TSC80251 TEMIC [TEMIC Semiconductors], TSC80251 Datasheet - Page 25
TSC80251
Manufacturer Part Number
TSC80251
Description
Manufacturer
TEMIC [TEMIC Semiconductors]
Datasheet
1.TSC80251.pdf
(219 pages)
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Rev. C – May 7, 1999
3.5. Special Function Registers (SFRs)
The Special Function Registers (SFRs) reside in their associated on–chip peripherals or in the core. SFR addresses are
preceded by “S:” to differentiate them from addresses in the memory space. Unoccupied locations in the SFR space
are unimplemented, i.e., no register exists. If an unimplemented SFR location is read, it returns an unspecified value.
Note :
SFRs may be accessed only as bytes; they may not be accessed as words or dwords.
A
B
PW
PSW1
SP
SPH
DPTR
DPL
DPH
DPXL
IE0
IE1
IPL0
IPL1
IPH0
IPH1
Note:
These SFRs can also be accessed by their corresponding registers in the register file (See
Table 3.3.
Mnemonic
Accumulator
B register
Program Status Word
Program Status Word 1
Stack Pointer - LSB of SPX
Stack Pointer high - MSB of SPX
Data Pointer (2 bytes)
Low Byte of DPTR
high Byte of DPTR
Data Pointer, Extended Low
Interrupt Enable Control 0
Interrupt Enable Control 1
Interrupt Priority Control Low 0
Interrupt Priority Control Low 1
Interrupt Priority Control High 0
Interrupt Priority Control High 1
Table 3.4. Core SFRs
Name
Address
TSC80251
S:D0h
S:D1h
S:BEh
S:A8h
S:E0h
S:B1h
S:B8h
S:B3h
S:B7h
S:B2h
S:F0h
S:81h
S:82h
S:83h
S:84h
–
3.9