Data Sheet

Q4000 Technical Data Sheet
Document 1135-0902, REV K 26
Internal Interfaces 4.2
Memory 4.2.1
• 2 Mbytes standard of Flash and RAM.
• 8 Mbytes optional
The Q4000 can have 2 different memory configurations: 2MB and 8 MB. Note that the User Space is limited
to 640KB in both configurations.
Table 4-2, User Flash and RAM Availability
2 MB
8 MB
Available Flash ~1 MB 7 MB
Available RAM 0.5MB 6 MB
A minimum of 100,000 raw program erase cycles are expected from the flash manufacturer before possible
failure. For Raw Flash, there are 64K Flash Sectors and each Flash File System Block is 512 Bytes. It is
recommended to write files that are 64K or larger to ensure that a whole Flash File System Block is written.
Real-Time Clock (RTC) 4.2.2
• Programmable
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