SAM9G45 Atmel Corporation, SAM9G45 Datasheet - Page 261

• Manufacturer Part Number: SAM9G45
• Manufacturer: Atmel Corporation

Specifications of SAM9G45

• Flash (kbytes): 0 Kbytes
• Pin Count: 324
• Max. Operating Frequency: 400 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 160
• Ext Interrupts: 160
• Usb Transceiver: 3
• Usb Speed: Hi-Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 2
• Uart: 5
• Lin: 4
• Ssc: 2
• Ethernet: 1
• Sd / Emmc: 2
• Graphic Lcd: Yes
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 440
• Resistive Touch Screen: Yes
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 64
• Self Program Memory: NO
• External Bus Interface: 2
• Dram Memory: DDR2/LPDDR, SDRAM/LPSDR
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 0.9 to 1.1
• Fpu: No
• Mpu / Mmu: No/Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• Pwm Channels: 4
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

22.7.4
Name:
Access:
Reset:
This register can only be written if the bit WPEN is cleared in
• TRAS: Active to Precharge Delay
Reset Value is 5 cycles.
This field defines the delay between an Activate Command and a Precharge Command in number of cycles. Number of
cycles is between 0 and 15.
• TRCD: Row to Column Delay
Reset Value is 2 cycles.
This field defines the delay between an Activate Command and a Read/Write Command in number of cycles. Number of
cycles is between 0 and 15.
• TWR: Write Recovery Delay
Reset value is 2.
This field defines the Write Recovery Time in number of cycles. Number of cycles is between 1 and 15.
• TRC: Row Cycle Delay
Reset value is 7 cycles.
This field defines the delay between an Activate command and Refresh command in number of cycles. Number of cycles is
between 0 and 15
• TRP: Row Precharge Delay
Reset Value is 2 cycles.
This field defines the delay between a Precharge Command and another command in number of cycles. Number of cycles
is between 0 and 15.
• TRRD Active bankA to Active bankB
Reset value is 2.
This field defines the delay between an Active command in BankA and an active command in bankB in number of cycles.
Number of cycles is between 1 and 15.
6438G–ATARM–19-Apr-11
31
23
15
7
DDRSDRC Timing 0 Parameter Register
30
22
14
DDRSDRC_T0PR
Read-write
See
6
Table 22-9
TMRD
TRRD
TRCD
TRC
29
21
13
5
28
20
12
4
“DDRSDRC Write Protect Mode Register” on page
REDUCE_WRRD
27
19
11
3
26
18
10
2
TRAS
TWR
TRP
TWTR
25
17
9
1
SAM9G45
271.
24
16
8
0
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