A parallel bidirectional communication interface for the mass-produced
K1-20 microcontroller built around a K572PV1 chip is described. The d
evice provides synchronous and asynchronous input of analog informatio
n to the controller's main memory with a frequency of up to 10 kHz and
its digital-to-analog conversion. The transformation error is +/-1%,
high-speed response is 5 musec, and input signal amplitude is +/-10 V.