CP2101 Silicon Laboratories Inc, CP2101 Datasheet

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CP2101

Manufacturer Part Number
CP2101
Description
IC USB-TO-UART BRIDGE 28MLP
Manufacturer
Silicon Laboratories Inc
Datasheet

Specifications of CP2101

Applications
USB
Interface
USB
Voltage - Supply
3 V ~ 3.6 V
Package / Case
28-VQFN Exposed Pad, 28-HVQFN, 28-SQFN, 28-DHVQFN
Mounting Type
Surface Mount
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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Rev. 1.6 1/05
Single-Chip USB to UART Data Transfer
-
-
-
-
-
USB Function Controller
-
-
Asynchronous Serial Data BUS (UART)
-
-
-
-
-
-
CONNECTOR
Integrated USB Transceiver; No External Resistors
Required
Integrated Clock; No External Crystal Required
Integrated 512-Byte EEPROM for Vendor ID,
Product ID, Serial Number, Power Descriptor,
Release Number and Product Description Strings
On-Chip Power-On Reset Circuit
On-Chip Voltage Regulator: 3.3 V Output
USB Specification 2.0 Compliant; Full Speed
(12 Mbps)
USB suspend states supported via SUSPEND pins
All Handshaking and Modem Interface Signals
Data Formats Supported:
Baud Rates: 300 bps to 921.6 kbps
512 Byte Receive Buffer; 512 Byte Transmit Buffer
Hardware or X-On / X-Off Handshaking Supported
Event Character Support
USB
VBUS
GND
D+
D-
Data Bits: 8
Stop Bits: 1
Parity: Odd, Even, No Parity
1
4
7
6
8
5
4
REGIN
VBUS
VDD
GND
D+
D-
Transceiver
Copyright © 2005 by Silicon Laboratories
IN
USB
Regulator
Voltage
OUT
Example System Diagram
EEPROM
512B
Oscillator
48 MHz
3.3 V
USB Function
Controller
Buffer
512B
CP2101
TX
Buffer
512B
RX
Virtual COM Port Device Drivers
-
-
-
-
-
-
-
* (Contact factory for availability)
Example Applications
-
-
-
-
Supply Voltage
-
-
Package
-
Temperature Range: -40 to +85 °C
Works with Existing COM Port PC Applications
Royalty-Free Distribution License
Windows 98SE/2000/XP
MAC OS-9
MAC OS-X
Windows CE*
Linux 2.40 (currently supports binary only)
Upgrade of RS-232 Legacy Devices to USB
Cellular Phone USB Interface Cable
PDA USB Interface Cable
USB to RS-232 Serial Adapter
Self-powered: 3.0 to 3.6 V
USB Bus Powered: 4.0 to 5.25 V
28-pin MLP (5 x 5 mm)
Single-Chip USB to UART Bridge
UART
SUSPEND
SUSPEND
RST
DCD
DTR
DSR
RXD
TXD
RTS
CTS
RI
9
12
11
2
1
28
27
26
25
24
23
VDD
CP2101
External RS-232
(to external circuitry
for USB suspend
states)
UART circuitry
transceiver or
CP2101

CP2101 Summary of contents

Page 1

... EEPROM Buffer Buffer Example System Diagram Copyright © 2005 by Silicon Laboratories CP2101 Single-Chip USB to UART Bridge VDD 9 RST (to external circuitry 12 for USB suspend SUSPEND states) 11 SUSPEND DCD External RS-232 transceiver or 28 DTR UART circuitry 27 DSR UART 26 TXD 25 RXD 24 RTS 23 CTS CP2101 ...

Page 2

... CP2101 2 Rev. 1.6 ...

Page 3

... Table 3.1. Global DC Electrical Characteristics ........................................................ 5 Table 3.2. UART and Suspend I/O DC Electrical Characteristics ............................. 5 4. Pinout and Package Definitions............................................................................. 6 Table 4.1. Pin Definitions for the CP2101 ................................................................. 6 Figure 4.1. MLP-28 Pinout Diagram (Top View) ....................................................... 7 Figure 4.2. MLP-28 Package Drawing ...................................................................... 8 Table 4.2. MLP-28 Package Dimensions .................................................................. 8 Figure 4 ...

Page 4

... System Overview The CP2101 is a highly-integrated USB-to-UART Bridge Controller providing a simple solution for updating RS-232 designs to USB using a minimum of components and PCB space. The CP2101 includes a USB 2.0 full-speed function controller, USB transceiver, oscillator, EEPROM and asynchronous serial data bus (UART) with full modem control signals in a compact MLP-28 package. No other external USB components are required ...

Page 5

... CP2101 3. Global DC Electrical Characteristics Table 3.1. Global DC Electrical Characteristics V = 2.7 to 3.6 V, –40 to +85 °C unless otherwise specified DD Parameter Supply Voltage Supply Current Supply Current in Suspend Specified Operating Temperature Range Table 3.2. UART and Suspend I/O DC Electrical Characteristics V = 2.7 to 3.6 V, -40 to +85 °C unless otherwise specified ...

Page 6

... Data Carrier Detect control input (active low) Ring Indicator control input (active low) This pin is driven high when the CP2101 enters the USB suspend state. This pin is driven low when the CP2101 enters the USB suspend state. These pins should be left unconnected or tied to V Rev. 1.6 CP2101 monitor ...

Page 7

... CP2101 GND DCD GND REGIN 7 Figure 4.1. MLP-28 Pinout Diagram (Top View) 7 CP2101 Top View GND Rev. 1 ...

Page 8

... E — — — ND — NE — R 0.09 AA — BB — CC — DD — Rev. 1.6 CP2101 MM TYP MAX 0.90 1.00 0.02 0.05 0.65 1.00 0.25 — 0.23 0.30 5.00 — 3.15 3.35 5.00 — 3.15 3.35 0.5 — 0.55 0.65 28 — ...

Page 9

... CP2101 0.50 mm 0.20 mm Optional GND Connection L 0.20 mm 0.30 mm 0.50 mm 0.35 mm 0.10 mm 0.85 mm Figure 4.3. Typical MLP-28 Landing Diagram 9 Top View E2 E Rev. 1.6 0.85 mm ...

Page 10

... L 0.20 mm 0.30 mm 0.50 mm 0.35 mm 0.10 mm 0.85 mm Figure 4.4. Typical MLP-28 Solder Mask Top View 0.60 mm 0.30 mm 0. Rev. 1.6 CP2101 0. ...

Page 11

... SUSPEND and SUSPEND are also asserted after a CP2101 reset until device configuration during USB Enumeration is complete The CP2101 exits the Suspend mode when any of the following occur: (1) Resume signaling is detected or generated, (2) a USB Reset signal is detected, or (3) a device reset occurs. On exit of Suspend mode, the SUSPEND and SUSPEND signals are de-asserted ...

Page 12

... Asynchronous Serial Data Bus (UART) Interface The CP2101 UART interface consists of the TX (transmit) and RX (receive) data signals as well as the RTS, CTS, DSR, DTR, DCD and RI control signals. The UART supports RTS/CTS, DSR/DTR and X-On/X- Off handshaking. The UART is programmable to support a variety of data formats and baud rates. The data format and baud rate programmed into the UART is set during COM port configuration on the PC ...

Page 13

... Virtual Com Port Device Drivers The CP2101 Virtual COM Port (VCP) device drivers allow a CP2101-based device to appear to the PC's application software as an additional COM port (in addition to any existing hardware COM ports). Application software running on the PC accesses the CP2101-based device as it would access a standard hardware COM port ...

Page 14

... Voltage Regulator The CP2101 includes an on-chip 5-to-3 V voltage regulator. This allows the CP2101 to be configured as either a USB bus-powered device or a USB self-powered device. These configurations are shown in Figure 9.1 and Figure 9.2. When enabled, the 3 V voltage regulator output appears on the V be used to power external 3V devices ...

Page 15

... Figure 9.2. Configuration 2: USB Self-Powered VBUS From VBUS REGIN From 3 V Power Net Figure 9.3. Configuration 3: USB Self-Powered, Regulator Bypassed 15 CP2101 VBUS Sense Voltage Regulator (REG0 Out V DD CP2101 VBUS Sense Voltage Regulator (REG0 Out V DD Rev. 1.6 Device Power Net Device Power Net ...

Page 16

... Document Change List Revision 1.5 to Revision 1.6 “Virtual COM Port Device Drivers” on page 1 - Added SE after Windows 98 - Changed “Linux 2.40 and greater” to “Linux 2.40 (currently supports binary only)” Rev. 1.6 CP2101 16 ...

Page 17

... CP2101 Notes: 17 Rev. 1.6 ...

Page 18

... Silicon Laboratories products for any such unintended or unauthorized application, Buyer shall indemnify and hold Silicon Laboratories harmless against all claims and damages. Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc. Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders Rev. 1.6 CP2101 18 ...

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