CP2104EK

Part: CP2104-F03-GM — Silicon Labs

Type: Single-Chip USB-to-UART Bridge Controller

Description: A highly-integrated USB-to-UART Bridge Controller providing a simple solution for updating RS-232/RS-485 designs to USB, featuring a USB 2.0 full-speed function controller, integrated transceiver, oscillator, one-time programmable ROM, and asynchronous serial data bus (UART) in a compact 4x4 mm QFN-24 package.

Operating Conditions:

• Supply voltage: 3.0 to 3.6 V (Self-powered), 4.0 to 5.25 V (USB bus powered)
• Operating temperature: -40 to +85 °C
• I/O voltage: 1.8 V to V DD
• Baud rates: 300 bps to 2.0 Mbps

Absolute Maximum Ratings:

• Max supply voltage (V DD or V IO): 4.2 V
• Max total current through V DD, V IO, and GND: 500 mA
• Max output current sunk by RST or any I/O pin: 100 mA
• Max ambient temperature under bias: 125 °C
• Max storage temperature: 150 °C

Key Specs:

• Digital Supply Voltage (V DD): 3.0 to 3.6 V
• Digital Port I/O Supply Voltage (V IO): 1.8 V to V DD
• Supply Current (Normal Operation, V REG Enabled): 17.0 mA (Typ), 18.5 mA (Max)
• Supply Current (Suspended, V REG Enabled): 100 μA (Typ), 200 μA (Max)
• UART Baud Rates: 300 bps to 2.0 Mbps
• Voltage Regulator Output Voltage: 3.3 V (Min), 3.45 V (Typ), 3.6 V (Max) at 1 to 100 mA output current
• Voltage Regulator Input Voltage Range: 3.0 to 5.25 V
• USB Specification: 2.0 compliant; full-speed (12 Mbps)

Features:

• Integrated USB transceiver; no external resistors required
• Integrated clock; no external crystal required
• Integrated 1024-Byte One-Time Programmable ROM for customizable product information
• On-chip power-on reset circuit
• On-chip voltage regulator: 3.45 V output
• All handshaking and modem interface signals for UART
• 576 Byte receive buffer; 576 byte transmit buffer
• Hardware or X-On/X-Off handshaking supported
• Four GPIO signals for status and control
• RS-485 mode with bus transceiver control
• Royalty-free Virtual COM Port (VCP) and USBXpress™ Direct Driver Support

Applications:

• Upgrade of RS-232 legacy devices to USB
• Upgrade of RS-485 legacy devices to USB
• Cellular phone USB interface cable
• PDA USB interface cable
• USB to RS-232 serial adapter

Package:

• RoHS-compliant 24-pin QFN (4x4 mm)

• Upgrade of RS-232 legacy devices to USB
• Upgrade of RS-485 legacy devices to USB
• Cellular phone USB interface cable
• PDA USB interface cable
• USB to RS-232 serial adapter

VDD = 3.0 to 3.6 V, -40 to +85 °C unless otherwise specified.

1. If the device is connected to the USB bus, the USB Pull-up Current should be added to the supply current for total supply current.

2. The USB Pull-up supply current values are calculated values based on USB specifications.

Note: Stresses above those listed may cause permanent damage to the device. This is a stress rating only, and functional operation of the devices at or exceeding the conditions in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.