A 24MB Embedded Flash System Based on 28nm SG-MONOS Featuring 240MHz Read Operations and Robust Over-The-Air Software Update for Automotive
Akihiko Kanda, Takashi Kurafuji, Koichi Takeda, Tomoya Ogawa, Yasuhiko Taito, Kazuo Yoshihara, Masaya Nakano, Takashi Ito, Hiroyuki Kondo, Takashi Kono · 2019
This paper presents an embedded Flash system based on 28nm SG-MONOS technologies for automotive. It contains the world's largest 24MB code Flash memories and achieves 240MHz random read access at Tj of 170°C and -40°C. The peak current for programming in over-the-air software update (OTA) is reduced by 55%. A high-speed program mode with 6.5MB/s is implemented for shorter test time. The system realizes robust and fast software switching of ~1ms in OTA.