EVAL-ADUC832QSZ Analog Devices Inc, EVAL-ADUC832QSZ Datasheet - Page 32
EVAL-ADUC832QSZ
Manufacturer Part Number
EVAL-ADUC832QSZ
Description
KIT DEV FOR ADUC832 QUICK START
Manufacturer
Analog Devices Inc
Series
QuickStart™ Kitr
Type
MCUr
Specifications of EVAL-ADUC832QSZ
Contents
Evaluation Board, Cable, Power Supply, Software and Documentation
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
ADuC832
Lead Free Status / RoHS Status
Compliant, Lead free / RoHS Compliant
Other names
EVAL-ADUC832QS
EVAL-ADUC832QS
EVAL-ADUC832QS
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ADuC832
EXTERNAL DATA MEMORY (EXTERNAL XRAM)
FFFFFFH
FFFFFFH
Similar to a standard 8051-compatible core, the ADuC832 can
access external data memory using a MOVX instruction. The
EXTERNAL
MOVX instruction automatically outputs the various control
DATA
strobes required to access the data memory.
MEMORY
EXTERNAL
SPACE
DATA
(24-BIT
The ADuC832, however, can access up to 16 MB of external
MEMORY
ADDRESS
SPACE
SPACE)
data memory. This is an enhancement of the 64 kB external data
(24-BIT
ADDRESS
memory space available on a standard 8051-compatible core.
SPACE)
The external data memory is discussed in more detail in the
ADuC832 Hardware Design Considerations section.
000800H
0007FFH
INTERNAL XRAM
2 kB
ON-CHIP
XRAM
There are 2 kB of on-chip data memory on the ADuC832. This
000000H
000000H
memory, although on chip, is also accessed via the MOVX instruc-
CFG832[0] = 0
CFG832[0] = 1
tion. The 2 kB of internal XRAM are mapped into the bottom
Figure 34. Internal and External XRAM
2 kB of the external address space if CFG832[0] is set. Otherwise,
access to the external data memory occurs similar to a standard
8051. When using the internal XRAM, Port 0 and Port 2 are
free to be used as general-purpose I/Os.
Rev. A | Page 32 of 92
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