AT91FR40162SBPRE Datasheet, PDF (25/214 Pages) ATMEL Corporation – Flash memory in a single compact 121-ball BGA package

AT91FR40162SB
11.4
Data Bus Width
A data bus width of 8 or 16 bits can be selected for each chip select. This option is controlled by
the DBW field in the EBI_CSR (Chip Select Register) for the corresponding chip select.
Figure 11-4 shows how to connect a 512K x 8-bit memory on NCS2.
Figure 11-4. Memory Connection for an 8-bit Data Bus
D0 - D7
D8 - D15
A1 - A18
EBI
A0
NWR1
NWR0
NRD
NCS2
D0 - D7
A1 - A18
A0
Write Enable
Output Enable
Memory Enable
Figure 11-5 shows how to connect a 512K x 16-bit memory on NCS2.
Figure 11-5. Memory Connection for a 16-bit Data Bus
D0 - D7
D8 - D15
A1 - A19
EBI
NLB
NUB
NWE
NOE
NCS2
D0 - D7
D8 - D15
A0 - A18
Low Byte Enable
High Byte Enable
Write Enable
Output Enable
Memory Enable
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6410B–ATARM–12-Jan-10