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PDF CP2102 Data sheet ( Hoja de datos )
| Número de pieza | CP2102 | |
| Descripción | SINGLE-CHIP USB TO UART BRIDGE | |
| Fabricantes | Silicon Laboratories | |
| Logotipo |  |
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CP2102
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 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
100% pin and software compatible with CP2101
USB Function Controller
USB Specification 2.0 compliant; full-speed (12 Mbps)
USB suspend states supported via 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 1 Mbits
576 Byte receive buffer; 640 byte transmit buffer
Hardware or X-On/X-Off handshaking supported
Event character support
Line break transmission
Virtual COM Port Device Drivers
Works with existing COM Port PC applications
Royalty-free distribution license
Windows 98 SE/2000/XP
MAC OS-9
MAC OS-X
Linux 2.40 and greater
USBXpress™ Direct Driver Support
Example Applications
Upgrade of RS-232 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
Package
Lead free 28-pin MLP (5 x 5 mm)
Ordering Part Number
CP2102-GM
Temperature Range: –40 to +85 °C
7 REGIN
USB
CONNECTOR
VBUS 1
D- 2
D+ 3
GND 4
6 VDD
3 GND
8 VBUS
5 D-
4 D+
D1 D2 D3
IN
Voltage
Regulator
OUT
CP2102
3.3 V
48 MHz
Oscillator
USB
Transceiver
USB Function
Controller
1024B
EEPROM
640B
TX
Buffer
576B
RX
Buffer
UART
Figure 1. Example System Diagram
VDD
RST
9
SUSPEND 12
SUSPEND 11
RI
DCD
DTR
DSR
TXD
RXD
RTS
CTS
2
1
28
27
26
25
24
23
(to external circuitry
for USB suspend
states)
External RS-232
transceiver or
UART circuitry
Rev. 1.0 10/04
Copyright © 2004 by Silicon Laboratories
CP2102
1 page  
CP2102
2. Absolute Maximum Ratings
Table 1. Absolute Maximum Ratings
Parameter
Conditions Min Typ Max Units
Ambient temperature under bias
–55 — 125 °C
Storage Temperature
–65 — 150 °C
Voltage on any I/O Pin or RST with respect to GND
–0.3 — 5.8 V
Voltage on VDD with respect to GND
Maximum Total current through VDD and GND
Maximum output current sunk by RST or any I/O pin
–0.3 — 4.2 V
— — 500 mA
— — 100 mA
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.
3. Global DC Electrical Characteristics
Table 2. Global DC Electrical Characteristics
VDD = 2.7 to 3.6 V, –40 to +85 °C unless otherwise specified.
Parameter
Conditions
Supply Voltage
Supply Current
Supply Current in Suspend
Specified Operating Temperature Range
VDD = 3.3 V
VDD = 3.3 V
Min Typ Max Units
3.0 3.3 3.6
V
— 26 — mA
— 330 —
µA
–40 — +85 °C
Table 3. UART and Suspend I/O DC Electrical Characteristics
VDD = 2.7 to 3.6 V, –40 to +85 °C unless otherwise specified.
Parameters
Conditions
Min Typ
Output High Voltage
Output Low Voltage
Input High Voltage
IOH = –3 mA
IOH = –10 µA
IOH = –10 mA
IOL = 8.5 mA
IOL = 10 µA
IOL = 25 mA
VDD – 0.7
—
VDD – 0.1
—
— VDD – 0.8
——
——
— 1.0
2.0 —
Input Low Voltage
——
Input Leakage Current
— 25
Max
—
—
—
0.6
0.1
—
—
0.8
50
UNITS
V
V
V
V
µA
Rev. 1.0
5
5 Page 
CP2102
5. USB Function Controller and Transceiver
The Universal Serial Bus function controller in the CP2102 is a USB 2.0 compliant full-speed device with integrated
transceiver and on-chip matching and pull-up resistors. The USB function controller manages all data transfers
between the USB and the UART as well as command requests generated by the USB host controller and
commands for controlling the function of the UART.
The USB Suspend and Resume signals are supported for power management of both the CP2102 device as well
as external circuitry. The CP2102 will enter Suspend mode when Suspend signaling is detected on the bus. On
entering Suspend mode, the CP2102 asserts the SUSPEND and SUSPEND signals. SUSPEND and SUSPEND
are also asserted after a CP2102 reset until device configuration during USB Enumeration is complete.
The CP2102 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.
Both SUSPEND and SUSPEND temporarily float high during a CP2102 reset. If this behavior is undesirable, a
strong pulldown (10 kΩ) can be used to ensure SUSPEND remains low during reset. See Figure 6 for other
recommended options.
USB
CONNECTOR
VBUS 1
D- 2
D+ 3
GND 4
C1
1 µF
7 REGIN
C4
4.7 µF
TANT
Option 2
C2
0.1 µF
6 VDD
3 GND
8 VBUS
5 D-
4 D+
D1 D2 D3
Option 3
CP2102
VDD
R1
4.7 kΩ
Option 1
RST
9
SUSPEND 12
SUSPEND
RI
11
R2
10 kΩ
2
DCD
1
DTR
28
DSR
27
TXD
26
RXD
25
RTS
24
CTS
23
(to external circuitry
for USB suspend
states)
Option 4
External RS-232
transceiver or
UART circuitry
Option 1: A 4.7 kΩ pull-up resistor can be added to increase noise immunity.
Option 2: A 4.7 µF tantalum capacitor can be added if powering other devices from the on-chip regulator.
Option 3: Avalanche transient voltage suppression diodes should be added for ESD protection.
Option 3: Use Littlefuse p/n SP0503BAHT or equivalent.
Option 4: 10 kΩ resistor to ground to hold SUSPEND low on initial power on or device reset.
Figure 6. Typical Connection Diagram
Rev. 1.0
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet CP2102.PDF ] | |
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