CAM35C44 Ver la hoja de datos (PDF) - SMSC -> Microchip

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CAM35C44

Infrared Communications Controller Chip CameraFR

SMSC -> Microchip 

NAME

Receive Serial Data 2/

Infrared Rx3

Transmit Serial Data

2/Infrared Tx1,2

TOTAL

PINS

1

1

SYMBOL

BUFFER

TYPE

SERIAL PORT INTERFACE (2)

DESCRIPTION

RXD/IRRX

I

This is the receiver input pin for

the UART COM port or an

alternate infrared port receiver

input.

TXD/IRTX

O12PD

This is the transmitter output pin

for the UART COM port or an

alternate infrared port transmitter

output.

Note1

Note2

Note3

Note4

TX and MODE pins drive to VIO level.

TX defaults to zero even during POR.

RX pins are voltage tolerant to VIO level.

All GPIOs are VIO tolerant and back drive protected.

Buffer-Type Summary

The characteristics of the buffer types shown in TABLE 1 are summarized in TABLE 2.

TABLE 2 - CAM35C44 BUFFER-TYPE SUMMARY

BUFFER TYPE

DESCRIPTION

IO12

Input/Output. 12mA sink; 6mA source

O12

Output. 12mA sink; 6mA source

OD12

Open Drain. 12mA sink

O12PD

Output. 12mA sink; 6mA source; 30#A Pulldown @ Tristate

ICLK

Input to Crystal Oscillator Circuit (TTL levels)

OCLK

Output to External Crystal

I

Input TTL Compatible.

IP

Input TTL Compatible with 30#A Pullup

IS

Input with Schmitt Trigger.

11

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