EZ-PD™ PMG1-B1 CYPM1115-48LQXI distinguishes itself for its Rpand Rdtermination resistors and the tray packing. It is part of the EZ-PD™ PMG1-B1 family of highly integrated single-port USB-C Power Delivery (PD) solution with integrated buck-boost controllers. The Cortex®-M0 in EZ-PD™ PMG1-B1 devices is a 32-bit MCU, which is optimized for low-power operation with extensive clock gating. EZ-PD™ PMG1-B1 devices have 128 KB Flash and 32 KB ROM for non-volatile storage. ROM stores libraries for authentication and device drivers such as I2C, SPI, and so on. Flash provides the flexibility to store code for any customer feature and allows firmware upgrades to meet the latest USB power delivery specifications and application needs. The 16-KB RAM is used under software control to store the temporary status of system variables and parameters. A supervisory ROM that contains boot and configuration routines is provided. The USBPD subsystem contains the USBPD physical layer block and supporting circuits. The USBPD physical layer consists of a transmitter and receiver that communicate BMC encoded data over the CC channel per the PD 3.1 standard. All communication is half-duplex. The USBPD block includes all termination resistors (Rpand Rd) and their switches as required by the USB Type-C spec. The EZ-PD™ PMG1-B1 device family along with the accompanying firmware is fully compliant with revision 3.1 of the USB Power delivery specification. The device supports programmable power supply (PPS) operation at all valid voltages from 3.3 to 21 V and has a programmable switching frequency (150 to 600 kHz).