DS_1209F_004
73S1209F Data Sheet
Rev. 1.2
19
1.5.2 IRAM Special Function Registers (Generic 80515 SFRs)
Table 7 shows the location of the SFRs and the value they assume at reset or power-up.
Table 7: IRAM Special Function Registers Reset Values
Name Location
Reset
Value
Description
0x81
0x07
Stack Pointer
0x82
0x00
Data Pointer Low 0
0x83
0x00
Data Pointer High 0
0x84
0x00
Data Pointer Low 1
0x85
0x00
Data Pointer High 1
0x86
0x00
Watchdog Timer Reload register
0x87
0x00
Power Control
0x88
0x00
Timer/Counter Control
0x89
0x00
Timer Mode Control
0x8A
0x00
Timer 0, low byte
0x8B
0x00
Timer 1, high byte
0x8C
0x00
Timer 0, low byte
0x8D
0x00
Timer 1, high byte
0x8F
0x0A
Master Clock Control
0x90
0xFF
User Port Data (7:0)
0x91
0xFF
User Port Direction (7:0)
0x92
0x00
Data Pointer select Register
0x94
0x00
Flash Erase
0x98
0x00
Serial Port 0, Control Register
0x99
0x00
Serial Port 0, Data Buffer
0x9A
0x00
Interrupt Enable Register 2
0x9B
0x00
Serial Port 1, Control Register
0x9C
0x00
Serial Port 1, Data Buffer
0x9D
0x00
Serial Port 1, Reload Register, low byte
0xA0
0x00
User Port Data (8)
0xA1
0x01
User Port Direction (8)
0xA8
0x00
Interrupt Enable Register 0
0xA9
0x00
Interrupt Priority Register 0
0xAA
0xD9
Serial Port 0, Reload Register, low byte
0xB2
0x00
Flash Control
0xB7
0x00
Flash Page Address
0xB8
0x00
Interrupt Enable Register 1
0xB9
0x00
Interrupt Priority Register 1
0xBA
0x03
Serial Port 0, Reload Register, high byte
0xBB
0x03
Serial Port 1, Reload Register, high byte
0xC0
0x00
Interrupt Request Control Register
0xC8
0x00
Timer 2 Control