EA STARTEDIPTFT4 ELECTRONIC ASSEMBLY, EA STARTEDIPTFT4 Datasheet - Page 5

• Manufacturer Part Number: EA STARTEDIPTFT4
• Description: TFT Displays & Accessories Starter/Demoboard w/Touch USB prog
• Manufacturer: ELECTRONIC ASSEMBLY

Specifications of EA STARTEDIPTFT4

• Attached Touch Screen: Yes
• Background Color: White
• Interface: I2C, SPI, RS-232
• Interface Type: RS-232, I2C, SPI
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: - 20 C
• Operating Temperature Range: - 20 C to + 70 C
• Supply Voltage: 5 V
• Touch Panel: Touch Panel
• Viewing Area (w X H): 53.86 mm x 95.04 mm
• Module Size (w X H X T): 71 mm x 107 mm x 12 mm
• Backlighting: LED
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

ELECTRONIC ASSEMBLY reserves
the right to change specifications
without prior notice. Printing and
typographical
RS-232 INTERFACE
If the display is wired as shown
below, the RS-232 interface is
selected. The pin assignment
is specified in the table on the
right.
The RxD and TxD lines lead
5V (CMOS level) to a
microcontroller, for example,
for direct connection.
If “genuine” RS-232 levels are
required (e.g. for connection to
a PC), an external level
converter (e.g. MAX232) is
required.
Note:
The pins BAUD 0 to 2, ADR 0 to 2, DPOM, DPROT and TEST/SBUF have an internal pullup, which is why only the LO level
(0=GND) is to be actively applied. These pins must be left open for a Hi level.
For RS232 operation (without addressing) the pins ADR 0 to ADR 2 must be left open.
On pin 20 (SBUF) the display indicates with a low level that data is ready to be retrieved from the internal send buffer.
The line can be connected to an interrupt input of the host system, for example.
BAUD RATES
The baud rate is set by means of pins 6, 7 and 8 (baud 0 to 2). The data
format is set permanently to 8 data bits, 1 stop bit, no parity.
RTS/CTS handshake lines are not required. The required control is taken
over by the integrated software protocol (see pages 10 and 11).
RS-485 INTERFACE
With an external converter (e.g. SN75176), the EA eDIP can be connected to a 2-wire RS-485 bus.
Large distances of up to 1200 m can thus be implemented (remote display). Several EA eDIP displays
can be operated on a single RS-485 bus by setting addresses.
We recommend the EA 9777-1RS485 board for development.
Addressing:
- Up to eight hardware addresses (0 to 7) can be set by means of pins ADR0 to ADR2.
- The eDIP with the address 7 is
- The eDIPs with the addresses
- Up to 246 further software
selected and ready to receive
after power-on.
0 to 6 are deselected after
power-on.
addresses can be set by means
of the ‘#KA adr’ command in the
power-on macro (set the eDIP
externally to the address 0).
errors
reserved.
Pin Symbol In/Out Function
10
11
12 EN485
13 DPOM
14
15
16
17 DPROT
18
19
20
1
2
3
4
5
6
7
8
9
RESET
BAUD0
BAUD1
BAUD2
ADR0
ADR1
ADR2
BUZZ
TEST
SBUF
GND
VDD
DNC
RxD
TxD
WP
NC
NC
Out
Out
Out
Out
Out
IN
In
In
In
In
In
In
In
In
In
In
In
Ground Potential for logic (0V)
Power supply for logic (+5V)
do not connect
do not connect
L: Reset
Baud Rate 0
Baud Rate 1
Baud Rate 2
Address 0 for RS-485
Receive Data
Transmit Data
Transmit Enable for RS-485 driver
L: disable PowerOnMacro
do not connect for normal operation
Address 1 for RS-485
Address 2 for RS-485
Buzzer output
L: Disable Smallprotokoll
do not connect for normal operation
L: internal, do not connect
L: Writeprotect for DataFlash
open-drain with internal pullup 20..50k
IN (Power-On) L: Testmode
OUT L: data in sendbuffer
Pinout eDIPTFT43-A: RS-232/RS-485 mode
Pin
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
OUT1 / MO8
OUT2 / MO7
OUT3 / MO6
OUT4 / MO5
OUT5 / MO4
OUT6 / MO3
OUT7 / MO2
OUT8 / MO1
EA eDIPTFT43-A
Baud0 Baud1 Baud2
IN1 / MI8
IN2 / MI7
IN3 / MI6
IN4 / MI5
IN5 / MI4
IN6 / MI3
IN7 / MI2
IN8 / MI1
Symbol
AIN1
AIN2
GND
VDD
1
0
1
0
1
0
1
0
0
1
1
0
0
1
1
0
In/Out Function
Baud Rates
Out
application example
In
In
Ground (0V)
Power supply (+5V)
analogue input 0..5V
DC impedance 1MOhm
8 digital outputs
maximum current:
IOL = IOH = 10mA
alternativ up to 8 matrix
keyboard output lines
(reduces the digital
output lines, see chapter
external keyboard)
8 digital inputs
open-drain with internal
pullup 20..50k
alternativ up to 8 matrix
keyboard input lines
(reduces the digital input
lines, see chapter
external keyboard)
0
0
0
1
1
1
1
0
data format
115200
230400
19200
38400
57600
8,N,1
2400
4800
9600
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