1. Chip Introduction CSNP4GCR01-BOW is a 4Gb embedded storage product based on NAND flash and an SD controller. Compared to raw NAND, this product offers multiple advantages, including built-in bad block management and stronger embedded ECC. The CSNP4GCR01-BOW adopts an LA-8 package with dimensions of 8mm x 6mm x 0.75mm. 2. Product Features Interface: Compliant with standard SD Specification Version 2.0, supporting 1-I/O and 4-I/O modes. Power supply: Vcc = 2.7V - 3.6V. Default mode: Clock frequency 0 - 25 MHz, interface speed up to 12.5 MB/sec (using 4 parallel data lines). High-speed mode: Clock frequency 0 - 50 MHz, interface speed up to 25 MB/sec (using 4 parallel data lines). Operating temperature: -30°C to 85°C. Storage temperature: -40°C to 85°C. Standby current: < 200μA.