Holtek announced the release of two new Advanced Flash MCU series, the HT66F23x0 and HT67F23x0. The devices include a range of rich peripheral resources, as well as a flash program memory capacity of up to 1 Mega-bit. As the devices have achieved IEC/UL 60730 certification, they are supplied with a software library dedicated for IEC/UL 60730 verification to assist users in their product development and verification.