MCP2200-E/SS - USB 2.0 to UART Bridge with GPIO | Microchip
MPN: MCP2200-E/SS ✓ Hoạt độngMCP2200-E/SS Tóm tắt
A USB-to-UART bridge IC (also called a USB serial protocol converter) is a category of interface IC that translates USB signaling on the upstream port to a generic asynchronous serial (UART) interface on the downstream side. This role sits inside the broader taxonomy of interface ICs -> communication controllers -> bus bridges -> USB bridges. Bridges like the MCP2200-E are commonly used to add a USB device port to legacy designs that only expose UART, or to provide a virtual COM port for debugging, provisioning, and field firmware updates without rewriting host-side software.
Key features include a factory default of 8 GPIO pins configurable as inputs or outputs through HID-class control transfers, 256 bytes of integrated user EEPROM accessible over USB, an internal 3.3V LDO that supplies the USB transceiver from a single external 5V (VBUS) source, support for bus-powered or self-powered operation, and full compliance with USB 2.0 full-speed (12 Mbps). The IC integrates a 48 MHz internal oscillator, pull-up resistor on D+, and the 1.5 kΩ USB termination, simplifying board design to a handful of decoupling caps.
Architecturally, the MCP2200-E contains a fixed-function USB 2.0 SIE and a dedicated UART engine, with on-chip RAM buffering transmit and receive FIFOs. The chip implements a vendor HID interface for GPIO and EEPROM access and enumerates as a serial communication class (CDC) device, so no host driver is required on Windows, macOS, or Linux for the CDC portion. Flow control is supported via hardware CTS/RTS pins and an XON/XOFF software mode, and the device presents a standard baud-rate generator from 300 baud up to 1 Mbaud with custom divisors.
Typical applications include adding USB connectivity to legacy RS-232 designs, USB-to-UART cables and dongles, debug consoles for embedded MCUs, industrial sensors and instrumentation exposed to a host PC, and embedded products requiring field-update over USB. Developers also use the GPIO bank for tasks like driving status LEDs, reading push buttons, or multiplexing SPI/I2C peripherals through bit-banging.
When designing with the MCP2200-E, ensure VBUS bulk capacitance stays at or below 10 µF to meet USB 2.0 inrush-current requirements (per Section 7.2.4 of the USB specification). For self-powered designs, an intentional 1 MΩ pull-down resistor on VBUS and a 10 µF bulk cap are typically recommended for proper line-state detection during attach. Decouple VDD with 1 µF and 0.1 µF ceramics placed close to the SSOP pins.
This page synthesises distributor pricing from DigiKey, drop-in alternatives identified from the Microchip same-series cross-reference and competing USB-to-UART bridges, and PCB design notes drawn from the Microchip datasheet and application notes — material you will not find in any single datasheet PDF.
Bộ thay thế dễ dàng lắp đặt cho MCP2200-E/SS — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
MCP2200-I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MCP2200T-I/SS
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MCP2200-E/SS Thông số kỹ thuật
| Chức năng | USB 2.0 full-speed to UART protocol converter |
| USB Speed | Full-speed (12 Mbps) |
| USB Compliance | USB 2.0 |
| UART Interface | TX, RX, RTS, CTS hardware flow control; XON/XOFF software flow |
| GPIO Count | 8 (configurable as input or output) |
| User EEPROM | 256 bytes |
| Integrated USB Termination | Yes (internal pull-up on D+; integrated resistors) |
| Internal Oscillator | 48 MHz |
| Supply Voltage (VBUS) | 5.0 V (USB bus-powered or self-powered) |
| Internal LDO Output | 3.3 V (for USB transceiver only) |
| Nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Hộp | 20-pin SSOP |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant |
| Host Driver Required | No (CDC enumerates as virtual COM port on major OSes) |
Cấu hình chân MCP2200-E/SS
| Chân 1 | GP0 — General-purpose I/O 0 (HID-configurable input or output) |
| Chân 2 | GP1 — General-purpose I/O 1 |
| Chân 3 | GP2 — General-purpose I/O 2 |
| Chân 4 | GP3 — General-purpose I/O 3 |
| Chân 5 | GP4 — General-purpose I/O 4 |
| Chân 6 | GP5 — General-purpose I/O 5 |
| Chân 7 | GP6 — General-purpose I/O 6 |
| Chân 8 | RST — Active-low reset (tie to VDD for always-on) |
| Chân 9 | VSS — Ground |
| Chân 10 | VBUS — USB VBUS supply (5 V input) |
| Chân 11 | VDD — Digital supply for I/O buffers |
| Chân 12 | VUSB3V3 — Decoupling node for internal 3.3 V USB LDO |
| Chân 13 | D- — USB D- line (full-speed, internal termination) |
| Chân 14 | D+ — USB D+ line (full-speed, internal pull-up) |
| Chân 15 | GP7 — General-purpose I/O 7 |
| Chân 16 | CTS — UART clear-to-send hardware flow control input |
| Chân 17 | RTS — UART request-to-send hardware flow control output |
| Chân 18 | RX — UART receive (logic-level input) |
| Chân 19 | TX — UART transmit (logic-level output) |
| Chân 20 | CLKOUT / NC — Optional clock output for external logic (leave open or to NC per datasheet) |
Ứng dụng tiêu biểu
MCP2200-E/SS phù hợp cho 6 Áp dụngs: USB to UART Bridge for MCU Debug Console, Industrial Sensor to USB Data Acquisition, USB Dongle or Cable Replacement, Legacy RS-232 to USB Migration, IoT Gateway USB Provisioning Port, Medical and Laboratory Instrument Debug Interface.
USB to UART Bridge for MCU Debug Console
The MCP2200-E/SS provides a CDC-compliant virtual COM port to an embedded MCU that only exposes a UART, eliminating the need for an external serial chip or an FTDI-style driver install. Its 8 GPIO pins can be repurposed at run-time to drive status LEDs, sense push-buttons, or arbitrate the boot mode of the target MCU, while the 256-byte EEPROM holds board revision strings and serial numbers for field support. Because the chip is bus-powered directly from VBUS, the only required components are decoupling caps and a USB-B or Micro-B receptacle — a typical 5-wire debug port fits on less than 100 mm² of board area. Compared to software-CDC on the MCU itself, the MCP2200-E offloads USB protocol handling and presents standard COM-port IOCTLs that work with any terminal, scope, or Python pyserial client without firmware changes.
Được đề xuất
Industrial Sensor to USB Data Acquisition
In factory automation and process control, the MCP2200-E/SS bridges a sensor UART (RS-232 levels with external transceiver) to a host PC for logging, calibration, and HMIs. The -40 C to +85 C industrial temperature range supports cabinet and outdoor-enclosure deployments, while the integrated 5V-to-3.3V LDO ensures the USB transceiver draws from VBUS without a regulator. The GPIO bank can address end-of-line switches, route analog mux channels, or trigger a digital isolator, turning the bridge into a half-duplex SCADA front-end. With 256 bytes of EEPROM on-chip, calibration coefficients and node IDs can be stored directly on the bridge, simplifying provisioning when a sensor is swapped during maintenance.
Được đề xuất
USB Dongle or Cable Replacement
The MCP2200-E/SS is the silicon foundation of countless USB-to-serial dongles and replacement cables where small BOM, low cost, and zero-driver install are paramount. With internal oscillator, integrated USB termination, and integrated 3.3V LDO, the BOM collapses to one decoupling cap pair plus the USB connector — easy to fit inside a Type-A plug. The HID-class GPIO can drive activity LEDs to confirm enumeration, while the 256-byte EEPROM stores product strings used by the host. CDC enumeration means these cables look like a standard COM port in Tera Term, PuTTY, or any serial terminal without driver files; Field-Update over USB is therefore just a UART bootloader behind the bridge.
Được đề xuất
Legacy RS-232 to USB Migration
Designers upgrading legacy equipment that exposes a 5V UART into modern USB hosts can drop the MCP2200-E/SS directly onto the existing UART lines without rewriting firmware. The chip handles all USB enumeration as a CDC device, presenting a virtual COM port that re-uses existing Windows-legacy serial software. Adding a small MAX3232 or MAX232 level shifter lets the bridge mate directly with true RS-232 ±12V lines from older instruments. The 8 GPIOs are useful as handshake lines or to bring legacy control signals (DTR, RI) into the new design without extra glue logic.
Được đề xuất
IoT Gateway USB Provisioning Port
Wi-Fi and Bluetooth IoT gateways often need a USB-C port for factory provisioning, BLE firmware updates, and field diagnostics, and the MCP2200-E/SS is a drop-in choice. The CDC interface gives production-line test scripts a stable COM port, while GPIO pins can reset the wireless module, select boot mode, or feed an LED indicator. The -40 C to +85 C temperature grade and integrated ESD-tolerant 3.3V LDO make it ideal for enclosures mounted outdoors or in industrial cabinets. The 256-byte user EEPROM holds the device's serial number and hardware revision for asset tracking.
Được đề xuất
Medical and Laboratory Instrument Debug Interface
Laboratory instruments and bench-top analysers benefit from a USB service-port that does not require installing custom drivers, and the CDC-class MCP2200-E/SS enumerates as a virtual COM port on every major OS. The 8 GPIOs can drive front-panel LEDs, read keypad inputs, or assert test-mode lines during calibration in the factory. The 256-byte EEPROM can store calibration date stamps and technician IDs without an extra serial EEPROM on the BOM. Combined with the industrial temperature grade and the integrated 5V-to-3.3V LDO, this bridge simplifies BOM and accelerates IEC 62304 / FDA 21 CFR Part 11 traceability workflows.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MCP2200-E/SS — 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 | MCP2200-I/SS | MCP2200T-I/SS | MCP2200-I/P | CP2102N-A02-GQFN24R | FT232RL |
|---|---|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Silicon Labs | FTDI |
| Package | 20-pin SSOP | 20-pin SSOP (same) | 20-pin SSOP (same, tape-and-reel) | 20-pin PDIP (through-hole) | 24-pin QFN | 28-pin SSOP |
| USB Compliance | USB 2.0 full-speed | USB 2.0 full-speed | USB 2.0 full-speed | USB 2.0 full-speed | USB 2.0 full-speed | USB 2.0 full-speed |
| GPIO Count | 8 | 8 | 8 | 8 | 0 (no user GPIO) | 0 (no user GPIO) |
| User EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | None | External only |
| Operating Temperature | -40 C to +85 C | 0 C to +70 C | 0 C to +70 C | 0 C to +70 C | -40 C to +85 C | -40 C to +85 C |
| Internal Oscillator | 48 MHz integrated | 48 MHz integrated | 48 MHz integrated | 48 MHz integrated | Integrated (no external crystal) | 12 MHz external crystal required |
| Stock Variants | SSOP-20 tube | SSOP-20 tube | SSOP-20 tape-and-reel | PDIP-20 tube | QFN-24 tape-and-reel | SSOP-28 tube |
Bảo phân biệt quan trọng
- Integrated 8-GPIO bank plus 256-byte user EEPROM (vsCP2102N-A02-GQFN24R)
- Zero-cost CDC driver on all major OSes (vsFT232RL)
- Single-rail 5 V bus-powered operation with no external crystal (vsFT232RL)
- -40 C to +85 C industrial temperature range as the lead device (vsMCP2200-I/SS)
Ghi chú thiết kế
VBUS bulk capacitance must not exceed 10 µF to meet USB 2.0 inrush-current requirements (Section 7.2.4). Use a 10 µF ceramic or low-ESR electrolytic on VBUS plus a 0.1 µF ceramic decoupling cap close to the VBUS pin. Decouple VDD with a 1 µF and 0.1 µF capacitor pair, and do not draw current from the internal VUSB3V3 node except for its decoupling cap (it's a decoupling node, not a 3.3 V output).
Route the USB D+/D- pair as a 90-Ω differential microstrip with matched length, and place the ESD protection array (such as USBLC6-2SC6) within 10 mm of the USB connector. Place the decoupling caps for VBUS, VDD, and VUSB3V3 on the same layer within 3 mm of their respective pins; keep the GP and UART traces on inner layers if RFI is a concern. Avoid running digital traces parallel to D+/D- for more than 5 mm.
The MCP2200E enumerates as CDC and provides a virtual COM port without a driver, but GPIO/EEPROM access requires the Microchip MCP2200 Configuration Tool or DLL — design host-side software accordingly. Tie RST to VDD through a 10 kΩ resistor (or directly for always-on), and remember that the CP2102N, FT232RL, and MCP2200 each enumerate differently: the first with SiLabs' VCP driver, the second with FTDI's D2XX or VCP, and the third with the in-box CDC. Mixing chips across PC manufacturers can confuse test operators; document the COM enumeration on the silkscreen.
Thông tin tuân thủ
RoHS and REACH compliant per Microchip product page and distributor data. Not AEC-Q100 qualified (interface IC family). Lead-free and halogen-free per Microchip environmental statement.
