AT32UC3A4128S Atmel Corporation, AT32UC3A4128S Datasheet - Page 232

• Manufacturer Part Number: AT32UC3A4128S
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A4128S

• Flash (kbytes): 128 Kbytes
• Pin Count: 100
• Max. Operating Frequency: 66 MHz
• Cpu: 32-bit AVR
• Hardware Qtouch Acquisition: No
• Usb Transceiver: 1
• Usb Speed: Hi-Speed
• Usb Interface: Device + OTG
• Spi: 6
• Twi (i2c): 2
• Uart: 4
• Sd / Emmc: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: AES
• Sram (kbytes): 128
• Self Program Memory: YES
• Dram Memory: No
• 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: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

16.8.1
Register Name:
Access Type:
Offset:
Reset Value:
• MODE: Command Mode
32072G–11/2011
MODE
0
1
2
3
4
5
6
31
23
15
7
-
-
-
-
This field defines the command issued by the SDRAMC when the SDRAM device is accessed.
Mode Register
Description
Normal mode. Any access to the SDRAM is decoded normally.
The SDRAMC issues a “NOP” command when the SDRAM device is accessed regardless of the cycle.
The SDRAMC issues an “All Banks Precharge” command when the SDRAM device is accessed regardless of
the cycle.
The SDRAMC issues a “Load Mode Register” command when the SDRAM device is accessed regardless of the
cycle. This command will load the CR.CAS field into the SDRAM device Mode Register. All the other parameters
of the SDRAM device Mode Register will be set to zero (burst length, burst type, operating mode, write burst
mode...).
The SDRAMC issues an “Auto Refresh” command when the SDRAM device is accessed regardless of the cycle.
Previously, an “All Banks Precharge” command must be issued.
The SDRAMC issues an “Extended Load Mode Register” command when the SDRAM device is accessed
regardless of the cycle. This command will load the LPR.PASR, LPR.DS, and LPR.TCR fields into the SDRAM
device Extended Mode Register. All the other bits of the SDRAM device Extended Mode Register will be set to
zero.
Deep power-down mode. Enters deep power-down mode.
30
22
14
6
-
-
-
-
MR
Read/Write
0x00
0x00000000
29
21
13
5
-
-
-
-
28
20
12
4
-
-
-
-
27
19
11
3
-
-
-
-
26
18
10
2
-
-
-
MODE
25
17
9
1
-
-
-
24
16
8
0
-
-
-
232