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ZEN2044F Datasheet دیتاشیت PDF دانلود

دیتاشیت - Zenic - 33MHz Up/down Counter

شماره قطعه ZEN2044F
شرح مفصل 33MHz Up/down Counter
تولید کننده Zenic 
آرم Zenic 


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ZEN2044F شرح
www.DataSheet4U.com
PROGRAMMABLE UNIVERSAL COUNTER
ZEN2044F
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 command sets, the ZEN2044F has a compatibility with the ZEN2011P.
The ZEN2044F can also monitor input signals and detect any abnormal input accompanied with noise or
other disturbances, so that the reliability of counted values are secured.
1. Features
Pin Configuration(Top View)
24bit binary up/down counter x 4ch.
Counter response speed:
33MHz(MAX)(CLK fo=33MHz at 50% duty)
Input frequency of count pulse
Two phase-shifted pulse signal input:
DC-8.25MHz (less than fo x 1/4)
Up/down pulse signal input:
DC-16.5MHz (less than fo x 1/2)
Direction recognition for up/down count
Abnormal input detection circuit
80
81
Z/CLR2
UD/AB2
DIR2
Vdd
EXTB3
EXTA3
Vss
LD3
LT3
Vss
Vdd
SEL30
SEL31
SEL32
Vss
A/UP3
B/DN3
Z/CLR3
Vdd
n.c.
80
85
90
95
100
100
75
5
70
10
65
15
60
20
55
25
51
50
50 n.c.
Vss
TEST1
TEST0
Vss
45 D7
D6
D5
D4
Vdd
40 Vss
D3
D2
D1
D0
35 Vdd
RD
WR
Vss
30 n.c.
31
Preload register for the up/down counter
1
30
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
Command mode
Mode 0:
Each channel has one comparator for coincidence detection
Each channel has one port for user input
Mode 1:
Each channel has two comparators 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 power CMOS technology
TTL level compatible input
Single 5V power supply
100 pin QFP
Note ) In following chapters;
"n" corresponds to a number of the channel(0-3).
"*" stands for "Don't care".
(Z2044G00)ZENIC INC.
-1-

قانون اساسیصفحه 25
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