STWBC-WA STMicroelectronics

STWBC-WA Digital controller for wireless battery charger transmitters for wearable and smartwatch applications Datasheet - production data Memory Flash and EEPROM with read-while-write (RWW) and Error Correction Code (ECC) Program memory: 32 Kbytes Flash data retention:15 years at 85 C after 10 kcycles at 25 C Data memory: 1 Kbyte true data EEPROM data retention: 15 years at 85 C after 100 kcycles at 85 C VFQFPN32 RAM: 6 Kbytes Transmitter reference design: Evaluation board order code: Features STEVAL-ISB038V1T Digital controller for wireless battery charger 2-layer PCBs transmitters Active object detection Optimized for < 3 W applications Graphical user interface for application Smartwatches and healthcare monitoring Internet of Things (IoT) battery-powered Interoperable with receiver: smart devices STEVAL-ISB038V1R Remote controllers Operating temperature Cost effective half-bridge topology with -40 C up to 105 C integrated drivers Package Optional full-bridge configuration for 3 W VFQFPN32 applications : Table 1. Ordering information V range: 3 V to 5.5 V IN Supports USB V Order code Type IN Active presence detector STWBC-WA Controller (tube) Parametric customization via graphical STWBC-WATR Controller (tape and reel) interface STEVAL-ISB038V1T Transmitter evaluation board 2 firmware options: STEVAL-ISB038V1R Receiver evaluation board Turnkey solution for quick design APIs available for application customization Transmitter and receiver STEVAL-ISB038V1 evaluation kit Peripherals available via APIs ADC, with 10-bit precision UART 2 I C master fast/slow speed rate GPIOs August 2016 DocID029660 Rev 1 1/31 This is information on a product in full production. www.st.comContents STWBC-WA Contents 1 Description . 4 2 STWBC-WA system architecture . 5 Firmware . 5 3 STWBC-WA pinout and pin description . 6 4 Electrical characteristics . 8 4.1 Parameter conditions . 8 4.1.1 Minimum and maximum values 8 4.1.2 Typical values . 8 4.1.3 Typical curves . 8 4.1.4 Typical current consumption 8 4.1.5 Loading capacitors 9 4.1.6 Pin output voltage . 10 4.2 Absolute maximum ratings 10 4.3 Operating conditions 12 4.3.1 VOUT external capacitor 13 4.3.2 Internal clock sources and timing characteristics . 13 4.3.3 Memory characteristics . 15 4.3.4 I/O port pin characteristics . 16 4.3.5 Typical output level curves . 18 4.3.6 Fast pad . 20 4.3.7 Reset pin characteristics 22 2 4.3.8 I C interface characteristics 22 4.3.9 10-bit SAR ADC characteristics . 23 4.4 EMC characteristics . 26 4.4.1 Electrostatic discharge (ESD) 26 4.4.2 Static latch-up 26 5 Thermal characteristics . 27 6 Package information 28 6.1 VFQFPN32 package information . 28 2/31 DocID029660 Rev 1