saa-xc886clm Infineon Technologies Corporation, saa-xc886clm Datasheet - Page 31

• Manufacturer Part Number: saa-xc886clm
• Description: 8-bit Single Chip Microcontroller
• Manufacturer: Infineon Technologies Corporation

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Figure 9
With this mechanism, a certain number of interrupt routines (or other routines) can
perform page changes without reading and storing the previously used page information.
The use of only write operations makes the system simpler and faster. Consequently,
this mechanism significantly improves the performance of short interrupt routines.
The SAA-XC886 supports local address extension for:
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Data Sheet
Overwrite the contents of PAGE with the contents of STx, ignoring the value written
to the bit positions of PAGE
(this is done at the end of the interrupt routine to restore the previous page setting
before the interrupt occurred)
Parallel Ports
Analog-to-Digital Converter (ADC)
Capture/Compare Unit 6 (CCU6)
System Control Registers
Storage Elements for Paging
value update
from CPU
STNR
24
PAGE
ST3
ST2
ST1
ST0
Functional Description
SAA-XC886CLM
V1.0, 2009-09