Техническая Спецификация для Atmel Evaluation Kit for AT32uC3A0512, 32-Bit AVR Microcontroller Atmel ATEVK1105 ATEVK1105
Модели
ATEVK1105
412
AT32UC3A
28.5
Application Example
28.5.1
Hardware Interface
shows an example of SDRAM device connection to the SDRAM Controller using a
32-bit data bus width.
shows an example of SDRAM device connection using a 16-
bit data bus width. It is important to note that these examples are given for a direct connection of
the devices to the SDRAM Controller, without External Bus Interface or PIO Controller
multiplexing.
Figure 28-2.
SDRAM Controller Connections to SDRAM Devices: 32-bit Data Bus Width
Figure 28-3.
SDRAM Controller Connections to SDRAM Devices: 16-bit Data Bus Width
SDRAM
Controller
D0-D31
SDRAMC_A[0-12]
RAS
CAS
SDCK
SDCKE
SDWE
NBS0
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CLK
CKE
WE
DQM
CS
BA0
BA1
BA1
NBS1
NBS2
NBS3
SDCS
D0-D7
D8-D15
BA0
BA1
A10
SDRAMC_A[0-9], SDRAMC_A11
SDRAMC_A10
BA0
BA1
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CLK
CKE
WE
DQM
CS
BA0
BA1
A10
SDRAMC_A[0-9], SDRAMC_A11
SDRAMC_A10
BA0
BA1
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CLK
CKE
WE
DQM
CS
BA0
BA1
D16-D23
D24-D31
A10
SDRAMC_A[0-9], SDRAMC_ A11
SDRAMC_A10
BA0
BA1
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CLK
CKE
WE
DQM
CS
BA0
BA1
A10
SDRAMC_A[0-9], SDRAMC_A11
SDRAMC_A10
BA0
BA1
BA1
NBS0
NBS1
NBS3
NBS2
SDWE
SDWE
SDWE
SDWE
SDRAM
Controller
D0-D31
SDRAMC_A[0-12]
RAS
CAS
SDCK
SDCKE
SDWE
NBS0
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CLK
CKE
WE
DQM
CS
BA0
BA1
BA1
NBS1
SDCS
D0-D7
D8-D15
BA0
BA1
A10
SDRAMC_A[0-9], SDRAMC_A11
SDRAMC_A10
BA0
BA1
2M x 8
SDRAM
D0-D7
A0-A9, A11
RAS
CAS
CLK
CKE
WE
DQM
CS
BA0
BA1
A10
SDRAMC_A[0-9], SDRAMC_A11
SDRAMC_A10
BA0
BA1
NBS0
NBS1
SDWE
SDWE
32058K
AVR32-01/12