Active 32Mbit SPI FLASH in 8-VDFN
The AT45DQ321-MWHF-T is a Renesas 32Mbit SPI FLASH organized as 528 Bytes x 8192 pages, clocked up to 104 MHz.
SPI throughput and write cycle timing
Page write cycle time is 4 ms typical, word write is 8 µs. At 104 MHz SPI, a full 528-byte page reads in about 40 µs (excluding overhead), giving a read throughput near 13 MB/s. The 8 µs word write is fast enough for byte-level parameter updates without wearing the page buffer.
Renesas lists product status as Active with ROHS3 compliance.