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C communications – Matrix Orbital GLC24064 User Manual

Page 16

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2.2.3 I

2

C Communications

The display has I

2

C communications running at 100 Kbps and up to 127 units can exist on a single

communications line. The display I

2

C communication lines are the two middle pins of the power connector.

These are shared with RS-232 and must be turned on. The default I

2

C address is 0x50. The I

2

C data line

operates on 5 volts.

Figure 16: Power Connector

Table 6: Connector Pinout

Pin 4

Ground

Pin 3

SDA (I

2

C data)

Pin 2

SCL (I

2

C clock)

Pin 1

Vdc

The display does not work on I

2

C by default. The modification shown in the Figure below must be

carried out.

Figure 17: I

2

C

I

2

C communication runs at 100 Kbps and supports up to 127 units on a single communications line. The

I

2

C data line operates on 5V CMOS levels.

Matrix Orbital

GLC24064

12

See also other documents in the category Matrix Orbital Hardware: