MCP2155_13 datasheet(34/52 Pages) MICROCHIP

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MCP2155

DS21690B-page 34

Preliminary

 2001-2013 Microchip Technology Inc.

FIGURE 4-6:

UART ASYNCHRONOUS TRANSMISSION WAVEFORM

TABLE 4-6:

UART ASYNCHRONOUS TRANSMISSION 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

Param.

No.

Sym

Characteristic

Min

Typ

Max

Units

Conditions

IR100

TTXBIT

Transmit Baud rate

1152

—

1152

TOSC

BAUD2:BAUD0 = 00

576

—

576

TOSC

BAUD2:BAUD0 = 01

192

—

192

TOSC

BAUD2:BAUD0 = 10

—

TOSC

BAUD2:BAUD0 = 11

IR101

ETXBIT Transmit (TX pin) Baud rate

Error (into MCP2155)

——

± 2

IR102 ETXIRBIT Transmit (TXIR pin) Baud rate

Error (out of MCP2155) (1)

——

± 1

IR103

TTXRF TX pin rise time and fall time

—

Note 1: This error is not additive to IR101 parameter.

Note:

Refer to Figure 4-2 for load conditions.

IR103

TX pin

IR100

IR103

IR100

Start Bit

Data Bit

21690B.book Page 34 Thursday, January 10, 2013 1:06 PM

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