C-DIAS PROCESSOR MODULE
CCP 531
12.04.2017
Page 29
Application exceptions
SRAM and IRQ routines
Writing remnant data during interrupt routines is not allowed and leads to a system crash.
SRAM and consistency of changed data
If more than 32 different sectors are changed (512 bytes each) shortly before shutting
down the voltage supply while the user program is writing to the microSD card, this can
sometimes lead to partial loss of remnant data.
The file system does not support safe writing through SRAM
If files are stored, modified or written on the microSD card from the user program, these
files must always be stored with a fixed maximum size. Since changes in size and the sim-
ultaneous shutdown of the voltage supply can corrupt the file system, a later change in the
file size is not allowed.
Data Breakpoint
This CPU does not support the data breakpoint is a feature.
