AT91M40400 View Datasheet(PDF) - Atmel Corporation

Part Name

Description

MFG CO.

AT91M40400

AT91 ARM® Thumb® Microcontrollers

Atmel Corporation 

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Figure 31. 0 Wait States, 16-Bit Bus Width, Byte Transfer

MCKI

A1-A23

ADDR X X X 0

Internal Address

ADDR X X X 0

NCS

NLB

NUB

READ ACCESS

• Standard Protocol

NRD

D0-D15

Internal Bus

• Early Protocol

NRD

X B1

X X X B1

D0-D15

XB1

WRITE ACCESS

• Byte Write Option

NWR0

NWR1

D0-D15

B1B1

• Byte Select Option

NWE

AT91M40400

ADDR X X X 0

ADDR X X X 1

B2X

X X B2X

B2X

B2B2

29

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