CYW20735B1 Single-Chip Bluetooth Transceiver for Wireless Input Devices The Cypress CYW20735B1 is a Bluetooth 5.0-compliant, SoC for IoT applications. Manufactured using the industry s advanced 40 nm CMOS low-power process, the CYW20735B1 employs high levels of integration to minimize external components, reducing the device footprint and the costs associated with implementing Bluetooth solutions. The CYW20735B1 is the optimal solution for applications in wireless input devices including game controllers, remote controls, keyboards, and joysticks or any Bluetooth connected IoT application that needs 12 dBm transmit power such as lighting. Features 32-bit real time clock (RTC) Bluetooth Subsystem Complies with Bluetooth core specification version 5.0 with LE Peripherals and communication 2-Mbps support 1x MIPI DMI-C interface Supports Basic Rate (BR) and Bluetooth Low Energy (BLE) 6x 16-bit PWMs Supports Adaptive Frequency Hopping (AFH) Programmable key-scan matrix interface, up to 8x20 key- Programmable TX power up to 12 dBm scanning matrix Rx sensitivity -94.5 dBm (BLE) Quadrature decoder Ultra-low-power radio Watchdog timer RX current 8 mA 1x peripheral UART, 1x UART for programming and HCI TX current 18 mA 12 dBm 1x SPI (master or salve mode) Coexistence Support 1x I2C master Support for Global Coexistence Interface for easy coexistence One ADC (10-ENoB for DC measurement and 12-ENOB for implementation with select Cypress Wi-Fi devices Audio measurement) Hardware security engine MCU Subsystem 96-MHz ARM Cortex-M4 microcontroller unit MCU with floating General Purpose Input Output (GPIO) point unit (FPU) 24 general purpose I/Os Supports serial wire debug (SWD) 2 dedicated pins for analog microphone Runs Bluetooth stack and application Support 1.7 V to 3.63 V operation Memory Subsystem Four GPIOs support 16 mA and 8 mA source at 3.3 V and 1.8 V respectively 384 KB RAM 2 MB ROM that stores Bluetooth stack and drives and offloads Operating voltage and low-power support flash for user applications Wide operating voltage range - 1.625 V to 3.63V Audio features and interfaces 4 power modes to implement ultra-low power application - managed by real time operating system 1x I2S with master and slave modes 1 uA current in HID-Off mode 1x PCM PDM Packages Analog front end for analog microphone 7 mm x7 mm 60-pin quad flat no-lead (QFN) Clocks Software Support On-chip 32 kHz oscillator WICED Studio On-chip 128 kHz oscillator 32 kHz crystal oscillator 24 MHz crystal oscillator Cypress Semiconductor Corporation 198 Champion Court San Jose, CA 95134-1709 408-943-2600 Document Number: 002-14881 Rev. *I Revised Friday, August 17, 2018 CYW20735B1 Point-of-sale input devices Applications 3D glasses Game controllers Blood pressure monitors Wireless pointing devices (mice) Find-me devices Remote controls Heart-rate monitors Wireless keyboards Proximity sensors Joysticks Thermometers Home automation Figure 1. Functional Block Diagram Bluetooth Core Microcontroller Sub-System RAM 320KB BT5.0 BT5.0 PA RF PHY MAC ROM 2MB ARM Patch Cortex M4 Control Patch RAM 96MHz Clocks 64KB w/ FPU XTAL OSC Debug UART/SWD 24MHz HP-LPO Watchdog 32kHz XTAL OSC 32kHz LP-LPO 16/32/128kHz Peripherals ADC TRNG GPIOs (24) Power Management I/ Core DC-DC IR TRIAC I2C Master O RF LDO PWM (x6) Timer Analog MIC M U 3-Axis Quad. Digital LDO 3D Glass UART X PCM/I2S PA LDO Keyscan Q-SPI (x2) (x2) PDM Coexistence Interface (GCI) Document Number: 002-14881 Rev. *I Page 2 of 45 AHB Bus Matrix