MCP2140A-I/SO View Datasheet(PDF) - Microchip Technology

Part Name

Description

Manufacturer

MCP2140A-I/SO

IrDA® Standard Protocol Stack Controller With Fixed 9600 Baud Communication Rate

Microchip Technology 

MCP2140A

FIGURE 4-8:

RXPD/RXPDREF WAVEFORMS

BITCLK

RXPD

RXPDREF

Start Bit

IR110A

Data bit 7 Data bit 6 Data bit 5 Data bit ...

IR131A

IR132

IR132

IR132

IR132

IR132

IR132

0

1

0

0

1

0

Start Bit

Data bit 7 Data bit 6 Data bit 5 Data bit ...

RXPD

RXPDREF

IRD160

IRD161

TABLE 4-8: RXPD/RXPDREF REQUIREMENTS

AC Specifications

Electrical 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

IR110A TRXPDBIT Receive Baud Rate

384

IR132 TRXPDP RXPD/RXPDREF bit period (1)

—

IRD06 VRXPDDΔ Quiescent Delta Voltage

20

0

between RXPD and

RXPDREF

IRD06 VRXPDE IR Pulse Detect Delta Voltage

30

1

(RXPD to RXPDREF)

IR133 TRESP Response Time (2)

—

* These parameters characterized but not tested.

—

384

TOSC BAUD = 9600

8

—

TBITCLK

—

—

mV

—

—

mV RXPD signal must cross

RXPDREF signal level

—

600 *

ns

Note 1: TBITCLK = TRXBIT/16.

2: Response time measured with RXPDREF at (VDD - 1.5V)/2, while RXPD transitions from VSS to VDD.

© 2007 Microchip Technology Inc.

DS22050A-page 39

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