Maxim-integrated 71M6533-DB Manual de usuario descargar pdf (Pagina 48)

71M6533-DB Demo Board User’s Manual

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Figure 2-10: EEPROM Circuit

2.4.5 LCD

The 71M6533 has an on-chip LCD controller capable of controlling static or multiplexed LCDs. Figure 2-11

shows the basic connection for LCDs. Note that the LCD module itself has no power connection.

Figure 2-11: LCD Connections

2.4.6 OPTICAL INTERFACE

The 71M6533 IC is equipped with two pins supporting the optical interface: OPT_TX and OPT_RX. The

OPT_TX pin can be used to drive a visual or IR light LED with up to 20mA, a series resistor (R

in Figure 2-12)

helps limiting the current). The OPT_RX pin can be connected to the collector of a photo-transistor, as shown in

Figure 2-12.

DIO4

DIO5

71M6533

EEPROM

SCL

SDA

V3P3D

10kΩ

DIO4

DIO5

71M6533

EEPROM

SCL

SDA

V3P3D

10kΩ

segments

71M6533

LCD

commons

segments

71M6533

LCD

commons

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Maxim-integrated 71M6533-DB Manual de usuario Pagina 48