Datasheet

MCP2120
DS21618B-page 24 © 2007 Microchip Technology Inc.
FIGURE 4-10: Command Mode: TX and RX Waveforms
TABLE 4-10: TX AND TXIR REQUIREMENTS
AC Characteristics
Standard Operating Conditions (unless otherwise specified)
Operating Temperature –40°C ≤ T
A ≤ +85°C (industrial)
Operating Voltage VDD range is described in Section 4.1
“DC Characteristics”
Param.
No.
Sym Characteristic Min Typ Max Units Conditions
IR140A B
TX Transmit Baud Rate 16 — 16 TBITCLK
IR140B BRX Receive Baud Rate 16 — 16 TBITCLK
IR141 TTXE2RXE TX edge to RX edge (delay) 5.5 8 10.5 TBITCLK
IR142 TRXP2TXS Delay from RX Stop bit complete
to TX Start bit (new baud rate)
——0TOSC
BITCLK
TX
Start Bit Data bit 7 Data bit 6 Data bit ... Stop bit
IR140B IR140B IR140B IR140B IR140B IR140B
RX
IR140A
IR140A
IR140A
IR141
IR141
IR141
IR141
IR141
IR141
IR141
IR140A
IR140A
IR140A
Start Bit Data bit 7
IR142
(new Baud rate)