AT32UC3L0256 Atmel Corporation, AT32UC3L0256 Datasheet - Page 331
![no-image](/images/manufacturer_photos/0/0/79/atmel_corporation_sml.jpg)
AT32UC3L0256
Manufacturer Part Number
AT32UC3L0256
Description
Manufacturer
Atmel Corporation
Datasheets
1.AT32UC3A0128.pdf
(377 pages)
2.AT32UC3A0128.pdf
(159 pages)
3.AT32UC3L0128.pdf
(85 pages)
4.AT32UC3L0128.pdf
(852 pages)
Specifications of AT32UC3L0256
Flash (kbytes)
256 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 Speed
No
Usb Interface
No
Spi
5
Twi (i2c)
2
Uart
4
Lin
4
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
Part Number:
AT32UC3L0256-D3HR
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
Company:
Part Number:
AT32UC3L0256-H
Manufacturer:
ATMEL
Quantity:
270
Part Number:
AT32UC3L0256-H
Manufacturer:
ATMEL/爱特梅尔
Quantity:
20 000
- AT32UC3A0128 PDF datasheet
- AT32UC3A0128 PDF datasheet #2
- AT32UC3L0128 PDF datasheet #3
- AT32UC3L0128 PDF datasheet #4
- Current page: 331 of 852
- Download datasheet (13Mb)
17.5.1.1
17.5.2
17.5.3
32145A–12/2011
Measurement
Interrupts
Cautionary note
Note that if clock selected as source for CLK_REF is stopped during a measurement, this will
not be detected by the FREQM. The BUSY bit in the STATUS register will never be cleared, and
the DONE interrupt will never be triggered. If the clock selected as soruce for CLK_REF is
stopped, it will not be possible to change the source for the reference clock as long as the
selected source is not running.
In the Mode Register the Clock Source Selection (CLKSEL) field selects CLK_MSR and the
Number of Reference Clock Cycles (REFNUM) field selects the duration of the measurement.
The duration is given in number of CLK_REF periodes.
Writing a one to the START bit in the Control Register (CTRL) starts the measurement. The
BUSY bit in SR is cleared when the measurement is done.
The result of the measurement can be read from the Value Register (VALUE). The frequency of
the measured clock CLK_MSR is then:
The FREQM has two interrupt sources:
These will generate an interrupt request if the corresponding bit in the Interrupt Mask Register
(IMR) is set. The interrupt sources are ORed together to form one interrupt request. The FREQM
will generate an interrupt request if at least one of the bits in the Interrupt Mask Register (IMR) is
set. Bits in IMR are set by writing a one to the corresponding bit in the Interrupt Enable Register
(IER) and cleared by writing a one to this bit in the Interrupt Disable Register (IDR). The interrupt
request remains active until the corresponding bit in the Interrupt Status Register (ISR) is
cleared by writing a one to this bit in the Interrupt Clear Register (ICR). Because all the interrupt
sources are ORed together, the interrupt request from the FREQM will remain active until all the
bits in ISR are cleared.
• Write a zero to the MODE.REFCEN to disable he clock, without changing the other bits/fields
• Wait until the SR.RCLKBUSY bit reads as zero.
• DONE: A frequency measurement is done
• RCLKRDY: The reference clock is ready
in the Mode register.
f
CLK_MSR
= (VALUE/REFNUM)*f
CLK_REF
AT32UC3L0128/256
331
Related parts for AT32UC3L0256
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![U641B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
![U4082B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
![U4255BM-M](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B-P](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
![TDA4470](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
![ATF22V10B-25PC](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
![AT89C51ED2-IM](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
![AT24C01](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet:
![U6046B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
U6046BREAR WINDOW HEATING TIMER / LONG-TERM TIMER
Manufacturer:
ATMEL Corporation
Datasheet: