ATSAM3U4CA-CU Atmel, ATSAM3U4CA-CU Datasheet - Page 358

• Manufacturer Part Number: ATSAM3U4CA-CU
• Description: IC MCU 32BIT 256KB FLSH 100TFBGA
• Manufacturer: Atmel
• Series: SAM3Ur

Specifications of ATSAM3U4CA-CU

• Core Processor: ARM® Cortex-M3™
• Core Size: 32-Bit
• Speed: 96MHz
• Connectivity: EBI/EMI, I²C, MMC, SPI, SSC, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
• Number Of I /o: 57
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 52K x 8
• Voltage - Supply (vcc/vdd): 1.65 V ~ 1.95 V
• Data Converters: A/D 4x10b, 4x12b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 100-TFBGA
• Processor Series: ATSAM3x
• Core: ARM Cortex M3
• Data Bus Width: 32 bit
• Data Ram Size: 52 KB
• Interface Type: 3xUSART, TWI, 4xSPI, Bus
• Maximum Clock Frequency: 96 MHz
• Number Of Programmable I/os: 57
• Number Of Timers: 8
• Operating Supply Voltage: 1.62 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: JTRACE-CM3, MDK-ARM, RL-ARM, ULINK2
• Development Tools By Supplier: ATSAM3U-EK
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

25.9
25.9.1
25.9.2
Figure 25-4.
Figure 25-5.
25.9.2.1
358
358
Connection to External Devices
SAM3U Series
SAM3U Series
Data Bus Width
Byte Write or Byte Select Access
Byte Write Access
Memory Connection for an 8-bit Data Bus
Memory Connection for a 16-bit Data Bus
A data bus width of 8 or 16 bits can be selected for each chip select. This option is controlled by
the field DBW in SMC_MODE (Mode Register) for the corresponding chip select.
Figure 25-4
connect a 512K x 16-bit memory on NCS2.
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 BAT field of the SMC_MODE
register for the corresponding chip select.
Byte write access supports one byte write signal per byte of the data bus and a single read
signal.
Note that the SMC does not allow boot in Byte Write Access mode.
• For 16-bit devices: the SMC provides NWR0 and NWR1 write signals for respectively, byte0
(lower byte) and byte1 (upper byte) of a 16-bit bus. One single read signal (NRD) is provided.
Byte Write Access is used to connect 2 x 8-bit devices as a 16-bit memory.
SMC
SMC
shows how to connect a 512K x 8-bit memory on NCS2.
D[15:0]
NCS[2]
A[19:2]
NBS0
NBS1
NWE
A[18:2]
NCS[2]
NRD
D[7:0]
NWE
A1
NRD
A0
A1
D[7:0]
A[18:2]
Write Enable
Output Enable
Memory Enable
D[15:0]
A[18:1]
A[0]
Low Byte Enable
High Byte Enable
Write Enable
Output Enable
Memory Enable
A0
A1
Figure 25-5
6430D–ATARM–25-Mar-11
6430D–ATARM–25-Mar-11
shows how to