HT66FB542

A/D Flash USB MCU with SPI HT66FB540/HT66FB542 HT66FB550/HT66FB560 Revision: V1.80 Date: November 19, 2019 HT66FB540/HT66FB542/HT66FB550/HT66FB560 A/D Flash USB MCU with SPI Table of Contents Features............................................................................................................. 6 CPU Features.......................................................................................................................... 6 Peripheral Features.................................................................................................................. 6 General Description.......................................................................................... 7 Selection Table.................................................................................................. 8 Block Diagram................................................................................................... 8 Pin Assignment................................................................................................. 9 Pin Description............................................................................................... 12 Absolute Maximum Ratings........................................................................... 23 D.C. Characteristics........................................................................................ 24 A.C. Characteristics........................................................................................ 26 LVD & LVR Elect...