ATSAM3U2EA-AU Atmel, ATSAM3U2EA-AU Datasheet - Page 881
![IC MCU 32BIT 128KB FLASH 144LQFP](/photos/6/72/67244/144l1-lqfp_sml.jpg)
ATSAM3U2EA-AU
Manufacturer Part Number
ATSAM3U2EA-AU
Description
IC MCU 32BIT 128KB FLASH 144LQFP
Manufacturer
Atmel
Series
SAM3Ur
Specifications of ATSAM3U2EA-AU
Core Processor
ARM® Cortex-M3™
Core Size
32-Bit
Speed
96MHz
Connectivity
EBI/EMI, I²C, MMC, SPI, SSC, UART/USART, USB
Peripherals
Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
Number Of I /o
96
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
36K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 1.95 V
Data Converters
A/D 8x10b, 8x12b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
Controller Family/series
SAM3U
No. Of I/o's
96
Ram Memory Size
36KB
Cpu Speed
96MHz
No. Of Timers
3
Rohs Compliant
Yes
Processor Series
ATSAM3x
Core
ARM Cortex M3
Data Bus Width
32 bit
Data Ram Size
36 KB
Interface Type
4xUSART, 2xTWI, 5xSPI, Bus
Maximum Clock Frequency
96 MHz
Number Of Programmable I/os
96
Number Of Timers
8
Operating Supply Voltage
1.62 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
JTRACE-CM3, MDK-ARM, RL-ARM, ULINK2
Development Tools By Supplier
ATSAM3U-EK
Minimum Operating Temperature
- 40 C
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- Current page: 881 of 1171
- Download datasheet (25Mb)
6430D–ATARM–25-Mar-11
6430D–ATARM–25-Mar-11
Method 3: Automatic write of duty-cycle values and automatic trigger of the update
In this mode, the update of the duty cycle values is made automatically by the Peripheral DMA
Controller (PDC). The update of the period value, the dead-time values and the update period
value must be done by writing in their respective update registers with the CPU (respectively
PWM_CPRDUPDx, PWM_DTUPDx and PWM_SCUPUPD).
To trigger the update of the period value and the dead-time values, the user must use the bit
UPDULOCK which allows to update synchronously (at the same PWM period) the synchronous
channels:
After writing the UPDULOCK bit to 1, it is held at this value until the update occurs, then it is read
0.
The update of the duty-cycle values and the update period value is triggered automatically after
an update period.
To configure the automatic update, the user must define a value for the Update Period by the
field UPR in the
troller waits UPR+1 periods of synchronous channels before updating automatically the duty
values and the update period value.
Using the PDC removes processor overhead by reducing its intervention during the transfer.
This significantly reduces the number of clock cycles required for a data transfer, which
improves microcontroller performance.
The PDC must write the duty-cycle values in the synchronous channels index order. For exam-
ple if the channels 0, 1 and 3 are synchronous channels, the PDC must write the duty-cycle of
the channel 0 first, then the duty-cycle of the channel 1, and finally the duty-cycle of the channel
3.
The status of the PDC transfer is reported in the
by the following flags:
Depending on the interrupt mask in the PWM_IMR2 register, an interrupt can be generated by
these flags.
• If the bit UPDULOCK is set to 1, the update is done at the next PWM period of the
• If the UPDULOCK bit is not set to 1, the update is locked and cannot be performed.
• WRDY: this flag is set to 1 when the PWM Controller is ready to receive new duty-cycle
• ENDTX: this flag is set to 1 when a PDC transfer is completed
• TXBUFE: this flag is set to 1 when the PDC buffer is empty (no pending PDC transfers)
• UNRE: this flag is set to 1 when the update period defined by the UPR field has elapsed
synchronous channels.
values and a new update period value. It is reset to 0 when the PWM_ISR2 register is read.
The user can choose to synchronize the WRDY flag and the PDC transfer request with a
comparison match (see
PTRCS in the PWM_SCM register.
while the whole data has not been written by the PDC. It is reset to 0 when the PWM_ISR2
register is read.
“PWM Sync Channels Update Period Register”
Section 38.6.3 ”PWM Comparison
“PWM Interrupt Status Register 2”
Units”), by the fields PTRM and
(PWM_SCUP). The PWM con-
SAM3U Series
SAM3U Series
(PWM_ISR2)
881
881
Related parts for ATSAM3U2EA-AU
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATSAM3U-EK](/photos/9/20/92037/atsam3u-ek_tmb.jpg)
Part Number:
Description:
KIT EVAL FOR AT91SAM3U CORTEX
Manufacturer:
Atmel
Datasheet:
![ATSAM3U](/images/no-image3.png)
Part Number:
Description:
AT91 ARM Thumb-based Microcontrollers
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
![ATSTK600](/photos/9/20/92038/atstk600_tmb.jpg)
Part Number:
Description:
DEV KIT FOR AVR/AVR32
Manufacturer:
Atmel
Datasheet:
![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: