MCP2140A-I/SS Microchip Technology, MCP2140A-I/SS Datasheet - Page 52

• Manufacturer Part Number: MCP2140A-I/SS
• Description: IC IRDA CONTROLLR DTE/DCE 20SSOP
• Manufacturer: Microchip Technology

Specifications of MCP2140A-I/SS

• Interface: UART
• Controller Type: IRDA Standard Protocol Stack Controller
• Voltage - Supply: 3 V ~ 5.5 V
• Current - Supply: 2.2mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Supply Voltage Range: 3V To 5.5V
• Power Dissipation Pd: 800mW
• Operating Temperature Range: -40°C To +85°C
• Digital Ic Case Style: SSOP
• No. Of Pins: 20
• Svhc: No SVHC (15-Dec-2010)
• Interface Type: UART
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: MCP2140DM-TMPSNS - BOARD DEMO FOR MCP2140
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

MCP2140
FIGURE C-1:
DS21790A-page 52
Normal Disconnect Mode (NDM)
Discovery
Normal Response Mode (NRM)
Open channel for IAS Queries
(approximately 70ms
(max timeslots - y frames)
between XID commands)
Primary Device
HIGH LEVEL IRCOMM CONNECTION SEQUENCE
Broadcast ID
Finish sending XIDs
Send SNRM Command
(w/ parameters and
connection address)
Send XID Commands
(timeslots n, n+1, ...)
Open channel for data
Send Data or Status
Send Data or Status
Send IAS Queries
Shutdown link
Preliminary
Secondary Device
Confirm channel open for data
(MCP2140 DSR pin driven low)
Send Data or Status
Provide IAS responses
Send Data or Status
No Response to these XIDs
No Response to Broadcast ID
Confirm channel open for IAS
Confirm shutdown
(back to NDM state)
No Response
XID Response in timeslot y,
claiming this timeslot, (MCP2140
always claims timeslot 0)
UA response with parameters
using connect address
(MCP2140)
2003 Microchip Technology Inc.