ZEN2044F - Zenic

ZEN2044F 33MHz Up/down Counter

The ZEN2044F is a 24bit x 4ch. programmable universal counter LSI. The ZEN2044F can count phase-shifted pulse signals or up/down pulse signals generated from rotary encoders or linear scales. Since the counter response speed is as high as 33MHz(MAX), the ZEN2044F can be used in a variety of applications required high speed counting, including digital servo c.

Features

80 24bit binary up/down counter x 4ch. 81 Z/CLR2 80 75 70 65 60 Counter response speed: UD/AB2 DIR2 33MHz(MAX)(CLK fo=33MHz at 50% duty) Vdd EXTB3 85 EXTA3 Input frequency of count pulse Vss LD3 LT3 Two phase-shifted pulse signal input: Vss 90 Vdd DC-8.25MHz (less than fo x 1/4) SEL30 SEL31 SEL32 Up/down pulse signal input: 95 Vss A/UP3 DC-16.5MHz (less than fo x 1/2) B/DN3 Z/CLR3 Vdd Direction recognition for up/down count 5 10 15 20 n.c. 100 100 Abnormal input detection circuit 1 Preload register for the up/down counter Latch register for the up/down counter Coincidence detection between re.