SAM9XE256 Atmel Corporation, SAM9XE256 Datasheet - Page 201

• Manufacturer Part Number: SAM9XE256
• Manufacturer: Atmel Corporation

Specifications of SAM9XE256

• Flash (kbytes): 256 Kbytes
• Pin Count: 217
• Max. Operating Frequency: 180 MHz
• Cpu: ARM926
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 96
• Ext Interrupts: 96
• Usb Transceiver: 3
• Usb Speed: Full Speed
• Usb Interface: Host, Device
• Spi: 2
• Twi (i2c): 2
• Uart: 6
• Ssc: 1
• Ethernet: 1
• Sd / Emmc: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: Yes
• Adc Channels: 4
• Adc Resolution (bits): 10
• Adc Speed (ksps): 312
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 32
• Self Program Memory: NO
• External Bus Interface: 1
• Dram Memory: sdram
• Nand Interface: Yes
• Picopower: No
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8/3.3
• Operating Voltage (vcc): 1.65 to 1.95
• Fpu: No
• Mpu / Mmu: No / Yes
• Timers: 6
• Output Compare Channels: 6
• Input Capture Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: No

Table 23-3.
6254C–ATARM–22-Jan-10
Signal Name
Device Type
Byte Access Type (BAT)
NBS0_A0
NWE_NWR0
NBS1_NWR1
NBS2_NWR2_A1
NBS3_NWR3
SMC Multiplexed Signal Translation
Figure 23-7. Connection of 2x16-bit Data Bus on a 32-bit Data Bus (Byte Select Option)
Byte Select
1x32-bit
NBS0
NBS1
NBS2
NBS3
NWE
Byte Select
32-bit Bus
2x16-bit
NBS0
NBS1
NBS2
NBS3
SMC
NWE
AT91SAM9XE128/256/512 Preliminary
D[31:16]
D[15:0]
NCS[3]
A[25:2]
NBS0
NBS1
NBS2
NBS3
NRD
NWE
Byte Write
4 x 8-bit
NWR0
NWR1
NWR2
NWR3
Byte Select
1x16-bit
NBS0
NBS1
NWE
A1
16-bit Bus
A[23:0]
Low Byte Enable
High Byte Enable
Read Enable
Memory Enable
D[15:0]
A[23:0]
Write Enable
D[31:16]
Write Enable
Low Byte Enable
High Byte Enable
Read Enable
Memory Enable
Byte Write
2 x 8-bit
NWR0
NWR1
A1
8-bit Bus
1 x 8-bit
NWE
A0
A1
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