1. Single-Chip USB to UART Data Transfer - Integrated USB transceiver; no external resistors required - Integrated clock; no external crystal required - Internal 1024-byte programmable ROM for vendor ID, product ID, serial number, power descriptor, release number, and product description strings
- EEPROM (CP2102) - EPROM (One-time programmable) (CP2109) - On-chip power-on reset circuit - On-chip voltage regulator - 3.3 V output (CP2102) - 3.45 V output (CP2109)