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부품번호 | CP2104 기능 |
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기능 | SINGLE-CHIP USB-TO-UART BRIDGE | ||
제조업체 | Silicon Laboratories | ||
로고 | |||
전체 22 페이지수
CP2104
SINGLE-CHIP USB-TO-UART BRIDGE
Single-Chip USB to UART Data Transfer
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
USB Function Controller
USB Specification 2.0 compliant; full-speed (12 Mbps)
USB Suspend states supported via SUSPEND and
SUSPEND pins
Asynchronous Serial Data BUS (UART)
All handshaking and modem interface signals
Data formats supported:
- Data bits: 5, 6, 7, and 8
- Stop bits: 1, 1.5, and 2
- Parity: odd, even, mark, space, no parity
Baud rates: 300 bps to 2 Mbits
576 byte receive buffer; 576 byte transmit buffer
Hardware or X-On/X-Off handshaking supported
Four GPIO signals for status and control
Configurable I/O (1.8 V to VDD) using VIO pin
Configurable I/O (VDD to 5 V) using external pull-up
RS-485 mode with bus transceiver control
Virtual COM Port Device Drivers
Works with Existing COM Port PC Applications
Royalty-Free Distribution License
Windows 7®/Vista®/XP®/Server 2003®/2000®
Mac® OS-X
Linux®
USBXpress™ Direct Driver Support
Royalty-Free Distribution License
Windows 7/Vista/XP/Server 2003/2000
Windows CE® 6.0, 5.0, and 4.2
Example 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
Supply Voltage
Self-powered: 3.0 to 3.6 V
USB bus powered: 4.0 to 5.25 V
I/O voltage: 1.8 V to VDD
Package
RoHS-compliant 24-pin QFN (4x4 mm)
Ordering Part Number
CP2104-F03-GM
Temperature Range: –40 to +85 °C
External
voltage supply
or direct
connection
to VDD
USB
CONNECTOR
VBUS
D-
D+
GND
Rev. 1.1 11/13
VIO
REGIN
VDD
GND
VBUS
D-
D+
VPP
IN Voltage
Regulator
OUT
CP2104
4
48 MHz
Oscillator
USB
Transceiver
USB Function
Controller
1024B
PROM
576B 576B
TX RX
Buffer Buffer
UART
Figure 1. Example System Diagram
GPIO.0
GPIO.1
GPIO.2
GPIO.3
RST
SUSPEND
SUSPEND
RI
DCD
DTR
DSR
TXD
RXD
RTS
CTS
Copyright © 2013 by Silicon Laboratories
(to external circuitry
for status and
control)
(to external circuitry
for USB suspend
states)
External RS-232
transceiver or
UART circuitry
CP2104
CP2104
1. System Overview
The CP2104 is a highly-integrated USB-to-UART Bridge Controller providing a simple solution for updating
RS-232/RS-485 designs to USB using a minimum of components and PCB space. The CP2104 includes a USB
2.0 full-speed function controller, USB transceiver, oscillator, one-time programmable ROM, and asynchronous
serial data bus (UART) with full modem control signals in a compact 4 x 4 mm QFN-24 package (sometimes called
“MLF” or “MLP”). No other external USB components are required.
The on-chip one-time programmable ROM may be used to customize the USB Vendor ID, Product ID, Product
Description String, Power Descriptor, Device Release Number, Device Serial Number, and GPIO configuration as
desired for OEM applications.
Royalty-free Virtual COM Port (VCP) device drivers provided by Silicon Labs allow a CP2104-based product to
appear as a COM port to PC applications. The CP2104 UART interface implements all RS-232/RS-485 signals,
including control and handshaking signals, so existing system firmware does not need to be modified. The device
also features up to four GPIO signals that can be user-defined for status and control information. Support for I/O
interface voltages down to 1.8 V is provided via a VIO pin. In many existing RS-232 designs, all that is required to
update the design from RS-232 to USB is to replace the RS-232 level-translator with the CP2104. Direct access
driver support is available through the Silicon Labs USBXpress driver set. See www.siliconlabs.com for the latest
application notes and product support information for the CP2104.
An evaluation kit for the CP2104 (Part Number: CP2104EK) is available. It includes a CP2104-based USB-to-
UART/RS-232 evaluation board, a complete set of VCP device drivers, USB and RS-232 cables, and full
documentation. Contact a Silicon Labs sales representatives or go to www.siliconlabs.com to order the CP2104
Evaluation Kit.
4 Rev. 1.1
4페이지 Table 6. GPIO Output Specifications
–40 to +85 °C unless otherwise specified
Parameter
RS-485 Active Time After Stop Bit
TX Toggle Rate
RX Toggle Rate
*Note: Bit-time is calculated as 1 / baud rate.
Conditions
CP2104
Min Typ Max Units
— 1 — bit time*
— 10 —
Hz
— 10 —
Hz
Rev. 1.1
7
7페이지 | |||
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |