SCH3222I-SX-TR

$2.94

Description：LPC IO WITH 8042 KBC, RESET GENE
Series：-

SKU:e7b5d454fc7c Category: Application Specific Microcontrollers Brand: Microchip Technology

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Product introduction

SCH3222I-SX-TR is listed in the Application Specific Microcontrollers range at ChipApex. The manufacturer field lists Microchip Technology. Its product description is LPC IO WITH 8042 KBC, RESET GENE. Review the specifications below when checking this part for your BOM.

Application Specific Microcontrollers specifications for SCH3222I-SX-TR

Description：LPC IO WITH 8042 KBC, RESET GENE
Series：-
Mfr：Microchip Technology
Package：Tape & Reel (TR)
Applications：I/O Controller
Core Processor：8042 Keyboard Controller
Program Memory Type：ROM (2kB)
Controller Series：-
RAM Size：256 x 8
Interface：IrDA, LPC, Parallel, Serial, UART
Number of I/O：23
Voltage - Supply：-
Operating Temperature：-40°C ~ 85°C (TA)
Mounting Type：Surface Mount
Package / Case：84-WFBGA
Supplier Device Package：84-WFBGA (7x7)
Grade：-
Qualification：-

Application Specific Microcontrollers datasheet and documents for SCH3222I-SX-TR

SCH3222I-SX-TR

Application Specific Microcontrollers Overview

The SCH3222I-SX-TR is a Super I/O controller from Microchip Technology, operating at 3.3V with a 5V-tolerant SIO block. It features an LPC interface supporting 19MHz to 33MHz bus frequencies and includes an 8042-compatible keyboard/mouse controller with 2KB program ROM and 256 bytes of data RAM. The device provides four full-function serial ports (NS16C550A compatible) and two additional 4-pin serial ports, alongside an IrDA 1.0 infrared port. It incorporates General Purpose I/O pins, reset generation logic, and a watchdog timer. The component is housed in an 84-ball WFBGA package.

Application Specific Microcontrollers Feature Summary

LPC Interface: Supports bus frequencies of 19MHz to 33MHz with ISA Plug-and-Play compatibility.
Keyboard Controller: 8042 software compatible with 2KB Program ROM and 256 Bytes Data RAM.
Serial Ports: Four full-function UARTs with 16-byte FIFOs supporting up to 1.5M Baud; two additional 4-pin serial ports.
Infrared Port: Multiprotocol IrDA 1.0 compliant interface.

Application Specific Microcontrollers Applications

Motherboard glue logic for PC systems
Industrial control systems requiring low pin count interfaces
Embedded PC applications

Application Specific Microcontrollers Procurement Notes

Verify the suffix 'SX-TR' against official documentation to confirm tape and reel packaging specifications. Ensure the industrial temperature grade (-40°C to +85°C) matches system requirements. Confirm that the 84-ball WFBGA package footprint aligns with the PCB design constraints.

Application Specific Microcontrollers Selection Notes

Select this model when four full-function serial ports are required without parallel port functionality. Verify GPIO availability, as the SCH3222 offers 23 general-purpose I/O pins compared to higher pin counts in other family members. Ensure the system utilizes an LPC bus rather than legacy Super I/O interfaces.

Application Specific Microcontrollers Part Context

This component belongs to the SCH322x family, which serves as a successor to the SCH311x series. Unlike the SCH3227 or SCH3226, the SCH3222 does not include hardware monitoring capabilities or parallel port support. It is designed for cost-sensitive applications where specific peripheral sets like IDE/PCI reset buffers are not needed.