at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 25

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

8.2.1.2
8.2.2
8.2.3
6249D–ATARM–20-Dec-07
Static Memory Controller
SDRAM Controller
External Bus Interface 1
• Integrates three External Memory Controllers:
• Additional logic for NANDFlash
• Optional Full 32-bit External Data Bus
• Up to 23-bit Address Bus (up to 8 Mbytes linear)
• Up to 3 Chip Selects, Configurable Assignment:
• Allows supporting an ewternal Frame Buffer for the embedded LCD Controller without
• 8-, 16- or 32-bit Data Bus
• Multiple Access Modes supported
• Multiple device adaptability
• Multiple Wait State Management
• Slow Clock mode supported
• Supported devices
• Numerous configurations supported
• Programming facilities
impacting processor performance.
– Static Memory Controller
– SDRAM Controller
– ECC Controller
– Static Memory Controller on NCS0
– SDRAM Controller or Static Memory Controller on NCS1
– Static Memory Controller on NCS2, Optional NAND Flash support
– Byte Write or Byte Select Lines
– Asynchronous read in Page Mode supported (4- up to 32-byte page size)
– Compliant with LCD Module
– Control signals programmable setup, pulse and hold time for each Memory Bank
– Programmable Wait State Generation
– External Wait Request
– Programmable Data Float Time
– Standard and Low-power SDRAM (Mobile SDRAM)
– 2K, 4K, 8K Row Address Memory Parts
– SDRAM with two or four Internal Banks
– SDRAM with 16- or 32-bit Data Path
– Word, half-word, byte access
– Automatic page break when Memory Boundary has been reached
– Multibank Ping-pong Access
– Timing parameters specified by software
– Automatic refresh operation, refresh rate is programmable
AT91SAM9263 Preliminary
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