USB97C242-MN-03

Controllers Overview

The USB97C242-MN-03 is a USB 2.0 Flash Drive Controller manufactured by SMSC, designed to interface SmartMedia and NAND flash devices with the USB 2.0 bus. It operates on a 2.5 Volt low power core with 3.3 Volt I/O featuring 5V input tolerance. The device includes a complete USB 2.0 transceiver, a bi-directional control endpoint, and a double-buffered bi-directional bulk endpoint with a 512-byte buffer. It supports USB Bulk Only Mass Storage compliant bootable BIOS for transfer speeds of 2M–15MB/sec. Internal resources include 12KB SRAM for scratchpad, 768 bytes for program execution, and 48KB internal code space. An internal PLL provides 480MHz sampling and a 30MHz MCU clock.

Controllers Feature Summary

• Complete system solution for interfacing SmartMedia and NAND flash devices to the USB 2.0 bus
• Built-in hardware 1-bit ECC support for data integrity
• Supports firmware upgrade via USB bus when sector-erasable Flash program memory is used
• Includes seven general-purpose I/O pins for LED indicators, button inputs, and power control

Controllers Applications

• USB 2.0 Flash Drive Controllers
• SmartMedia (SM) to USB interfaces
• NAND Flash to USB interfaces
• Bootable BIOS storage solutions

Controllers Procurement Notes

Verify the specific suffix -MN-03 against official SMSC documentation to confirm package type and temperature range. Ensure compatibility with required SmartMedia or NAND flash densities within the supported 2M–15MB/sec performance envelope. Confirm that the 2.5V core and 3.3V I/O voltage levels match the target system design constraints.

Controllers Selection Notes

Select this controller for applications requiring direct integration of SmartMedia or NAND flash media into USB 2.0 host systems. Consider the internal 48KB code space and external memory options for firmware complexity. Evaluate the need for built-in ECC if using NAND flash. Verify that the 30MHz execution speed meets real-time processing requirements for mass storage operations.

Controllers Part Context

The USB97C242 is part of SMSC's USB 2.0 Flash Media Controller family, which also includes variants like the USB97C211. These controllers are designed to provide a cost-effective and compact solution for embedding flash storage in USB peripherals. The USB97C242 specifically targets SmartMedia and NAND flash interfaces, distinguishing it from controllers focused solely on CompactFlash.

Controllers Replacement Considerations

The USB97C211 is a related controller in the same family but may differ in specific interface support or pinout. Verify functional equivalence and pin compatibility before substitution. No other direct drop-in replacements are confirmed in public documentation.