http://www.datasheetspdf.com/pdf ... 66P01-Cmsemicon.pdf
CMS’s CMS66 family of 8-bit OTP-bas
ed microcontrollers. It uses a fully
static CMOS design technology combi
nes higher speeds with the low power
and high noise immunity. On chip memo
ry system includes 1.0K bytes of
OTP ROM, and 67bytes of static RAM