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Q67120-C2002

8-Bit CMOS Microcontroller

Infineon Technologies 

C501

Special Function Registers

The registers, except the program counter and the four general purpose register banks, reside in

the special function register area.

The 27 special function registers (SFRs) include pointers and registers that provide an interface

between the CPU and the other on-chip peripherals. All SFRs with addresses where address bits

0-2 are 0 (e.g. 80H, 88H, 90H, 98H, ..., F8H, FFH) are bitaddressable.

The SFRs of the C501 are listed in table 2 and table 3. In table 2 they are organized in groups

which refer to the functional blocks of the C501. Table 3 illustrates the contents of the SFRs in

numeric order of their addresses.

Semiconductor Group

16

1997-04-01

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