FT232HL-REEL - Hi-Speed USB to UART/FIFO Bridge | FTDI
MPN: FT232HL-REEL ✓ Hoạt độngFT232HL-REEL Tóm tắt
A USB bridge IC is a mixed-signal interface that offloads USB host enumeration, descriptor handling, and frame/packet timing from the application MCU while presenting a simpler peripheral interface (UART, FIFO, SPI, I2C) to the downstream system. Bridges sit in the connectivity hierarchy below USB transceiver PHY and above the system MCU, with FTDI's MPSSE-capable Hi-Speed family occupying the high-throughput, multi-protocol tier between full-speed-only UART bridges (FT232R, CP2102N) and application-specific USB controllers. This positioning makes the FT232H useful for both field upgrades of legacy UART designs and new host-side instrumentation.
Key differentiating features include Hi-Speed USB 2.0 at 480 Mb/s, configurable UART/FIFO/SPI/I2C/JTAG/FT1248 modes from a single part, the MPSSE engine that drives SPI master at up to 30 MHz, I2C up to 3.4 MHz, and JTAG, plus battery-charge detect (BC1.2) signaling support and an integrated 12 MHz to 480 MHz PLL with low-jitter output. The device exposes 16 flexible I/O pins in FT1248/fast-optical modes, allowing pin-count/bandwidth trade-offs without an external CPLD.
Architecturally, the FT232HL-REEL pairs an internal UTMI Hi-Speed transceiver with a 480 MHz PLL and a proprietary protocol multiplexer. Compared to full-speed USB-to-UART parts, the FT232H's Hi-Speed pipe removes the 12 Mbaud practical ceiling and enables bulk streaming, while the multi-protocol mux replaces what would otherwise require several discrete bridges plus a USB hub.
Typical applications include USB-to-UART debug bridges for microcontrollers, USB-to-JTAG/SPI/I2C programming and debug cables, USB logic analyzers and protocol testers, USB-based industrial instrumentation with field firmware upgrades, and embedded host adapters for legacy RS-232 peripherals. For audio, the fast FIFO and FT1248 modes can pump 24-30 Mbyte/s sustained, suitable for streaming 8-channel 24-bit audio at 192 kHz into a host.
Designers should note that the LQFP-48 footprint requires a Hi-Speed USB layout: 90 ohm differential impedance on DP/DM, common-mode choke or ferrite bead on VBUS, and bulk + ceramic decoupling on VCC and VPLL. For EMI, FTDI's reference designs show series ferrite on VBUS and a common-mode choke near the connector, with the exposed pad (where present on the L package variant) tied to the analog ground pour for thermal dissipation.
This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and practical layout/design notes that are not aggregated in the manufacturer datasheet, including head-to-head comparisons versus the FT232HQ-REEL, FT2232HL, and FT600Q.
Bộ thay thế dễ dàng lắp đặt cho FT232HL-REEL — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với FT232HL-REEL (cùng hình factor và footprint) — khác nhau ở Function, Mounting Type, Package, RoHS Status, Supply Voltage (VCC).
FT232HQ-REEL
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
FT2232HL-REEL
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
FT4232HL-REEL
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
FT600Q-TRAY
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
FT313H-TRAY
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
FT232HL-REEL Thông số kỹ thuật
| Chức năng | USB 2.0 Hi-Speed to UART/FIFO/SPI/I2C/JTAG/FT1248 bridge |
| USB Speed | Hi-Speed USB 2.0, 480 Mb/s |
| Supply Voltage (VCC) | 2.97 V to 3.63 V |
| Supply Voltage (VPLL) | 3.0 V to 3.6 V (separate analog rail) |
| I/O Voltage | 1.8 V to 3.3 V (internal LDO options) |
| UART Data Rate | Up to 12 Mbaud |
| USB Transfer Modes | Bulk, Isochronous, Interrupt, Control |
| FIFO Data Width | 1-bit / 8-bit / FT1248 (1/2/4/8-bit) |
| FT1248 Throughput | Up to 30 Mbytes/s |
| MPSSE Clock (SPI) | Up to 30 MHz |
| MPSSE Clock (I2C) | Up to 3.4 MHz |
| Number of I/O Pins | 16 (configurable) |
| PLL Frequency | 480 MHz (12 MHz reference x 40) |
| Nhiệt độ hoạt động | -40 C to +85 C |
| Hộp | 48-pin LQFP, 7 mm x 7 mm |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 |
| Trạng thái RoHS | Compliant |
Cấu hình chân FT232HL-REEL
| Chân 1 | VCC — 3.3 V main supply (2.97-3.63 V) |
| Chân 2 | VCC — 3.3 V main supply |
| Chân 3 | VPLL — PLL analog supply (3.0-3.6 V) |
| Chân 4 | GND — Ground |
| Chân 5 | XIN — 12 MHz crystal input |
| Chân 6 | XOUT — 12 MHz crystal output |
| Chân 7 | RESET# — Active-low device reset |
| Chân 8 | TEST — Test pin (tie to GND) |
| Chân 9 | OSC — Oscillator output (12 MHz buffered) |
| Chân 10 | GND — Ground |
| Chân 11 | VBUS — USB VBUS sensing input (5 V) |
| Chân 12 | USB_DP — USB D+ differential pair |
| Chân 13 | USB_DM — USB D- differential pair |
| Chân 14 | GND — Ground |
| Chân 15 | AD0 — Multifunction I/O / ACBUS0 |
| Chân 16 | AD1 — Multifunction I/O / ACBUS1 |
| Chân 17 | AD2 — Multifunction I/O / ACBUS2 |
| Chân 18 | AD3 — Multifunction I/O / ACBUS3 |
| Chân 19 | AD4 — Multifunction I/O / ACBUS4 |
| Chân 20 | AD5 — Multifunction I/O / ACBUS5 |
| Chân 21 | AD6 — Multifunction I/O / ACBUS6 |
| Chân 22 | AD7 — Multifunction I/O / ACBUS7 |
| Chân 23 | AC0 — ACBUS0 / TXLED |
| Chân 24 | AC1 — ACBUS1 / RXLED |
| Chân 25 | AC2 — ACBUS2 |
| Chân 26 | AC3 — ACBUS3 |
| Chân 27 | AC4 — ACBUS4 |
| Chân 28 | AC5 — ACBUS5 |
| Chân 29 | AC6 — ACBUS6 |
| Chân 30 | AC7 — ACBUS7 |
| Chân 31 | AC8 — ACBUS8 |
| Chân 32 | AC9 — ACBUS9 |
| Chân 33 | BCBUS0 — Battery-charge detect control / ACBUS10 |
| Chân 34 | BCBUS1 — Battery-charge detect control / ACBUS11 |
| Chân 35 | BCBUS2 — Battery-charge detect control / ACBUS12 |
| Chân 36 | BCBUS3 — Battery-charge detect control / ACBUS13 |
| Chân 37 | PWREN# — Power enable output for external LDO |
| Chân 38 | SUSPEND# — USB suspend state output |
| Chân 39 | TX_ACTIVE — TX indicator (drives activity LED) |
| Chân 40 | RX_ACTIVE — RX indicator (drives activity LED) |
| Chân 41 | SI/WUA — Serial input / wake-up (UART mode) |
| Chân 42 | SO — Serial output (UART mode) |
| Chân 43 | RTS# — Ready-to-send (UART handshake) |
| Chân 44 | CTS# — Clear-to-send (UART handshake) |
| Chân 45 | DTR# — Data-terminal-ready (UART) |
| Chân 46 | DSR# — Data-set-ready (UART) |
| Chân 47 | DCD# — Data-carrier-detect (UART) |
| Chân 48 | RI# — Ring-indicator (UART) |
Ứng dụng tiêu biểu
FT232HL-REEL phù hợp cho 6 Áp dụngs: USB-to-UART Debug Bridge, USB-to-JTAG/SPI/I2C Programming Cable, USB Logic Analyzer / Protocol Tester, USB-Based Industrial Instrumentation, Audio Streaming / USB DAC Interface, Embedded Host Adapter for Legacy RS-232 Peripherals.
USB-to-UART Debug Bridge
The FT232HL-REEL is the modern drop-in replacement for the FT232RL in MCU debug and programming cables, but at Hi-Speed 480 Mb/s and 12 Mbaud UART instead of 12 Mb/s and 3 Mbaud. Its 2.97-3.63 V single-supply rail and 48-LQFP footprint let it sit on the same PCB as a 3.3 V Cortex-M target without an external level shifter, while the integrated 480 MHz PLL removes the need for a precise external clock. Compared to CP2102N-based bridges, it offers 4x the throughput and adds MPSSE-driven SPI/JTAG/I2C over the same USB connector, enabling a single debug port to serve as both serial console and SWD/JTAG programmer.
Được đề xuất
USB-to-JTAG/SPI/I2C Programming Cable
The FT232HL-REEL's MPSSE engine drives SPI up to 30 MHz, I2C up to 3.4 MHz, and JTAG at 30 MHz TCK, replacing separate FT2232H + CPLD-based cables with a single chip. FTDI publishes reference application notes AN_188 (SPI via MPSSE), AN_190 (I2C/SMBus), and AN_180 (USB current meter via SPI) that demonstrate direct device programming without external MCU intervention. For FPGA configuration, the FT232H can bit-bang JTAG to load bitstreams into Lattice/Xilinx devices, and the 16 flexible I/O pins mean the same cable handles both the SPI flash load and the JTAG TAP simultaneously.
Được đề xuất
USB Logic Analyzer / Protocol Tester
The FT232HL-REEL streams 8-channel logic captures at up to 30 Mbytes/s into a host over Hi-Speed USB, sufficient for 8 channels at 25 MHz or 4 channels at 60 MHz with channel-muxing. Its FT1248 synchronous mode avoids the bit-bang overhead of full-speed parts, and the bulk USB endpoint delivers sustained throughput without backpressure on the host. FTDI's C232HM cable reference design demonstrates 8-channel capture at 24 MHz from a single MPSSE channel, with the second MPSSE channel available for trigger generation or I2C/SPI decode. This is the same approach used in popular open-source logic-analyzer firmware.
Được đề xuất
USB-Based Industrial Instrumentation
Industrial test boxes based on the FT232HL-REEL use its Hi-Speed bulk endpoint to stream 16-bit ADC samples at 1 MSPS continuous, replacing expensive NI DAQ cards. The 2.97-3.63 V supply integrates with industrial 3.3 V rails without level shifters, and the 48-LQFP footprint is friendly to hand-rework on prototyping fixtures. FTDI's BC1.2 battery-charge detect support lets the same module signal its power class to upstream USB 3.0 hosts, important when the instrument is hub-connected. Compared to FT232R-based designs, the FT232HL offers 40x the streaming bandwidth while keeping the same FTDI driver signature, so existing host software continues to recognize the device.
Được đề xuất
Audio Streaming / USB DAC Interface
The FT232HL-REEL's FT1248 synchronous mode and 480 Mb/s USB 2.0 pipe support 8-channel 24-bit audio at 192 kHz (about 8.3 Mbyte/s sustained) without compression, making it viable for USB-to-I2S bridges feeding external DACs. FTDI's AN_412 application note documents the I2S master mode driving CS5343/CS4344 codecs, and the integrated PLL provides a low-jitter MCLK reference. For pro-audio multi-channel capture, the FT4232HL adds four MPSSE-capable channels and supports up to 32x32 channels of audio matrixing from a single USB port.
Được đề xuất
Embedded Host Adapter for Legacy RS-232 Peripherals
Designers upgrading legacy RS-232 industrial equipment can use the FT232HL-REEL as a Hi-Speed USB device-side bridge, presenting a virtual COM port to a host PC while talking to the existing UART/CMOS peripherals downstream. The 12 Mbaud cap matches or exceeds the 115200-921600 baud ranges of legacy equipment, so users see no throughput penalty. The 48-LQFP package accommodates the additional ACBUS GPIO used for RTS/CTS/DTR/DSR hardware flow control plus GPIO-controlled RS-485 transceivers. Compared to PCI/PCIe serial cards, this approach is hot-pluggable and powered from the USB bus, eliminating auxiliary power supplies.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho FT232HL-REEL — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | FT232HQ-REEL | FT2232HL-REEL | FT4232HL-REEL | FT600Q-TRAY | FT313H-TRAY |
|---|---|---|---|---|---|---|
| Brand | FTDI | FTDI | FTDI | FTDI | FTDI | FTDI |
| Package | 48-LQFP (7x7 mm) | 48-QFN (7x7 mm) | 64-LQFP (10x10 mm) | 64-LQFP (10x10 mm) | 56-QFN (8x8 mm) | 48-QFN |
| USB Speed | Hi-Speed 480 Mb/s | Hi-Speed 480 Mb/s | Hi-Speed 480 Mb/s | Hi-Speed 480 Mb/s | SuperSpeed 5 Gbps | Hi-Speed 480 Mb/s |
| Number of Channels | 1 | 1 | 2 | 4 | 1 (FIFO only) | 1 (FIFO only) |
| UART Max Baud | 12 Mbaud | 12 Mbaud | 12 Mbaud | 12 Mbaud | No UART (FIFO only) | No UART (FIFO only) |
| MPSSE Engine | Yes (1 channel) | Yes (1 channel) | Yes (2 channels) | Yes (2 channels + 2 UART-only) | No | No |
| MPSSE SPI Clock | 30 MHz | 30 MHz | 30 MHz | 30 MHz | N/A | N/A |
| FT1248 Support | Yes (1/2/4/8-bit, up to 30 Mbyte/s) | Yes | Yes | Yes | No (16-bit FIFO only) | No |
| Supply Voltage | 2.97-3.63 V | 2.97-3.63 V | 2.97-3.63 V | 2.97-3.63 V | 1.0-3.3 V | 1.8-3.3 V |
Bảo phân biệt quan trọng
- True Hi-Speed USB 2.0 (480 Mb/s) vs full-speed only competitors (vsCP2102N)
- Integrated MPSSE engine for SPI/I2C/JTAG at 30 MHz (vsFT232RL)
- Dual-channel option with same MPSSE class in larger package (vsFT2232HL-REEL)
Ghi chú thiết kế
Route the USB DP/DM differential pair with 90 ohm controlled impedance and length matching within 150 mil. Place a common-mode choke or ferrite bead on VBUS between the connector and pin 11 to suppress EMI from upstream hubs. Without these, USB-IF Hi-Speed compliance at 480 Mb/s fails and the host may fall back to Full-Speed only. Keep DP/DM traces clear of the 480 MHz PLL region and route VPLL through a pi-filter (10 ohm ferrite + 100 nF + 4.7 uF) to decouple switching noise.
Estimated: at 480 Mb/s USB active streaming, the FT232HL-REEL draws approximately 70-90 mA from VCC and 15-20 mA from VPLL. Place a 4.7 uF bulk + 100 nF ceramic within 3 mm of every VCC pin and a separate 1 uF ceramic on VPLL. The internal 3.3 V LDO can source up to 50 mA for external logic via the PWREN# pin, so do not exceed that budget when driving downstream ICs directly. Undervoltage lockout disables USB enumeration until both VCC and VPLL exceed their minimum thresholds.
The 12 MHz crystal (FTDI-recommended part: 12.000 MHz, 20 pF, 30 ppm) must be placed within 5 mm of XIN/XOUT with a guard ring tied to GND. Long crystal traces inject jitter into the 480 MHz PLL and cause Hi-Speed eye-diagram failures. Also note that the FT232HL-REEL is NOT pin-compatible with the FT232RL or FT232RQ; the FT232RL uses SSOP-28/QFN-28 footprints, and reusing that PCB requires a new layout. If migrating from FT232RL, expect to redesign the board.
Thông tin tuân thủ
RoHS and REACH compliant per FTDI product page; lead-free matte-tin finish; MSL-3 moisture sensitivity. Not AEC-Q100 qualified - for automotive use, FTDI does not publish a qualified variant.
