EA uniTFT Series

Pin

Symbol

I/O

Description

1

GND

Ground 0 V

2

VDD

Power Supply 3,3 V

3

RES

I

Reset

intern Pull-Up: (1,3 kΩ)

4

CS

I

SPI: Chip Select

intern Pull-Up: (1 MΩ)

5

MOSI

I

SPI: MOSI

intern Pull-Up: (1 MΩ)

6

MISO

O

SPI: MISO

7

CLK

I

SPI: CLK

intern Pull-Up: (1 MΩ)

8

RxD

I

RS232: Receive Data

intern Pull-Up: (1 MΩ) (Slave)

9

TxD

O

RS232: Transmit Data

(Slave)

10

DE

O

RS485: Transmit Enable

11

SDA

I/O

I²C: Serial Data

internally Pull-Up: (1 MΩ) → with I²C mode an external Pull-Up resistor is needed (recommended: 10 kΩ)

12

SCL

I

I²C: Serial Clock

internally Pull-Up: (1 MΩ) → with I²C mode an external Pull-Up resistor is needed (recommended: 10 kΩ)

13

A/D 0

I

Analogue input 0

14

D-

I/O

USB: Data negativ

Solder bridges need to be closed to use USB interface through primary connector (see I/O Ports))

15

A/D 1

I

Analogue input 1

16

D+

I/O

USB: Data positiv

Solder bridges need to be closed to use USB interface through primary connector (see I/O Ports)

17

I/O 0.0

I/O

I/O 0.0 (Bit 0)

18

VBUS

I

USB: Supply Voltage (5 V)

19

I/O 0.1

I/O

I/O 0.1 (Bit 1)

20

SBUF

TESTMODE

O

I

Low: Data in send buffer

PowerOn Low: Testmode active

intern Pull-Up: (10 kΩ)

21

PWM

O

PWM-output

22

DPROT

I

High: Small-/Shortprotokoll active

Low:  deactivated

intern Pull-Up: (1 MΩ)

23

♫ +

O

Speaker output (8 Ω)

24

♫ -

O

Speaker output (8 Ω)

25

VDD/
VLED

Power Supply 3,3 V

EA uniTFT050-A: connection to pin 2

EA uniTFT070-A and EA uniTFT101-A: separate power supply for backlight only (VLED) with wide range: 3.1 - 9 V

26

GND

Ground 0 V

Pin

Symbol

I/O

Description

27

I/O 1.7

SDA

I/O

I/O

I/O 1.7 (Bit 15)

Port Expander Serial Data

default

Solder bridges need to be set to use individual port expander (see I/O Ports)

28

I/O 1.6

SCL

I/O

O

I/O 1.6 (Bit 14)

Port Expander Serial Clock

default

Solder bridges need to be set to use individual port expander (see I/O Ports)

29

I/O 1.5

INT

I/O

I

I/O 1.5 (Bit 13)

Port Expander Serial Clock

default

Solder bridges need to be set to use individual port expander (see I/O Ports)

30

I/O 1.4

I/O

I/O 1.4 (Bit 12)

31

I/O 1.3

I/O

I/O 1.3 (Bit 11)

32

I/O 1.2

I/O

I/O 1.2 (Bit 10)

33

I/O 1.1

I/O

I/O 1.1 (Bit 9)

34

I/O 1.0

I/O

I/O 1.0 (Bit 8)

35

I/O 0.7

I/O

I/O 0.7 (Bit 7)

36

I/O 0.6

I/O

I/O 0.6 (Bit 6)

37

I/O 0.5

I/O

I/O 0.5 (Bit 5)

38

I/O 0.4

I/O

I/O 0.4 (Bit 4)

39

I/O 0.3

I/O

I/O 0.3 (Bit 3)

40

I/O 0.2

I/O

I/O 0.2 (Bit 2)

41

A/D 3

I

Analogue input 3

42

A/D 2

I

Analogue input 2

43

SCL

O

Master I²C: Serial Clock

internal Pull-Up: (1 MΩ) → I²C bus requires an external Pull-Up resistor (recommended: 10 kΩ)

44

SDA

I/O

Master I²C: Serial Data

internal Pull-Up: (1 MΩ) → I²C bus requires an external Pull-Up resistor (recommended: 10 kΩ

45

TxD

O

Master RS232: Transmit Data

46

RxD

I

Master RS232: Receive Data

intern Pull-Up: (1 MΩ)

47

CLK

O

Master SPI: CLK

48

MISO

I

Master SPI: MISO

49

MOSI

O

Master SPI: MOSI

50

CS

O

Master SPI: Chip Select

51

VDD

Power Supply 3,3 V

52

GND

Ground 0 V