ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 15

• Manufacturer Part Number: ATSAM3U-EK
• Description: KIT EVAL FOR AT91SAM3U CORTEX
• Manufacturer: Atmel
• Type: MCUr

Specifications of ATSAM3U-EK

• Contents: Board
• Processor To Be Evaluated: SAM3U
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3 V
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: SAM3U4E
• Silicon Family Name: SAM3U
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT91SAM3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4.3.6
Figure 4-8.
4.3.7
SAM3U-EK Evaluation Kit User Guide
P A[31:0]
UART
USART
UTXD
URXD
UART
Figure 4-7.
The Universal Asynchronous Receiver Transmitter features a two-pin UART that can be used for com-
munication and trace purposes. It offers an ideal channel for in-situ programming solutions. This UART
is associated with two PDC channels to reduce the processor time on packet handling.
This two-pin UART (TXD and RXD only) is buffered through an RS232 Transceiver MN6 and brought to
the DB9 male connector J3.
The Universal Synchronous/Asynchronous Receiver Transmitter (USART) provides one full duplex uni-
versal synchronous/asynchronous serial link. The data frame format is extensively configurable (data
length, parity, number of stop bits) to support a broad range of serial communication standards. The
USART is also associated with PDC channels for TX/RX data access.
There are 3 USARTs on the SAM3U4E device, SAM3U-EK connects the USART1 bus (including TXD,
RXD, RTS, CTS handshake signals control) to the DB9 male connector J4 through the RS232 Trans-
ceiver MN7.
P A12
P A11
MN1B
MN1B
S AM3U
S AM3U
+3V 3
T P 17
T P 17
S MD
S MD
R 31
R 31
100K
100K
Backup Battery
+3V 3
R 103
R 103
R 33
R 33
V DDB U
R 32
R 32
100K
100K
+3V 3
C 46
C 46
100nF
100nF
0R
0R
0R
0R
139
T P 18
T P 18
S MD
S MD
DG ND
100nF
100nF
C 44
C 44
C 47
C 47
100nF
100nF
V B U
DG ND
16
15
11
12
10
2
6
9
C 21
C 21
1uF
1uF
MN6
MN6
MAX3232C S E
MAX3232C S E
V C C
V +
V -
G ND
T 1IN
R 1OUT
T 2IN
R 2OUT
T 1OUT
T 2OUT
R 1IN
R 2IN
C 1+
C 2+
C 1-
C 2-
J P 4
J P 4
J P
J P
1
3
4
5
14
13
7
8
3
D6
D6
B AT 54C
B AT 54C
C 45
C 45
100nF
100nF
C 48
C 48
100nF
100nF
1
2
+3V 3
1
3
+
3
B T 1
B T 1
K Y 001
K Y 001
Evaluation Kit Hardware
CR1225
CR1225
DG ND
3V
3V
6478E–ATARM–30-Mar-11
1
6
2
7
3
8
4
9
5
J 3
J 3
MALE R IG HT ANG LE D
MALE R IG HT ANG LE D
4
-
2
4
DG ND
4-7