MCP2140_03 Datasheet, PDF (34/58 Pages) Microchip Technology – IrDA® Standard Protocol Stack Controller With Fixed 9600 Baud Communication Rate

MCP2140
FIGURE 4-7:
UART ASYNCHRONOUS RECEIVE TIMING
Start Bit
IR110
Data Bit
IR110
Data Bit
IR110
Data Bit
IR110
RX pin
IR113
Note: Refer to Figure 4-2 for load conditions.
IR113
TABLE 4-7: UART ASYNCHRONOUS RECEIVE 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
Param.
No.
Sym
Characteristic
Min Typ Max Units
Conditions
IR110 TRXBIT Receive Baud Rate
768 — 768 TOSC BAUD2:BAUD0 = 00
IR111 ERXBIT Receive (RXPD and RXPDREF pin
— — ±1 %
detection) Baud rate Error (into MCP2140)
IR112 ERXBIT Receive (RX pin) Baud rate Error (out of
MCP2140) ⁽¹⁾
— — ±1 %
IR113 TTXRF RX pin rise time and fall time
— — 25 ns
Note 1: This error is not additive to the IR111 parameter.
DS21790A-page 34
Preliminary
 2003 Microchip Technology Inc.