at91cap7e ATMEL Corporation, at91cap7e Datasheet - Page 128

• Manufacturer Part Number: at91cap7e
• Description: Customizable Microcontroller
• Manufacturer: ATMEL Corporation

Figure 20-6. NAND Flash Signal Multiplexing on EBI Pins
128
SMC
AT91CAP7E
NWR0_NWE
NCS6
NCS7
NCS3
NRD
The address latch enable and command latch enable signals on the NAND Flash device are
driven by address bits A22 and A21 of the EBI address bus. The user should note that any bit on
the EBI address bus can also be used for this purpose. The command, address or data words
on the data bus of the NAND Flash device are distinguished by using their address within the
NCS3 address space. The chip enable (CE) signal of the device and the ready/busy (R/B) sig-
nals are connected to PIO lines. The CE signal then remains asserted even when NCS3 is not
selected, preventing the device from returning to standby mode.
NAND Flash Logic
NANDOE
NANDWE
MUX Logic
CS3A
CS3A
NCS6_NANDOE
NCS7_NANDWE
8549A–CAP–10/08