CP2112-F02-GM Datasheet CP2112-F02-GMR, CP2112-F02-GM | P4-P6

CP2112

4 Rev. 1.2

1. System Overview

The CP2112 is a highly-integrated HID USB-to-SMBus Bridge providing a simple solution for controlling SMBus

slave devices with USB and using a minimum of components and PCB space. The CP2112 includes a USB 2.0

full-speed function controller, USB transceiver, oscillator, and a one-time programmable ROM in a compact

4 x 4 mm QFN-24 package (sometimes called “MLF” or “MLP”).

The on-chip, one-time programmable ROM provides the option to customize the USB Vendor ID, Product ID,

Manufacturer Product String, Product Description String, Power Descriptor, Device Release Number, and Device

Serial Number as desired for OEM applications.

The CP2112 uses the standard USB HID device class, which is natively supported by most operating systems. A

custom driver does not need to be installed for this device. Windows applications communicate with the CP2112

through a Windows DLL, which is provided by Silicon Labs. The interface specification for the CP2112 is also

available to enable development of an API for any operating system that supports HID.

The CP2112 SMBus interface includes the SDA and SCL signals needed for SMBus communication and is

configurable. The configurable options include the clock speed, read/write timeouts, retry counter timeout, SCL low

timeouts, and a 7-bit device address. The CP2112 will only ACK the 7-bit device address assigned to it but will not

respond to any read/write requests. External pull-up resistors are needed for the SCL and SDA signals.

The device also features a total of eight GPIO signals. The GPIO signals are controlled through USB and can be

configured as Input/Output and Open-Drain/Push-Pull. Three of the GPIO signals support alternate features

including a configurable clock output (48 MHz to 94 kHz) and TX and RX LED toggle. Support for I/O interface

voltages down to 1.8 V is provided via a V

pin.

An evaluation kit for the CP2112 (Part Number: CP2112EK) is available. It includes a CP2112-based HID USB-to-

SMBus evaluation board, Windows DLL and test application, USB cable, and full documentation. Go to

www.silabs.com for the latest application notes and product support information for the CP2112. Contact a Silicon

Labs sales representatives or go to www.silabs.com to order the CP2112 Evaluation Kit.

CP2112

Rev. 1.2 5

2. Electrical Characteristics

Table 1. Absolute Maximum Ratings

Parameter Test Condition Min Typ Max Unit

Ambient Temperature under Bias –55 — 125 °C

Storage Temperature –65 — 150 °C

Voltage on RST

, SDA, SCL, or GPIO Pins with

respect to GND

> 2.2 V

< 2.2 V

–0.3

—

5.8

3.6

Voltage on VBUS with respect to GND V

> 3.0 V

not powered

–0.3

—

5.8

3.6

Voltage on V

or V

with respect to GND –0.3 — 4.2 V

Maximum Total Current through V

, V

, and GND — — 500 mA

Maximum Output Current sunk by RST

or any I/O

——100mA

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.

Table 2. Global DC Electrical Characteristics

= 3.0 to 3.6 V, –40 to +85 °C unless otherwise specified

Parameter Test Condition Min Typ Max Unit

Digital Supply Voltage (V

) 3.0 — 3.6 V

Digital Port I/O Supply Voltage (V

)1.8—V

Voltage on V

with respect to GND during a

ROM programming operation

> 3.3 V 5.75 — V

3.6

Capacitor on V

for ROM programming — 4.7 — µF

Supply Current

Normal Operation;

REG

Enabled

—1516mA

Supply Current

Suspended;

REG

Enabled

—130230µA

Supply Current - USB Pull-up

—200228µA

Specified Operating Temperature Range –40 — +85 °C

Notes:

1. If the device is connected to the USB bus, the USB pull-up current should be added to the supply current to calculate

total required current.

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

CP2112

6 Rev. 1.2

Table 3. SMBus, Suspend I/O DC Electrical Characteristics

= 3.0 to 3.6 V, V

= 1.8 V to V

, –40 to +85 °C unless otherwise specified.

Parameter Test Condition Min Typ Max Unit

Output High Voltage (V

=–10µA

=–3mA

=–10mA

–0.1

–0.2

—

–0.4

—

Output Low Voltage (V

=10µA

=8.5mA

=25mA

—

0.6

0.1

0.4

—

Input High Voltage (V

) 0.7 x V

——V

Input Low Voltage (V

)——0.6V

Input Leakage Current Weak Pull-Up Off

Weak Pull-Up On, V

= 0 V

—

µA

Maximum Input Voltage Open drain, logic high (1) — — 5.8 V

Table 4. Reset Electrical Characteristics

–40 to +85 °C unless otherwise specified

Parameter Test Condition Min Typ Max Unit

RST

Input High Voltage 0.75 x V

——V

RST

Input Low Voltage — — 0.6 V

Minimum RST

Low Time to

Generate a System Reset

15 — — µs

Ramp Time for

Power On

—— 1ms

Table 5. Voltage Regulator Electrical Specifications

–40 to +85 °C unless otherwise specified

Parameter Test Condition Min Typ Max Unit

Input Voltage Range 3.0 — 5.25 V

Output Voltage Output Current = 1 to 100 mA* 3.3 3.45 3.6 V

VBUS Detection Input Threshold 2.5 — — V

Bias Current — — 120 µA

*Note: The maximum regulator supply current is 100 mA. This includes the supply current of the CP2112.

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CP2112-F02-GM

Mfr. #:

Buy CP2112-F02-GM

Manufacturer:

Silicon Labs

Description:

USB Interface IC HID USB to SMBUS Bridge QFN24

Lifecycle:

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CP2112-F02-GM

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