AT32UC3A464S Atmel Corporation, AT32UC3A464S Datasheet - Page 173

• Manufacturer Part Number: AT32UC3A464S
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A464S

• Flash (kbytes): 64 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
• Ssc: 1
• 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

14.6.6.1
32072G–11/2011
NAND Flash signals
Figure 14-6. NAND Flash Signal Multiplexing on EBI Pins
The address latch enable and command latch enable signals on the NAND Flash device are
driven by address bits ADDR[22] and ADDR[21] of the EBI address bus. The user should note
that any bit on the EBI address bus can also be used for this purpose. The command, address or
data words on the data bus of the NAND Flash device are distinguished by using their address
within the NCSx address space. The chip enable (CE) signal of the device and the ready/busy
(R/B) signals are connected to I/O Controller lines. The CE signal then remains asserted even
when NCSx is not selected, preventing the device from returning to standby mode.
Figure 14-7. NAND Flash Application Example
Note:
The External Bus Interfaces is also able to support 16-bits devices.
SMC
NWR0_NWE
NCS[2]/[3]
Or I/O line
DATA[7:0]
ADDR[22]
ADDR[21]
NANDWE
EBI
NCS[2/3]
NANDOE
NRD
I/O line
EBI
NandFlash
Logic
NANDWE
NANDOE
AD[7:0]
NandFlash
NWE
NOE
ALE
CLE
R/B
CE
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