at91sam9260-cj ATMEL Corporation, at91sam9260-cj Datasheet - Page 153

• Manufacturer Part Number: at91sam9260-cj
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

Figure 20-6. NANDFlash Signal Multiplexing on EBI Pins
20.6.7.2
Figure 20-7. NANDFlash Application Example
6221G–ATARM–31-Jan-08
NANDFlash Signals
SMC
The address latch enable and command latch enable signals on the NANDFlash device are
driven by address bits A22 and A21 of the EBI address bus. The command, address or data
words on the data bus of the NANDFlash device are distinguished by using their address within
the NCSx address space. The chip enable (CE) signal of the device and the ready/busy (R/B)
signals are connected to PIO lines. The CE signal then remains asserted even when NCSx is
not selected, preventing the device from returning to standby mode.
EBI
NWR0_NWE
PIO
PIO
NRD_NOE
NCSx
NCSx/NANDCS
D[7:0]
A[22:21]
NANDWE
NANDOE
Not Connected
NAND Flash Logic
NANDOE
NANDWE
CE
R/B
ALE
CLE
NOE
NWE
AD[7:0]
NAND Flash
NANDOE
NANDWE
AT91SAM9260
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