ATUC128L4U Atmel Corporation, ATUC128L4U Datasheet - Page 491

• Manufacturer Part Number: ATUC128L4U
• Manufacturer: Atmel Corporation

Specifications of ATUC128L4U

• Flash (kbytes): 128 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 Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 2
• Uart: 4
• Lin: 4
• Ssc: 1
• 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

21.7.3.1
Figure 21-5. Master Mode Block Diagram
32142A–12/2011
Master mode block diagram
CLK_SPI
ure 21-6 on page 492
Figure 21-5 on page
NPCS0
MISO
MR
TDR
PCS
PCS
MSTR
CSR0..3
CSR0..3
PS
LSB
Baud Rate Generator
491shows a block diagram of the SPI when operating in master mode.
0
1
shows a flow chart describing how transfers are handled.
NCPHA
CPOL
BITS
SCBR
PCSDEC
CSR0..3
Clock
SPI
Shift Register
CSNAAT
CSAAT
TDR
RXFIFOEN
Peripheral
Current
RXFIFOEN
MODFDIS
TD
0
1
0
1
MSB
RDR
4 – Character FIFO
RDR
4 – Character FIFO
TDRE
ATUC64/128/256L3/4U
MODF
RD
NPCS3
NPCS2
NPCS1
NPCS0
MOSI
SPCK
OVRES
RDRF
Fig-
491