MCP2122

Features:

• Pinout compatible with HSDL-7000
• Compliant with IrDA^® Standard Physical Layer Specification (version 1.3)
• UART to IrDA Standard Encoder/Decoder
- Interfaces with IrDA Standard Compliant Transceiver
• Baud Rates:
- Up to IrDA Standard 115.2 Kbaud Operation
• Transmit/Receive Formats (Bit Width) Supported:
- 1.63s
• Low-power Mode (2 A at 1.8V, +125°C)

Application

Some applications where an IR interface (MCP2122) could be used include:
• Data-Logging/Data Exchange
• System Setup
• System Diagnostic Read Out
• Manufacturing Configuration
• Host Controller Firmware Updates
• System Control




Pinout






Specifications

Parameter NameValueOperating Temperature Range (°C)-40°C to +125°C Xmit/Rec Formats supported (S)1.63Max. Baud Rate115200.0Operating Voltage (V)1.8 - 5.5Device DescriptionInfrared Encoder/Decoder

Absolute Maximum Ratings†
Ambient Temperature under bias............................ 40°C to +125°C
Storage Temperature ............................................. 65°C to +150°C
Voltage on V_DD with respect to V_SS ............................. 0.3V to +6.5V
Voltage onRESET with respect to V_SS ........................... 0.3V to +14V
Voltage on all other pins with respect to V_SS.......0.3V to (V_DD + 0.3V)
Total Power Dissipation (1) ........................................................800 mW
Max. Current out of V_SS pin ........................................................500 mA
Max. Current into V_DD pin ...........................................................500 mA
Input Clamp Current, I_IK (V_I < 0 or V_I > V_DD) ........................... ±20 mA
Output Clamp Current, I_OK (V₀ < 0 or V₀ > V_DD)....................... ±20 mA
Max. Output Current sunk by any Output pin................................25 mA
Max. Output Current sourced by any Output pin............................25 mA

Note 1: Power Dissipation is calculated as follows:
P_DIS = V_DD x {I_DD I_OH} + {(V_DD V_OH) x I_OH} + (V_OL x I_OL)

†NOTICE: Stresses above those listed under "Maximum Ratings" may cause permanent damage to the device. This
is a stress rating only and functional operation of the device at those or any other conditions above those indicated in
the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods
may affect device reliability.

Description

MCP2122 Converts serial data from UART bitstreams to IrDA standard bitstreams (encodes) and from IrDA standard bitstreams to UART bitstreams (decodes). Requires input clock that is 16x needed baud rate.