AC164139 Microchip Technology, AC164139 Datasheet - Page 71
![Graphics Display Prototype Board Graphics](/photos/28/36/283699/ac164139_sml.jpg)
AC164139
Manufacturer Part Number
AC164139
Description
Graphics Display Prototype Board Graphics
Manufacturer
Microchip Technology
Specifications of AC164139
Main Purpose
LCD Development
Embedded
No
Utilized Ic / Part
PICtail™ Plus Board
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Secondary Attributes
-
Primary Attributes
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AC164139
Manufacturer:
Microchip Technology
Quantity:
135
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4.2.5
The
PIC24FJ256DA210
accomplished by a new technique, called the Extended
Data Space (EDS).
The EDS includes any additional internal extended
data memory not accessible by the lower 32 Kbytes
data address space, any external memory through
EPMP and the Program Space Visibility (PSV).
The extended data space is always accessed through
the EDS window, the upper half of data space. The
entire extended data space is organized into EDS
FIGURE 4-4:
2010 Microchip Technology Inc.
Note
enhancement
1:
2:
EXTENDED DATA SPACE (EDS)
Available only in PIC24FJXXXDA2XX devices. In the PIC24FJXXXDA110 devices, this space can be used to access external
memory using EPMP.
Available only in PIC24FJXXXDAX10 devices (100-pin).
30 KB Data
32 KB EDS
Registers
Memory
Function
Window
Special
family
EXTENDED DATA SPACE
of
0x8000
0x0000
0x0800
0xFFFE
the
devices
0x00FFFE
0x008000
Memory
DSxPAG
= 0x001
Extended
Extended SRAM
Internal
data
(1)
EPMP Memory Space
has
space
Memory
0x0187FE
0x01FFFE
0x018000
Extended
0x018800
External
Access
EPMP
DSxPAG
= 0x003
Internal
Memory
(1)
using
PIC24FJ256DA210 FAMILY
(66 KB)
been
(2)
(1)
in
0xFF8000
0xFFFFFE
EPMP
DSx PAG
= 0x1FF
(2)
External
Access
Memory
using
(2)
pages, each having 32 Kbytes of data. Mapping of the
EDS page into the EDS window is done using the Data
Space Read register (DSRPAG<9:0>) for read opera-
tions and Data Space Write register (DSWPAG<8:0>)
for write operations. Figure 4-4 displays the entire EDS
space.
Note:
EDS Space
0x000000
0x007FFE
DSRPAG
= 0x200
Program
Access
Space
Accessing Page 0 in the EDS window will
generate an address error trap as Page 0
is the base data memory (data locations,
0x0800 to 0x7FFF, in the lower data
space).
0x7FFFFE
DSRPAG
= 0x2FF
0x7F8000
Program
Access
Space
Program Memory
0x000001
DSRPAG
= 0x300
0x007FFF
Program
Access
Space
DS39969B-page 71
0x7FFFFF
0x7F8001
DSRPAG
= 0x3FF
Program
Access
Space
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