SAF-C164SM Infineon Technologies, SAF-C164SM Datasheet - Page 185
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SAF-C164SM
Manufacturer Part Number
SAF-C164SM
Description
16-Bit CMOS Microcontroller
Manufacturer
Infineon Technologies
Datasheet
1.SAF-C164SM.pdf
(470 pages)
- Current page: 185 of 470
- Download datasheet (6Mb)
Bit
ROMEN
SGTDIS
ROMS1
STKSZ
Note: Register SYSCON cannot be changed after execution of the EINIT instruction.
The layout of the BUSCON registers and ADDRSEL registers is identical (respectively).
Registers BUSCON4 … BUSCON1 control the selected address windows and are
completely under software control. Register BUSCON0, which for example, is also used
for the very first code access after reset, is partly controlled by hardware; that is, it is
initialized via PORT0 during the reset sequence. This hardware control allows defining
an appropriate external bus for systems where no internal program memory is provided.
User’s Manual
Bit SGTDIS controls the correct stack operation (push/pop of CSP or not) during
traps and interrupts.
Function
Internal ROM Enable (Set according to pin EA during reset)
0:
1:
Segmentation Disable/Enable Control
0:
1:
Internal ROM Mapping
0:
1:
System Stack Size
Selects the size of the system stack (in the internal RAM)
from 32 to 1024 words.
Internal program memory disabled,
accesses to the ROM area use the external bus.
Internal program memory enabled.
Segmentation enabled.
(CSP is saved/restored during interrupt entry/exit)
Segmentation disabled (Only IP is saved/restored).
Internal ROM area mapped to segment 0 (00’0000
Internal ROM area mapped to segment 1 (01’0000
9-16
External Bus Interface
C164CM/C164SM
H
H
… 00’7FFF
… 01’7FFF
Derivatives
V1.0, 2002-02
H
H
).
).
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