ATUC64L4U Atmel Corporation, ATUC64L4U Datasheet - Page 923

• 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

Table 35-43. SPI Timing, Master Mode
Note:
32142A–12/2011
Symbol
SPI0
SPI1
SPI2
SPI3
SPI4
SPI5
1. These values are based on simulation and characterization of other AVR microcontrollers manufactured in the same pro-
cess technology. These values are not covered by test limits in production.
Parameter
MISO setup time before SPCK rises
MISO hold time after SPCK rises
SPCK rising to MOSI delay
MISO setup time before SPCK falls
MISO hold time after SPCK falls
SPCK falling to MOSI delay
Figure 35-15. SPI Master Mode with (CPOL= 0 and NCPHA= 1) or (CPOL= 1 and NCPHA= 0)
Maximum SPI Frequency, Master Output
The maximum SPI master output frequency is given by the following formula:
Where
maximum frequency of the SPI pins. Please refer to the I/O Pin Characteristics section for the
maximum frequency of the pins.
Maximum SPI Frequency, Master Input
The maximum SPI master input frequency is given by the following formula:
Where
CPOL and NCPHA.
datasheet for
SPCK
MISO
MOSI
SPIn
SPIn
(1)
is the MOSI delay, SPI2 or SPI5 depending on CPOL and NCPHA.
is the MISO setup and hold time, SPI0 + SPI1 or SPI3 + SPI4 depending on
t
VALID
SPI5
.
t
VALID
is the SPI slave response time. Please refer to the SPI slave
f
SPCKMAX
f
SPCKMAX
SPI3
3.0V to 3.6V,
Conditions
V
capacitor =
maximum
VDDIO
external
40pF
=
from
MIN f
=
----------------------------------- -
SPIn
(
SPI4
PINMAX
33.4 + (t
29.2 + (t
+
ATUC64/128/256L3/4U
1
t
VALID
,
Min
----------- -
SPIn
0
0
CLK_SPI
CLK_SPI
1
)
)/2
)/2
Max
8.63
7.1
f
PINMAX
Units
ns
is the
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