Maxim-integrated 71M6533-DB Manual do Utilizador descarregar pdf (Página 72)

71M6533-DB Demo Board User’s Manual

Page: 72 of 75 REV 3

Name

Type

Pin #

Description

OPT_RX/DIO1

I/O

Multi-use pin, configurable as either Optical Receive Input or general DIO.

When configured as OPT_RX, this pin is a regular UART RX pin. If this pin

is unused it must be configured as an output or tied to V3P3D or

GNDD.

OPT_TX/DIO2

I/O

Multi-use pin, configurable as either Optical LED Transmit Output. When

configured as OPT_TX, this pin is capable of directly driving an LED for

transmitting data in an IR serial interface.

RESET

Chip reset: This input pin is used to reset the chip into a known state. For

normal operation, this pin is pulled low. To reset the chip, this pin should be

pulled high. This pin has an internal 30μA (nominal) current source pull-

down. No external reset circuitry is necessary.

UART input. If this pin is unused it must be configured as an output or

tied to V3P3D or GNDD.

UART output.

TEST

Enables Production Test. This pin must be grounded in normal

operation.

Push button input. Should be at GND when not active. A rising edge sets

the IE_PB flag. It also causes the part to wake up if it is in SLEEP or LCD

mode. PB does not have an internal pull-up or pull-down resistor.

Table 4-4: 71M6533/71M6533H Pin Description Table 3/3

Pin types: P = Power, O = Output, I = Input, I/O = Input/Output

1 2 ... 67 68 69 70 71 72 73 74 75

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