AT91M40400 데이터 시트보기 (PDF) - Atmel Corporation

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AT91M40400

AT91 ARM® Thumb® Microcontrollers

Atmel Corporation 

Chip Select Change Wait States

A chip select wait state is automatically inserted when con-

secutive accesses are made to two different external mem-

ories (if no wait states have already been inserted). If any

wait states have already been inserted, (e.g. data float

wait) then none are added.

Figure 20. Chip Select Wait

mem 1

chip select wait

mem 2

MCKI

NCS 1

NCS 2

NRD (1)

(2)

NWE

Notes: 1. Early Read Protocol

2. Standard Read Protocol

AT91M40400

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