ATUC64L4U Atmel Corporation, ATUC64L4U Datasheet - Page 920

• Manufacturer Part Number: ATUC64L4U
• Manufacturer: Atmel Corporation

Specifications of ATUC64L4U

• Flash (kbytes): 64 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

35.10.3.2
32142A–12/2011
Slave mode
Maximum SPI Frequency, Master Output
The maximum SPI master output frequency is given by the following formula:
Where
the maximum frequency of the SPI pins. Please refer to the I/O Pin Characteristics section for
the maximum frequency of the pins.
to the SPI chapter for a description of this clock.
Maximum SPI Frequency, Master Input
The maximum SPI master input frequency is given by the following formula:
Where
CPOL and NCPHA.
datasheet for
ter for a description of this clock.
Figure 35-11. USART in SPI Slave Mode with (CPOL= 0 and CPHA= 1) or (CPOL= 1 and
SPCK
MISO
MOSI
SPIn
SPIn
is the MISO setup and hold time, USPI0 + USPI1 or USPI3 + USPI4 depending on
is the MOSI delay, USPI2 or USPI5 depending on CPOL and NCPHA.
T
CPHA= 0)
VALID
USPI6
.
USPI7
T
f
CLKSPI
VALID
f
f
SPCKMAX
SPCKMAX
is the SPI slave response time. Please refer to the SPI slave
is the maximum frequency of the CLK_SPI. Refer to the SPI chap-
USPI8
=
=
f
CLKSPI
MIN f
MIN
(
(
----------------------------------- -
SPIn
PINMAX
is the maximum frequency of the CLK_SPI. Refer
+
1
t
,
VALID
----------- -
SPIn
ATUC64/128/256L3/4U
1
,
f
---------------------------- -
f
---------------------------- -
CLKSPI
CLKSPI
9
9
2
2
)
)
f
PINMAX
920
is