Rainbow Electronics 71M6542G - Manual (Page 34)

34 © 2008–2011 Teridian Semiconductor Corporation v1.1
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 39
TL1 0x8B 0x00 Timer 1, high byte 39
TH0 0x8C 0x00 Timer 0, low byte 39
TH1 0x8D 0x00 Timer 1, high byte 39
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 36
IEN2 0x9A 0x00 Interrupt Enable Register 2 42
S1CON 0x9B 0x00 Serial Port 1, Control Register 38
S1BUF 0x9C 0x00 Serial Port 1, Data Buffer 36
S1RELL 0x9D 0x00 Serial Port 1, Reload Register, low byte 36
P2 0xA0 0xFF Port 2 36
IEN0 0xA8 0x00 Interrupt Enable Register 0 41
IP0 0xA9 0x00 Interrupt Priority Register 0 45
S0RELL 0xAA 0xD9 Serial Port 0, Reload Register, low byte 36
P3 0xB0 0xFF Port 3 36
IEN1 0xB8 0x00 Interrupt Enable Register 1 41
IP1 0xB9 0x00 Interrupt Priority Register 1 45
S0RELH 0xBA 0x03 Serial Port 0, Reload Register, high byte 36
S1RELH 0xBB 0x03 Serial Port 1, Reload Register, high byte 36
PDATA 0xBF 0x00 High address byte for MOVX@Ri - also called USR2 32
IRCON 0xC0 0x00 Interrupt Request Control Register 42
T2CON 0xC8 0x00 Polarity for INT2 and INT3 42
PSW 0xD0 0x00 Program Status Word 35
WDCON 0xD8 0x00 Baud Rate Control Register (only WDCON[7] bit used) 36
A 0xE0 0x00 Accumulator 35
B 0xF0 0x00 B Register 35