SMSC has introduced a family of pin compatible system controller hub chips designed to enable system design engineers to standardize on a single part across a range of applications with similar characteristics, according to the company.
The family members, designated as SCH3112, SCH3114, and SCH3116, offer up to six UARTs, eliminating the need for two separate I/O devices or discrete UART ICs. An increased number of serial ports addresses board constraint issues and provides opportunities for bill-of-material cost reductions. SMSC claims that the new embedded I/O controllers provide up to a 70 percent savings in board space thanks to space-efficient 128-pin VTQFP packaging.
The integration of reset generators is also said to reduce system costs. By having this feature integrated into the embedded I/O controller, SMSC's reset generator implementation allows for variable pulse widths and incorporates a watchdog timer and critical temperature trigger that provides the ability to work across multiple platforms with different system requirements.
Features of the SCH3112, SCH3114, SCH3116 controllers include:
- Industrial-temperature rating (-40°C to +85°C)
- Up to 6 16C550 serial ports with data rates up to 1.5Mbps and RS-485 auto direction control mode
- Thermal sensing with 1.5°C accuracy
- Programmable automatic fan control based on multiple temperature zones
- Resume and main power reset generator with watchdog timer and critical temperature trigger
- Thermtrip signal for overtemperature indication
- 40 General Purpose I/O pins (6 with VID compatible inputs)
- Legacy I/O connectivity
- 128-pin VTQFP package
Samples of the SCH3112, SCH3114 and the SCH3116 are available now with production quantities available in the fourth quarter of this year. Pricing will start at $6.30, $8.10 and $9.90 per unit, respectively in 10K quantities.