AT91M40400 View Datasheet(PDF) - Atmel Corporation

Part Name

Description

MFG CO.

AT91M40400

AT91 ARM® Thumb® Microcontrollers

Atmel Corporation 

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AT91M40400

Figure 25. 0 Wait States, 16-Bit Bus Width, Word Transfer

MCKI

A1-A23

ADDR

ADDR+1

NCS

NLB

NUB

READ ACCESS

• Standard Protocol

NRD

D0-D15

B2B1

B4 B3

Internal Bus

• Early Protocol

NRD

X X B2 B1

B4 B3 B2 B1

D0-D15

B2 B1

B4 B3

WRITE ACCESS

• Byte Write/

Byte Select Option

NWE

D0-D15

B2 B1

B4 B3

23

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