Erratas
44/56
netX 50 to netX 51/52 | Migration Guide
DOC120109MG05EN | Revision 5 | English | 2013-08 | Released | Public
2012-2013
5.2.2
Simultaneous Operation of SDRAM and parallel Flash Memory
at the Memory Interface
For the netX 51, the following maximum load capacity applies for operation of SDRAM at the
Memory Interface
:
Signal
Maximum Load Capacity
MEM_D0 … D31
15 pF
All other signals
10 pF
Important:
This means never connect parallel Flash memory to the Memory Interface when using
SDRAM memory.
Operating one or more parallel flash memories – given that at the same time no SDRAM memory
is connected - is possible at the Memory Interface, even if the maximum load capacity is thereby
exceeded.
The SDRAM controller in the netX must be
deactivated
when operating flash memory, to avoid
wrong address mapping causing data errors.
Note:
The limitations described above do not apply for the Host Interface. It is possible to
operate SDRAM memory and parallel Flash Memory at the Host Interface at the same.
time. Maximum load capacity for SDRAM at the Host Interface is 30 pF.
