SDA5250 Datasheet, PDF (56/143 Pages) Siemens Semiconductor Group – TVTEXT 8-Bit Microcontroller

SDA 525x
6.3.2.3 Special Function Registers
The special function register address space resides between addresses 128 and 255.
All registers except the program counter and the four banks of eight working registers
reside here. Memory mapping the special function registers allows them to be accessed
as easily as the internal RAM. As such, they can be operated on by most instructions. A
complete list of the special function registers is given in Table 13.
In addition, many bit locations within the special function register address space can be
accessed using direct addressing. These direct addressable bits are located at byte
addresses divisible by eight as shown in Table 12.
Semiconductor Group
56
1998-04-08