ATUC64L4U Atmel Corporation, ATUC64L4U Datasheet - Page 97
ATUC64L4U
Manufacturer Part Number
ATUC64L4U
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 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
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Quantity
Price
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Manufacturer:
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Part Number:
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Company:
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Part Number:
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Quantity:
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- AT32UC3A0128 PDF datasheet
- AT32UC3A0128 PDF datasheet #2
- ATUC128L4U PDF datasheet #3
- ATUC128L4U PDF datasheet #4
- Current page: 97 of 960
- Download datasheet (15Mb)
8.6.2.15
32142A–12/2011
RXOUTI
FIFOCON
OUT
Management of OUT endpoints
• Overview
(bank 0)
DATA
set, or if the total byte count is not an integral multiple of EPSIZE, whereby the last packet
should be short.
To enable the multi packet mode, the user should configure the endpoint descriptor
(EPn_PCKSIZE_BK0/1.BYTE_COUNT) to the total size of the multi packet, which should be
larger than the endpoint size (EPSIZE).
Since the EPn_PCKSIZE_BK0/1.MULTI_PACKET_SIZE is incremented (by the transmitted
packet size) after each successful transaction, it should be set to zero when setting up a new
multi packet transfer.
The EPn_PCKSIZE_BK0/1.MULTI_PACKET_SIZE is cleared by hardware when all the bank
contents have been sent. The bank is considered as ready and the TX_IN flag is set when:
The endpoint and its descriptor in RAM must be pre configured, see section
on page 90
When the current bank is full, the RXOUTI and FIFO Control (UECONn.FIFOCON) bits will be
set simultaneously. This triggers an EPnINT interrupt if the Received OUT Data Interrupt Enable
(RXOUTE) bit in UECONn is one.
RXOUTI shall be cleared by software (by writing a one to the Received OUT Data Interrupt Clear
(RXOUTIC) bit) to acknowledge the interrupt. This has no effect on the endpoint FIFO.
The user reads the OUT data from the RAM and clears the FIFOCON bit to free the bank. This
will also cause a switch to the next bank if the OUT endpoint is composed of multiple banks.
RXOUTI should always be cleared before clearing FIFOCON to avoid missing an RXOUTI
event.
Figure 8-11. Example of an OUT endpoint with one data bank
• A short packet (smaller than EPSIZE) has been transmitted.
• A packet has been successfully transmitted, the updated MULTI_PACKET_SIZE equals the
• An extra zero length packet has been automatically sent for the last transfer of the current
BYTE_COUNT, and the AUTO_ZLP field is not set.
bank, if BYTE_COUNT is a multiple of EPSIZE and AUTO_ZLP is set.
HW
ACK
for more details.
SW
read data from CPU
BANK 0
NAK
SW
OUT
ATUC64/128/256L3/4U
(bank 0)
DATA
HW
ACK
”RAM management”
read data from CPU
SW
BANK 0
97
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