4-bit Microcontroller

The W921E840A W921C840 is single-chip CMOS 4-bit Microcontroller that is subset of W921E880A/W921C880. They features four multi-function Timers one channel DTMF generator, an 8-bit D/A Converter circuit, ten interrupt sources, 48-level subroutine nesting, and built in four by one channel Comparator circuit. Two power down modes, hold and stop mode, reduce power dissipation. The excellent memory structure, 8K super EPROM in W921E840A and 8K mask ROM in W921C840 for program code and 512 x 4 bit RAM minimize the need for external memory devices. The W921E840A W921C840 are powerful Microcontroller for wide range consuming applications, requiring few external components, which is especially suited for telecommunication design. By Winbond Electronics Corp America
W921E840A 's PackagesW921E840A 's pdf datasheet

W921E840A Pinout, Pinouts
W921E840A pinout,Pin out
This is one package pinout of W921E840A,If you need more pinouts please download W921E840A's pdf datasheet.

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