FT2232C-REEL

Overview

The FT2232C-REEL is a dual-channel USB-to-UART/FIFO bridge IC from FTDI, operating at USB 2.0 Full Speed (12 Mb/s). It features two independently configurable channels supporting UART, FIFO, Bit-Bang, MPSSE, and MCU Host Bus Emulation modes. The device operates on a single 4.35V to 5.25V supply with integrated 3.3V LDO regulation. Each channel supports independent VCCIO levels between 3.0V and 5.25V. Data rates range from 300 baud to 3 MBaud for TTL/RS422/RS485 UARTs, and up to 1 MB/s for FIFO interfaces. It includes a 6MHz oscillator input, internal PLL, and EEPROM interface for configuration.

Feature Summary

• Dual-channel architecture allowing independent configuration of each port as UART or FIFO without external hubs.
• Integrated Multi-Protocol Synchronous Serial Engine (MPSSE) for efficient JTAG and SPI protocol handling.
• Supports enhanced bit-bang modes with accessible RD# and WR# strobes for external logic clocking.
• Includes integrated power-on-reset circuitry and programmable receive buffer timeouts.

Applications

• USB to Dual Port RS232 Converters
• USB JTAG Programming and FPGA Configuration
• Upgrading Legacy Peripheral Designs to USB
• USB Industrial Control Systems

Procurement Notes

Verify the specific reel packaging designation against the manufacturer's current documentation, as suffixes may indicate tape-and-reel variations. Confirm RoHS compliance status directly with the supplier, as historical data indicates potential non-compliance for older batches. Ensure the external EEPROM configuration matches the required VID, PID, and interface mode settings before integration.

Selection Notes

Select this component when dual independent serial or parallel interfaces are required from a single USB connection. It is suitable for designs needing MPSSE capabilities for synchronous protocols like SPI or JTAG. Consider the 48-LD LQFP package constraints and the requirement for an external 6MHz crystal oscillator. Verify that the host system supports USB 2.0 Full Speed controllers compatible with UHCI/OHCI/EHCI standards.

Part Context

The FT2232C represents the third generation of FTDI’s USB UART/FIFO family, combining the functionality of two second-generation BM chips into one device. It serves as a bridge between USB hosts and legacy serial or parallel peripherals, eliminating the need for complex firmware programming by handling the USB protocol internally.

Replacement Considerations

FT2232D: A later generation variant offering similar dual-channel functionality with updated specifications and potentially different pinout or feature sets. Verify compatibility with existing EEPROM configurations and driver support when migrating.