ATUC128L4U Atmel Corporation, ATUC128L4U Datasheet - Page 89
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ATUC128L4U
Manufacturer Part Number
ATUC128L4U
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(377 pages)
2.AT32UC3A0128.pdf
(159 pages)
3.ATUC128L4U.pdf
(960 pages)
4.ATUC128L4U.pdf
(92 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATUC128L4U-U
Manufacturer:
ATMEL
Quantity:
3 006
- AT32UC3A0128 PDF datasheet
- AT32UC3A0128 PDF datasheet #2
- ATUC128L4U PDF datasheet #3
- ATUC128L4U PDF datasheet #4
- Current page: 89 of 960
- Download datasheet (15Mb)
8.6.2.7
8.6.2.8
8.6.2.9
32142A–12/2011
Suspend and Wakeup
Detach
Remote wakeup
Once the USB device address is configured, the controller filters the packets to only accept
those targeting the address stored in UADD.
UADD and ADDEN should not be written to simultaneously. They should be written sequentially,
UADD field first.
If UADD or ADDEN is cleared, the default device address 0 is used. UADD and ADDEN are
cleared:
When an idle USB bus state has been detected for 3 ms, the controller sets the Suspend
(SUSP) interrupt bit in UDINT. In this case, the transceiver is suspended, reducing power
consumption.
To further reduce power consumption it is recommended to freeze the USB clock by writing a
one to the Freeze USB Clock (FRZCLK) bit in USBCON when the USB bus is in suspend mode.
The MCU can also enter the idle or frozen sleep mode to further lower power consumption.
To recover from the suspend mode, the user shall wait for the Wakeup (WAKEUP) interrupt bit,
which is set when a non-idle event is detected, and then write a zero to FRZCLK.
As the WAKEUP interrupt bit in UDINT is set when a non-idle event is detected, it can occur
regardless of whether the controller is in the suspend mode or not. The SUSP and WAKEUP
interrupts are thus independent of each other except for that one bit is cleared when the other is
set.
The reset value of the DETACH bit located in the UDCON register, is one.
It is possible to initiate a device re-enumeration simply by writing a one and then a zero to
DETACH.
DETACH acts on the pull-up connections of the DP and DM pads. See
ther details.
The remote wakeup request (also known as upstream resume) is the only request the device
may send on its own initiative. This should be preceded by a DEVICE_REMOTE_WAKEUP
request from the host.
• After all kinds of resets, the USB device address is 0.
• The host starts a SETUP transaction with a SET_ADDRESS(addr) request.
• The user writes this address to the USB Address field (UDCON.UADD), and writes a zero to
• The user sends a zero-length IN packet from the control endpoint.
• The user enables the stored USB device address by writing a one to ADDEN.
• On a hardware reset.
• When the USBC is disabled (USBE written to zero).
• When a USB reset is detected.
• First, the USBC must have detected a “Suspend” state on the bus, i.e. the remote wakeup
the Address Enable bit (UDCON.ADDEN), resulting in the address remaining zero.
request can only be sent after a SUSP interrupt has been set.
ATUC64/128/256L3/4U
“Device mode”
for fur-
89
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