SAM9XE512 Atmel Corporation, SAM9XE512 Datasheet - Page 205

• Manufacturer Part Number: SAM9XE512
• Manufacturer: Atmel Corporation

Specifications of SAM9XE512

• Flash (kbytes): 512 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

23.8.2.2
6254C–ATARM–22-Jan-10
Read is Controlled by NCS (READ_MODE = 0)
Figure 23-10. READ_MODE = 1: Data is sampled by SMC before the rising edge of NRD
Figure 23-11
the falling edge of the NCS signal and remains valid until the rising edge of NCS. Data must be
sampled when NCS is raised. In that case, the READ_MODE must be set to 0 (read is controlled
by NCS): the SMC internally samples the data on the rising edge of Master Clock that generates
the rising edge of NCS, whatever the programmed waveform of NRD may be.
Figure 23-11. READ_MODE = 0: Data is sampled by SMC before the rising edge of NCS
NBS0,NBS1,
NBS2,NBS3,
A0, A1
NBS0,NBS1,
NBS2,NBS3,
A0, A1
D[31:0]
A[25:2]
D[31:0]
A[25:2]
MCK
MCK
NRD
NCS
NRD
NCS
shows the typical read cycle of an LCD module. The read data is valid t
AT91SAM9XE128/256/512 Preliminary
t
t
PACC
PACC
Data Sampling
Data Sampling
PACC
after
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