80C188 - AMD

80C188 16-Bit Microprocessors

AMENDMENT 80C186 and 80C188 Integrated 16-Bit Microprocessors This document amends the 80C186 and 80C188 Integrated 16-Bit Microprocessors Data Book, order #16514D, and replaces the discontinued 80C186/80C188 CMOS High-Integration 16-Bit Microprocessors Amendment (specifications for the 20-MHz industrial operating range). This amendment consists of two part.

Features

is twice the processor frequency. AMD does not recommend that you replace a crystal with an LC or RC equivalent for any member of the Am186™ family. The X1 and X2 signals are connected to an internal inverting amplifier (oscillator) that provides, along with the external feedback loading, the necessary phase shift (Figure 1 on page 2). In such a positive feedback circuit, the inverting amplifier has an output signal (X2) 180 degrees out of phase of the input signal (X1). The external feedback network provides an additional 180 degree phase shift. In an ideal system, the input to X1 has 360 or .