ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 363

• Manufacturer Part Number: ATSAM3S-EK
• Description: KIT EVAL FOR ATSAM3S4C
• Manufacturer: Atmel
• Series: SAM3Sr
• Type: MCUr

Specifications of ATSAM3S-EK

• Contents: Board, Cables, Power Supply
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex-M3
• Kit Contents: Board
• Features: TFT Colour LCD Display, SD/MMC Interface
• Svhc: No SVHC (15-Dec-2010)
• Rohs Compliant: Yes
• For Use With/related Products: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

23.5
6500C–ATARM–8-Feb-11
External Memory Mapping
The SMC provides up to 24 address lines, A[23:0]. This allows each chip select line to address
up to 16 Mbytes of memory.
If the physical memory device connected on one chip select is smaller than 16 Mbytes, it wraps
around and appears to be repeated within this space. The SMC correctly handles any valid
access to the memory device within the page (see
Figure 23-1.
SMC
NCS[0] - NCS[3]
Memory Connections for Four External Devices
A[23:0]
D[7:0]
NWE
NRD
Figure
23-1).
SAM3S Preliminary
24
8
NCS0
NCS1
NCS2
A[23:0]
Memory Enable
Output Enable
Write Enable
D[7:0]
NCS3
Memory Enable
Memory Enable
Memory Enable
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