MCP2120-IP datasheet(22/36 Pages) MICROCHIP

номер детали	MCP2120-IP

подробное описание детали	Infrared Encoder/Decoder

PDF	36 Pages

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производитель	MICROCHIP [Microchip Technology]

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22 / 36 page

MCP2120

DS21618B-page 22

FIGURE 4-8:

TX and TXIR Waveforms

TABLE 4-8:

TX AND TXIR REQUIREMENTS

AC Characteristics

Standard Operating Conditions (unless otherwise specified)

Operating Temperature

–40

°C ≤ TA ≤ +85°C (industrial)

Operating Voltage VDD range is described in Section 4.1 “DC

Characteristics”

Param.

No.

Sym

Characteristic

Min

Typ

Max

Units

Conditions

IR100 TTXBIT

Transmit Baud Rate

Hardware Selection

768

—

768

TOSC BAUD2:BAUD0 = 000

384

—

384

TOSC BAUD2:BAUD0 = 001

192

—

192

TOSC BAUD2:BAUD0 = 010

128

—

128

TOSC BAUD2:BAUD0 = 011

—

TOSC BAUD2:BAUD0 = 100

Software Selection

BAUD2:BAUD0 = 111

768

—

768

TOSC Hex Command = 0x87

384

—

384

TOSC Hex Command = 0x8B

192

—

192

TOSC Hex Command = 0x85

128

—

128

TOSC Hex Command = 0x83

—

TOSC Hex Command = 0x81

IR120 TTXL2TXIRH TX falling edge (

↓) to

TXIR rising edge (

↑) (1)

7TBITCLK

- 8.34 µs

77TBITCLK

+ 8.34 µs

TBITCLK

IR121 TTXIRPW

TXIR pulse width

—

TOSC

IR122 TTXIRP

TXIR bit period (1)

—16

—

TBITCLK

Note 1: TBITCLK = TTXBIT/16

BITCLK

TXIR

IR100

IR121

IR120

Start Bit

Data bit 7

Data bit 6

Data bit 5

Data bit ...

IR122

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