AT32UC3L0256 Atmel Corporation, AT32UC3L0256 Datasheet - Page 438

• Manufacturer Part Number: AT32UC3L0256
• Manufacturer: Atmel Corporation

Specifications of AT32UC3L0256

• Flash (kbytes): 256 Kbytes
• Pin Count: 48
• Max. Operating Frequency: 50 MHz
• Cpu: 32-bit AVR
• # Of Touch Channels: 17
• Hardware Qtouch Acquisition: Yes
• Max I/o Pins: 36
• Ext Interrupts: 36
• Usb Speed: No
• Usb Interface: No
• Spi: 5
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 12
• Adc Speed (ksps): 460
• Analog Comparators: 8
• Resistive Touch Screen: No
• Temp. Sensor: Yes
• Crypto Engine: No
• Sram (kbytes): 16
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.62 to 3.6
• Operating Voltage (vcc): 1.62 to 3.6
• Fpu: No
• Mpu / Mmu: Yes / No
• Timers: 6
• Output Compare Channels: 18
• Input Capture Channels: 12
• Pwm Channels: 35
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

Figure 20-8. Peripheral Deselection
20.7.3.9
32145A–12/2011
NPCS[0..3]
NPCS[0..3]
NPCS[0..3]
NPCS[0..3]
Write TDR
Write TDR
Write TDR
Write TDR
TDRE
TDRE
TDRE
TDRE
Mode fault detection
PCS = A
A
A
A
A
CSAAT = 0 and CSNAAT = 0
CSAAT = 0 and CSNAAT = 0
DLYBCT
DLYBCT
DLYBCT
DLYBCT
Figure 20-8 on page 438
CSRn.CSAAT and CSRn.CSNAAT bits.
The SPI is capable of detecting a mode fault when it is configured in master mode and NPCS0,
MOSI, MISO, and SPCK are configured as open drain through the I/O Controller with either
internal or external pullup resistors. If the I/O Controller does not have open-drain capability,
mode fault detection must be disabled by writing a one to the Mode Fault Detection bit in the MR
DLYBCS
DLYBCS
DLYBCS
PCS = B
PCS=A
A
PCS = A
A
B
shows different peripheral deselection cases and the effect of the
A
PCS = A
A
A
A
A
CSAAT = 0 and CSNAAT = 1
CSAAT = 1 and CSNAAT= 0 / 1
DLYBCT
DLYBCT
DLYBCT
DLYBCT
AT32UC3L0128/256
DLYBCS
DLYBCS
PCS = B
PCS = A
DLYBCS
A
A
PCS = A
DLYBCS
A
A
A
B
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