ATSAM3U2EA-CU Atmel, ATSAM3U2EA-CU Datasheet - Page 669
ATSAM3U2EA-CU
Manufacturer Part Number
ATSAM3U2EA-CU
Description
IC MCU 32BIT 128KB FLSH 144LFBGA
Manufacturer
Atmel
Series
SAM3Ur
Specifications of ATSAM3U2EA-CU
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-LFBGA
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
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Part Number
Manufacturer
Quantity
Price
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Figure 34-6. Receiver Overrun
34.4.2.5
Figure 34-7. Parity Error
34.4.2.6
Figure 34-8. Receiver Framing Error
6430D–ATARM–25-Mar-11
RXRDY
OVRE
URXD
RXRDY
URXD
PARE
FRAME
RXRDY
URXD
S
Parity Error
Receiver Framing Error
D0
S
S
D1
D0
D0
D2
Each time a character is received, the receiver calculates the parity of the received data bits, in
accordance with the field PAR in UART_MR. It then compares the result with the received parity
bit. If different, the parity error bit PARE in UART_SR is set at the same time the RXRDY is set.
The parity bit is cleared when the control register UART_CR is written with the bit RSTSTA
(Reset Status) at 1. If a new character is received before the reset status command is written,
the PARE bit remains at 1.
When a start bit is detected, it generates a character reception when all the data bits have been
sampled. The stop bit is also sampled and when it is detected at 0, the FRAME (Framing Error)
bit in UART_SR is set at the same time the RXRDY bit is set. The FRAME bit remains high until
the control register UART_CR is written with the bit RSTSTA at 1.
D1
D1
D3
D2
D2
D4
D3
D3
D5
D4
D4
D6
D5
D5
D7
D6
D6
P
Wrong Parity Bit
D7
D7
stop
P
P
S
Detected at 0
stop
Stop Bit
stop
D0
D1
D2
D3
RSTSTA
RSTSTA
D4
D5
SAM3U Series
D6
D7
P
stop
RSTSTA
669
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