ATSAM3U4CA-CU Atmel, ATSAM3U4CA-CU Datasheet - Page 856
ATSAM3U4CA-CU
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATSAM3U4CA-CU
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
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37.13.16 HSMCI DMA Configuration Register
Name:
Address:
Access:
This register can only be written if the WPEN bit is cleared in
• OFFSET: DMA Write Buffer Offset
This field indicates the number of discarded bytes when the DMA writes the first word of the transfer.
• CHKSIZE: DMA Channel Read and Write Chunk Size
The CHKSIZE field indicates the number of data available when the DMA chunk transfer request is asserted.
• DMAEN: DMA Hardware Handshaking Enable
0 = DMA interface is disabled.
1 = DMA Interface is enabled.
Note:
• ROPT: Read Optimization with padding
0: BLKLEN bytes are moved from the Memory Card to the system memory, two DMA descriptors are used when the trans-
fer size is not a multiple of 4.
1: Ceiling(BLKLEN/4) * 4 bytes are moved from the Memory Card to the system memory, only one DMA descriptor is used.
856
31
23
15
–
–
7
–
To avoid unpredictable behavior, DMA hardware handshaking must be disabled when CPU transfers are performed.
SAM3U Series
Value
0
1
30
22
14
HSMCI_DMA
0x40000050
Read-write
–
–
6
–
29
21
13
–
–
–
5
–
Name
CHKSIZE
1
4
ROPT
28
20
12
–
–
4
“HSMCI Write Protect Mode Register” on page
27
19
11
–
–
–
3
–
1 data available
4 data available
Description
26
18
10
–
–
–
2
–
25
17
–
–
9
–
1
6430D–ATARM–25-Mar-11
OFFSET
858.
DMAEN
24
16
–
–
8
0
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