AT91FR40161 ATMEL Corporation, AT91FR40161 Datasheet - Page 23

• Manufacturer Part Number: AT91FR40161
• Description: The AT91FR40161 Features 136 K Bytes of On-chip SRAM, 2M Bytes of Flash, an External Bus Interface, a 3-channel Timer/Counter, 2 ...
• Manufacturer: ATMEL Corporation

Data Bus Width
1354D–ATARM–08/02
A data bus width of 8 or 16 bits can be selected for each chip select. This option is con-
trolled by the DBW field in the EBI_CSR (Chip Select Register) for the corresponding
chip select.
Figure 9 shows how to connect a 512K x 8-bit memory on NCS2.
Figure 9. Memory Connection for an 8-bit Data Bus
Figure 10 shows how to connect a 512K x 16-bit memory on NCS2.
Figure 10. Memory Connection for a 16-bit Data Bus
EBI
EBI
D8 - D15
A1 - A19
D0 - D7
D8 - D15
A1 - A18
D0 - D7
NCS2
NWE
NWR1
NWR0
NUB
NOE
NLB
NCS2
NRD
A0
D0 - D7
D8 - D15
A0 - A18
Low Byte Enable
High Byte Enable
Write Enable
Output Enable
Memory Enable
AT91X40 Series
D0 - D7
A1 - A18
A0
Write Enable
Output Enable
Memory Enable
23