HEF4753B - NXP

HEF4753B Universal timer module

The HEF4753B is a universal timer module for counting and dividing as well as for event-recognition and manipulation of input sequences. The following functions are included: synchronization and edge-detection of the input signal, programmable counter, clock divider with different lengths, operating mode decoder, control logic and output multiplexer. Dependi.

Features

equency control circuit. All manipulation possibilities depend on a time scaling, which is adjustable by the 8-bit programmable counter and the system clock. The system clock can be divided internally by 1, 16, 256 or 4096 as input clock for the counter. In all cases the manipulated input sequence appears at the only output OUT. Fig.1 Functional diagram. FAMILY DATA, IDD LIMITS category LSI See Family Specifications January 1995 2 Philips Semiconductors Product specification Universal timer module FUNCTION TABLES INPUTS HEF4753B LSI OPERATING MODE LFC L L H H H L Fig.2 Pinning diagram..