| Parameters | 
                                
                                                                                                            
                                            | Factory Lead Time | 
                                            15 Weeks | 
                                        
                                                                            
                                            | Mounting Type | 
                                            Surface Mount | 
                                        
                                                                            
                                            | Package / Case | 
                                            56-UFQFN Exposed Pad | 
                                        
                                                                            
                                            | Surface Mount | 
                                            YES | 
                                        
                                                                            
                                            | Packaging | 
                                            Tray | 
                                        
                                                                            
                                            | Published | 
                                            2011 | 
                                        
                                                                            
                                            | Series | 
                                            PRoC™ BLE | 
                                        
                                                                            
                                            | Part Status | 
                                            Obsolete | 
                                        
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 
                                            3  (168 Hours) | 
                                        
                                                                            
                                            | Number of Terminations | 
                                            56 | 
                                        
                                                                            
                                            | Type | 
                                            TxRx + MCU | 
                                        
                                                                            
                                            | HTS Code | 
                                            8542.39.00.01 | 
                                        
                                                                            
                                            | Technology | 
                                            CMOS | 
                                        
                                                                            
                                            | Voltage - Supply | 
                                            1.9V~5.5V | 
                                        
                                                                            
                                            | Terminal Position | 
                                            QUAD | 
                                        
                                                                            
                                            | Terminal Form | 
                                            NO LEAD | 
                                        
                                                                            
                                            | Supply Voltage | 
                                            3.3V | 
                                        
                                                                            
                                            | Terminal Pitch | 
                                            0.4mm | 
                                        
                                                                            
                                            | Frequency | 
                                            2.4GHz | 
                                        
                                                                            
                                            | JESD-30 Code | 
                                            S-XQCC-N56 | 
                                        
                                                                            
                                            | Operating Temperature (Max) | 
                                            85°C | 
                                        
                                                                            
                                            | Operating Temperature (Min) | 
                                            -40°C | 
                                        
                                                                            
                                            | Temperature Grade | 
                                            INDUSTRIAL | 
                                        
                                                                            
                                            | Memory Size | 
                                            256kB Flash 32kB SRAM | 
                                        
                                                                            
                                            | Number of I/O | 
                                            36 | 
                                        
                                                                            
                                            | Protocol | 
                                            Bluetooth v4.2 | 
                                        
                                                                            
                                            | Boundary Scan | 
                                            NO | 
                                        
                                                                            
                                            | Power - Output | 
                                            3dBm | 
                                        
                                                                            
                                            | RF Family/Standard | 
                                            Bluetooth | 
                                        
                                                                            
                                            | RAM (words) | 
                                            32000 | 
                                        
                                                                            
                                            | Sensitivity | 
                                            -92dBm | 
                                        
                                                                            
                                            | Serial Interfaces | 
                                            I2C, I2S, SPI, UART | 
                                        
                                                                            
                                            | Bus Compatibility | 
                                            I2C; I2S; IDE; IRDA; LIN; SPI; UART | 
                                        
                                                                            
                                            | GPIO | 
                                            36 | 
                                        
                                                                            
                                            | Height Seated (Max) | 
                                            0.6mm | 
                                        
                                                                            
                                            | Length | 
                                            7mm | 
                                        
                                                                            
                                            | Width | 
                                            7mm | 
                                        
                                                                            
                                            | RoHS Status | 
                                            ROHS3 Compliant | 
                                        
                                                                                                    
                            
                         
                                                CYBL11573-56LQXI Overview
In order to save board space, the 56-UFQFN Exposed Pad package RF transceiver IC is used. The RF transceiver's mounting is mounted using Surface Mount.The system emerges as a TxRx + MCU with transceiver RF's  high efficiency.High reliability is achieved with advanced transceiver RF' packaging Tray.As you can see, this RF transceiver comes from the well-known PRoC? BLE series of products.This system operates at 2.4GHz frequency.
CYBL11573-56LQXI Features
56-UFQFN Exposed Pad package
Surface Mount for mounting
TxRx + MCU 
 Tray is used
PRoC? BLE series
CYBL11573-56LQXI Applications
There are a lot of Cypress Semiconductor Corp CYBL11573-56LQXI RF Transceiver ICs applications. 
- Security Systems
 - Health and Fitness
 - Fitness
 - LED Lighting
 - Smart Meters
 - Thermostats
 - Secure Payment
 - HVAC
 - Internet of Things (IoT)
 - Consumer Electronics