AT32UC3A3256AU Atmel Corporation, AT32UC3A3256AU Datasheet - Page 221

• Manufacturer Part Number: AT32UC3A3256AU
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A3256AU

• Flash (kbytes): 256 Kbytes
• Pin Count: 144
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 32
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 110
• Ext Interrupts: 110
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Ssc: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 384
• Resistive Touch Screen: No
• Dac Channels: 2
• Dac Resolution (bits): 16
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 128
• Self Program Memory: YES
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 3.0 to 3.6
• Operating Voltage (vcc): 3.0 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 18
• Input Capture Channels: 12
• Pwm Channels: 12
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

16.5.2.1
Table 16-2.
Table 16-3.
Table 16-4.
Notes:
16.6
16.6.1
16.6.2
32072G–11/2011
27
27
27
26
26
26
BA[1:0]
1. M0 is the byte address inside a 16-bit halfword.
Product Dependencies
25
25
25
BA[1:0]
BA[1:0]
I/O Lines
Power Management
16-bit memory data bus width
24
24
24
BA[1:0]
BA[1:0]
BA[1:0]
SDRAM Configuration Mapping: 2K Rows, 256/512/1024/2048 Columns
SDRAM Configuration Mapping: 4K Rows, 256/512/1024/2048 Columns
SDRAM Configuration Mapping: 8K Rows, 256/512/1024/2048 Columns
23
23
23
BA[1:0]
BA[1:0]
BA[1:0]
22
22
22
BA[1:0]
BA[1:0]
In order to use this module, other parts of the system must be configured correctly, as described
below.
The SDRAMC module signals pass through the External Bus Interface (EBI) module where they
are multiplexed. The user must first configure the I/O controller to assign the EBI pins corre-
sponding to SDRAMC signals to their peripheral function. If I/O lines of the EBI corresponding to
SDRAMC signals are not used by the application, they can be used for other purposes by the
I/O Controller.
The SDRAMC must be properly stopped before entering in reset mode, i.e., the user must issue
a Deep power mode command in the Mode (MD) register and wait for the command to be
completed.
21
21
21
BA[1:0]
20
20
20
19
19
19
Row[12:0]
Row[11:0]
18
18
18
Row[10:0]
Row[12:0]
Row[11:0]
17
17
17
Row[10:0]
Row[12:0]
Row[11:0]
16
16
16
Row[10:0]
Row[12:0]
Row[11:0]
15
15
15
CPU Address Line
CPU Address Line
CPU Address Line
Row[10:0]
14
14
14
13
13
13
12
12
12
11
11
11
10
10
10
9
9
9
8
8
8
7
7
7
Column[10:0]
Column[10:0]
Column[10:0]
Column[9:0]
Column[9:0]
Column[9:0]
6
6
6
Column[8:0]
Column[8:0]
Column[8:0]
Column[7:0]
Column[7:0]
Column[7:0]
5
5
5
4
4
4
3
3
3
2
2
2
1
1
1
M0
M0
M0
M0
M0
M0
M0
M0
M0
M0
M0
M0
221
0
0
0