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SN8F5708 Datasheet(PDF) 23 Page - SONiX Technology Company

Part # SN8F5708
Description  8051-based Microcontroller
PDF  204 Pages
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Manufacturer  SONIX [SONiX Technology Company]
Direct Link  http://www.sonix.com.tw
Logo SONIX - SONiX Technology Company

SN8F5708 Datasheet(HTML) 23 Page - SONiX Technology Company

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SN8F5708 Series
Copyright © 2019, SONiX Technology Co., Ltd.
CPU
Datasheet Rev. 2.4
23
5.3 External RAM (XRAM)
1024 X 8-bit XRAM (Extension Data Memory)
The external RAM enlarges the capacity of variables; it is the lowest access performance in the
contrast of internal RAM. Since frequently used variables and local variables are expected to store
in internal RAM, the vast majority of external RAM usages are specific. It can be allocated as a
variable storage area for lower priority tasks, or look-up table preloaded from ROM to speed up
the access period.
Address
RAM Location
0000h
General Purpose Area
Extension RAM Bank 0
…
03FFh
End of Bank 0
The upper 1024-byte XRAM is general purpose RAM and can configure by MOVX instruction
access.



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