HSESDFDSW4G

4 Gb (512 MB + 16 MB) SLC SPI NAND flash with Dual/Quad SPI and an internal 4-bit/512-byte ECC engine, in an 8-pad WSON8 8 × 6 mm package. Supply 3.3 V (2.7–3.6 V), rated -40°C to 85°C, part number HSESDFDSW4G.

Key figures

• Organization X1; device size 4 Gb (4096 Blocks); page (2K + 64) Byte, block (128K + 4K) Byte.
• Up to 108 MHz SPI clock, equivalent 216/432 MHz on Dual/Quad; 2K-Byte cache for fast random read.
• Internal 4-bit/512-byte ECC; 2 KB unique ID and 2 KB parameter page; ten 2 KB OTP pages.
• Endurance 100,000 erase/program cycles; data retention 10-year at 4-bit/512-byte ECC.
• Manufacturer identifier 3Ch, device identifier D4D4h.

Document status

This is a V1.0 preliminary datasheet — the revision history line reads “New create preliminary datasheet” (Dec 12, 2023). Preliminary means the manufacturer has not finalised the figures; we reproduce them as printed and do not interpolate.

Provenance

Every figure above is taken from the channel-supplied datasheet named in the source note. We found no manufacturer-hosted copy of this exact file, so the datasheet link is intentionally left blank rather than pointing at a same-family product page.

Who makes it

HIKSEMI is the storage brand of 杭州海康存储科技有限公司 (Hangzhou HIKStorage Technology Co., Ltd.), founded in 2017 and built on the Hikvision group storage team. 杭州海康存储科技有限公司 成立于2017年，依托海康威视的技术积累（其团队 2015年：技术团队成立）。