SAF-C164SM Infineon Technologies, SAF-C164SM Datasheet - Page 457
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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: 457 of 470
- Download datasheet (6Mb)
23.5
PEC Pointer Registers
The source and destination pointers for the Peripheral Event Controller (PEC) are
mapped to a special area within the internal RAM. Pointers not occupied by the PEC may
be used like normal RAM. During Power Down mode or any warm reset, the PEC
pointers are preserved.
The PEC and its registers are described in
GPR Access in the ESFR Area
The locations 00’F000
access the current register bank via short register addressing modes. The GPRs are
mirrored to the ESFR area to allow access to the current register bank even after
switching register spaces (see example below).
MOV
EXTR
MOV
Writing Bytes to SFRs
All Special Function Registers may be accessed wordwise or bytewise (some of them
even bitwise). Reading bytes from word SFRs is a non-critical operation. However, when
writing bytes to word SFRs, the complementary byte of the respective SFR is cleared
with the write operation.
User’s Manual
R5, DP8
#1
R5, ODP8
Special Notes
H
… 00’F01E
;GPR access via SFR area
;GPR access via ESFR area
H
within the ESFR area are reserved and allow to
23-18
Chapter
5.
C164CM/C164SM
Derivatives
Register Set
V1.0, 2002-02
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