AT32UC3C1512C Automotive Atmel Corporation, AT32UC3C1512C Automotive Datasheet - Page 308

• Manufacturer Part Number: AT32UC3C1512C Automotive
• Manufacturer: Atmel Corporation

Figure 18-3.
18.6.3
18.6.3.1
18.6.3.2
9166C–AVR-08/11
Connection to External Devices
SMC
Data bus width
Byte write or byte select access
Memory Connections for Six External Devices
NCS[0] - NCS[5]
A[AD_MSB:0]
D[15:0]
NWE
NRD
A data bus width of 8 or 16 bits can be selected for each chip select. This option is controlled by
the Data Bus Width field in the Mode Register (MODE.DBW) for the corresponding chip select.
Figure 18-4 on page 308
page 309
Each chip select with a 16-bit data bus can operate with one of two different types of write
access: byte write or byte select access. This is controlled by the Byte Access Type bit in the
MODE register (MODE.BAT) for the corresponding chip select.
Figure 18-4.
shows how to connect a 512K x 16-bit memory on NCS2.
Memory Connection for an 8-bit Data Bus
SMC
shows how to connect a 512K x 8-bit memory on NCS2.
NCS[2]
A[18:2]
D[7:0]
NWE
NRD
A0
A1
8 or 16
NCS0
NCS1
NCS2
A[AD_MSB:0]
D[15:0] or D[7:0]
Memory Enable
Output Enable
Write Enable
NCS3
Memory Enable
NCS4
Memory Enable
NCS5
Memory Enable
D[7:0]
A[18:2]
Write Enable
Output Enable
Memory Enable
A0
A1
Memory Enable
Memory Enable
AT32UC3C
Figure 18-5 on
308