CP2120 Ver la hoja de datos (PDF) - Silicon Laboratories
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CP2120 Datasheet PDF : 24 Pages
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CP2120
1. System Overview
The CP2120 is a highly-integrated SPI-to-I2C Bridge Controller with an SPI interface that provides a simple and
reliable method for communicating with I2C devices. The CP2120 includes a 4-wire serial peripheral interface
(SPI), a serial I2C interface, 256 byte data buffers, an internal oscillator, eight input/output port pins, and one pin
configurable as an edge-triggered interrupt source in a compact 4x4 package. No external components other than
pull-up resisters on the I2C pins are required. The SPI Master controls the CP2120 across the SPI interface using
a command set that governs all CP2120 configuration and operation.
2. Global DC Electrical Characteristics
Table 1. Global Electrical Characteristics
–40 to +85 °C, 25 MHz system clock unless otherwise specified.
Parameter
Test Condition Min
Typ
Max
Unit
Digital Supply Voltage
VRST
3.0
3.6
V
Digital Supply Current
Specified Operating Temperature Range
VDD = 3.0 V
—
3.8
4.1
mA
–40
—
+85
°C
VDD POR Threshold (VRST)
2.40
2.55
2.70
V
3. Absolute Maximum Ratings
Table 2. Absolute Maximum Ratings
Parameter
Test Condition Min
Typ
Max
Unit
Ambient temperature under bias
–55
—
125
°C
Storage Temperature
–65
—
150
°C
Voltage on any Port I/O Pin or RST with respect
to GND
–0.3
—
5.8
V
Voltage on VDD with respect to GND
–0.3
—
4.2
V
Maximum Total current through VDD or GND
—
—
500
mA
Maximum output current sunk by RST or any
Port pin
—
—
100
mA
Note: Stresses above the absolute maximum ratings may cause permanent device damage. This is a stress rating only, and
functional operation of the devices at any conditions equal to or greater than those indicated in the operational listings
of this specification are not implied. Exposure to maximum rating conditions for extended periods may affect device
reliability.
4
Rev. 1.0
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