ATSAM4S-EK2 Atmel, ATSAM4S-EK2 Datasheet - Page 13

• Manufacturer Part Number: ATSAM4S-EK2
• Description: Development Boards & Kits - ARM EVAL KIT SAM4S8 & SAM4S16
• Manufacturer: Atmel

Specifications of ATSAM4S-EK2

• Rohs: yes
• Product: Evaluation Kits
• Tool Is For Evaluation Of: SAM4SD32C
• Core: ARM Cortex M4
• Interface Type: RS-232, USB
• Operating Supply Voltage: 5 V

4.3.7.1
4.3.7.2
4.3.8
SAM4S-EK2 User Guide
RS232
RS485
Display Interface
SAM4S-EK2 connects the USART1 bus (including TXD, RXD, RTS, CTS handshake signal controls and
EN command) to the DB9 male connector J5 through the RS232 Transceiver MN5.
Figure 4-6.
As noticed above, the USART1 is shared with the RS485 port, connected to the transceiver MN4, con-
nected to the 3-point connector J4. The design includes selectable jumpers for RS485 bus termination
resistors selection (JP10, JP11, JP12).
Figure 4-7.
The SAM4S-EK2 carries a TFT Transmissive LCD module with touch panel, FTM280C34D. Its inte-
grated driver IC is ILI9325. The LCD display area is 2.8 inches diagonally measured, with a native
resolution of 240 x 320 dots.
USART Evaluation Kit Hardware
RS485
PA 23
PA 22
PA 21_ 232
PA 24
PA 25
+3 V3
PA 21_ 485
PA 25
PA 24
PA 22
+3 V3
R3 1
R3 3
R3 4
R3 5
R3 6
R3 7
+3 V3
DG ND
R2 5
R2 6
R2 7
R2 8
R3 2
47 K
C3 1
4.7 uF
0R
0R
0R
0R
0R
47 K
0R
0R
0R
0R
C3 2
10 0nF
+3 V3
JP 28
He ade r2 n m
DG ND
R2 3
10 K
C3 3
10 0nF
C3 6
10 0nF
DNP
1
2
3
4
RS 485
MN4
ADM3 485 ARZ
21
23
19
10
11
12
RO
RE
DE
DI
3
1
5
7
8
9
USART
MN5
ADM3 312 EARU
VCC
V+
V-
GND
SD
EN
T1 IN
R1 OUT
T2 IN
R2 OUT
T3 IN
R3 OUT
GND
VCC
A
B
8
5
6
7
T1 OUT
T2 OUT
T3 OUT
R1 IN
R2 IN
R3 IN
C1 +
C2 +
C3 +
C1 -
C2 -
C3 -
+3 V3
DG ND
6
20
2
4
24
22
18
15
17
14
16
13
R2 9
12 0R
C3 0
10 0nF
R3 8
JP 11
He ade r2
C3 4
10 0nF
C3 5
10 0nF
C3 7
10 0nF
0R
+3 V3
DG ND
TB D
TB D
R2 4
DNP
R3 0
DNP
JP 10
He ade r2
JP 12
He ade r2
FG ND
DG ND
Evaluation Kit Hardware
1
2
3
1
6
2
7
3
8
4
9
5
FG ND
J4
J5
11176A–ATARM–24-Sep-12
4-6