ZEN2044F Datasheet | Zenic

DESCRIPTION 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 controls and precision measurements. As to mand sets, the ZEN2044F has a patibility with the ZEN2011P. The ZEN2044F can also monitor input signals and detect any abnormal input acpanied with noise or other disturbances, so that the reliability of counted values are secured. Pin Configuration(Top View) B/DN2 A/UP2 Vss SEL22 SEL21 SEL20 LT2 LD2 Vss EXTA2 EXTB2 Vdd Vdd CLK Vss DIR1 UD/AB1 Z/CLR1 B/DN1 A/UP1 n.c. SEL12 SEL11 SEL10 LT1 LD1 Vdd EXTA1 EXTB1 Vss 1. Features 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 reference value and count value Counter operation mode Quad/double/single edge evaluation(for two phase-shifted signal / single pulse signal) Counter direction selection Count clear control: synchronous/asynchronous mand mode Mode 0: Each channel has one parator for coincidence detection Each channel has one port for user input Mode 1: Each channel has two parators for coincidence detection Each channel has no port for user input Logical sum output of coincidence detections available Interrupt output under some conditions available 8bit data bus Low...