SAM7SE256 查看數據表（PDF） - Atmel Corporation

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SAM7SE256

AT91SAM ARM-based Flash MCU

Atmel Corporation 

Table 3-1. Signal Description List (Continued)

Signal Name

Function

Type

Active

Level

EBI for NAND Flash Support

NANDCS

NAND Flash Chip Select Line

Output

Low

NANDOE

NAND Flash Output Enable

Output

Low

NANDWE

NAND Flash Write Enable

Output

Low

NANDCLE

NAND Flash Command Line Enable

Output

Low

NANDALE

NAND Flash Address Line Enable

Output

Low

SDRAM Controller

SDCK

SDRAM Clock

Output

SDCKE

SDRAM Clock Enable

Output

High

SDCS

SDRAM Controller Chip Select Line

Output

Low

BA[1:0]

Bank Select

Output

SDWE

SDRAM Write Enable

Output

Low

RAS - CAS

Row and Column Signal

Output

Low

NBS[3:0]

Byte Mask Signals

Output

Low

SDA10

SDRAM Address 10 Line

Note: 1. Refer to Section 6. ”I/O Lines Considerations” .

Output

Comments

Tied low after reset

8 SAM7SE512/256/32

6222H–ATARM–25-Jan-12

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