ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 361
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ATSAM3S-EK
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATSAM3S-EK
Manufacturer:
Atmel
Quantity:
135
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23. Static Memory Controller (SMC)
23.1
23.2
6500C–ATARM–8-Feb-11
Description
Embedded Characteristics
The External Bus Interface is designed to ensure the successful data transfer between several
external devices and the Cortex-M3 based device. The External Bus Interface of the SAM3S
consists of a Static Memory Controller (SMC).
This SMC is capable of handling several types of external memory and peripheral devices, such
as SRAM, PSRAM, PROM, EPROM, EEPROM, LCD Module, NOR Flash and NAND Flash.
The Static Memory Controller (SMC) generates the signals that control the access to the exter-
nal memory devices or peripheral devices. It has 4 Chip Selects, a 24-bit address bus, and an 8-
bit data bus. Separate read and write control signals allow for direct memory and peripheral
interfacing. Read and write signal waveforms are fully adjustable.
The SMC can manage wait requests from external devices to extend the current access. The
SMC is provided with an automatic slow clock mode. In slow clock mode, it switches from user-
programmed waveforms to slow-rate specific waveforms on read and write signals. The SMC
supports asynchronous burst read in page mode access for page size up to 32 bytes.
The External Data Bus can be scrambled/unscrambled by means of user keys.
• 16-Mbyte Address Space per Chip Select
• 8- bit Data Bus
• Word, Halfword, Byte Transfers
• Programmable Setup, Pulse And Hold Time for Read Signals per Chip Select
• Programmable Setup, Pulse And Hold Time for Write Signals per Chip Select
• Programmable Data Float Time per Chip Select
• External Wait Request
• Automatic Switch to Slow Clock Mode
• Asynchronous Read in Page Mode Supported: Page Size Ranges from 4 to 32 Bytes
• NAND FLASH additional logic supporting NAND Flash with Multiplexed Data/Address buses
• Hardware Configurable number of chip select from 1 to 4
• Programmable timing on a per chip select basis
SAM3S Preliminary
361
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