CP2120 Datasheet, PDF (1/24 Pages) Silicon Laboratories – Integrated clock no extemal clock required On-Chip Voltage Monitor

CP2120
S P I TO I ²C B RIDGE AND G P I O P ORT E XPANDER
Single Chip SPI to I²C Transfer
Integrated clock; no external clock required
On-Chip Voltage Monitor
Slave Serial Peripheral Interface (SPI)
Up to 1.0 Mbit/s Transfers
Configurable to Least Significant Bit or Most Significant
Bit first byte transfers
I²C Master Interface
Operates at configurable rates up to 400 kHz
255 RX and TX Data Buffers
Input and Output Port Pins
8 Pins Configurable as Push-Pull or Open-Drain
1 Pin Configurable as an edge-triggered interrupt
source
All pins 5 V Tolerant
INT active low interrupt pin
Supply Voltage of 2.7 V to 3.6 V
Typical operating current: 6.4 mA
Package
Pb-free 20-pin QFN
MISO
MOSI
SCK
CS
Voltage
Monitor
SPI
Interface
Internal
Oscillator
Controller
I²C
Interface
Internal Registers
Port Controller
SDA
SCL
Eight I/O Pins ^{Edge-Triggered}
Interrupt Source
Figure 1. Block Diagram
Rev. 0.4 4/09
Copyright © 2009 by Silicon Laboratories
CP2120
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.