AT32UC3A4256 Atmel Corporation, AT32UC3A4256 Datasheet - Page 171

• Manufacturer Part Number: AT32UC3A4256
• Manufacturer: Atmel Corporation

Specifications of AT32UC3A4256

• Flash (kbytes): 256 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: No
• 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

14.6.5.5
32072G–11/2011
Application example
Table 14-8.
Figure 14-4 on page 171
CFRNW signals are not directly connected to the CompactFlash slot 0, but do control the direc-
tion and the output enable of the buffers between the EBI and the CompactFlash Device. The
timing of the CFCS0 signal is identical to the NCS[4] signal. The CFRNW signal remains valid
throughout the transfer, as does the address bus. The CompactFlash _WAIT signal is con-
nected to the NWAIT input of the Static Memory Controller. For details on these waveforms and
timings, refer to the SMC Section.
Figure 14-4. CompactFlash Application Example with I/O mode
Pins
NRD
NWE0
NWE1
CFRNW
ADDR[10:0]
DATA[15:0]
EBI
Shared CompactFlash Interface Multiplexing
ADDR[22]
ADDR[21]
CFRNW
CFCE1
CFCE2
NCS[4]
NWAIT
NWE0
NWE1
NRD
Pxx
Access to
CompactFlash Device
CompactFlash Signals
CFNOE
CFNWE
CFNIORD
CFRNW
illustrates an example of a CompactFlash application. CFCS0 and
DIR
/OE
/OE
CompactFlash
D[15:0]
_CD1
_CD2
A[10:0]
_REG
_OE
_WE
_IORD
_IOWR
_CE1
_CE2
_WAIT
Connector
171