1
DPH1
PCON
87
2.4.3 Generic 80515 Special Function Registers
Table 13 shows the location, description and reset or power-up value of the generic 80515 SFRs. Additional
descriptions of the registers can be found at the page numbers listed in the table.
Table 13: Generic 80515 SFRs - Location and Reset Values
Name
Address
(Hex)
Reset value
(Hex)
Description Page
P0
0x80
0xFF
Port 0
36
SP
0x81
0x07
Stack Pointer
35
DPL
0x82
0x00
Data Pointer Low 0
35
DPH
0x83
0x00
Data Pointer High 0
35
DPL1
0x84
0x00
Data Pointer Low 1
35
DPH1
0x85
0x00
Data Pointer High 1
35
PCON
0x87
0x00
UART Speed Control
39
TCON
0x88
0x00
Timer/Counter Control
42
TMOD
0x89
0x00
Timer Mode Control
40
TL0
0x8A
0x00
Timer 0, low byte
40
TL1
0x8B
0x00
Timer 1, high byte
40
TH0
0x8C
0x00
Timer 0, low byte
40
TH1
0x8D
0x00
Timer 1, high byte
40
CKCON
0x8E
0x01
Clock Control (Stretch=1)
36
P1
0x90
0xFF
Port 1
36
DPS
0x92
0x00
Data Pointer select Register
32
S0CON
0x98
0x00
Serial Port 0, Control Register
38
S0BUF
0x99
0x00
Serial Port 0, Data Buffer
37
IEN2
0x9A
0x00
Interrupt Enable Register 2
42
S1CON
0x9B
0x00
Serial Port 1, Control Register
39
S1BUF
0x9C
0x00
Serial Port 1, Data Buffer
37
S1RELL
0x9D
0x00
Serial Port 1, Reload Register, low byte
37
P2
0xA0
0xFF
Port 2
36
IEN0
0xA8
0x00
Interrupt Enable Register 0
42
IP0
0xA9
0x00
Interrupt Priority Register 0
45
S0RELL
0xAA
0xD9
Serial Port 0, Reload Register, low byte
37
P3
0xB0
0xFF
Port 3
36
IEN1
0xB8
0x00
Interrupt Enable Register 1
42
IP1
0xB9
0x00
Interrupt Priority Register 1
45
S0RELH
0xBA
0x03
Serial Port 0, Reload Register, high byte
37
S1RELH
0xBB
0x03
Serial Port 1, Reload Register, high byte
37
PDATA
0xBF
0x00
High address byte for MOVX@Ri - also called USR2
32
IRCON
0xC0
0x00
Interrupt Request Control Register
43