UPD4702 – INCREMENTAL ENCODER 8-BIT UP/DOWN COUNTER CMOS INTEGRATED CIRCUITS

UPD4702 Datasheet PDF learn more.

Part number : UPD4702

Functions : This is a kind of semiconductor, INCREMENTAL ENCODER 8-BIT UP/DOWN COUNTER CMOS INTEGRATED CIRCUITS.

Pin arrangement :

Package information :

Manufacturer : NEC

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UPD4702 Datasheet PDF

The texts in the PDF file :

DATA SHEET MOS INTEGRATED CIRCUIT µPD4702 INCREMENTAL ENCODER 8-BIT UP/DOWN COUNTER CMOS INTEGRATED CIRCUITS DESCRIPTION The µPD4702 is 8-bit up/down counters for an incremental encoder. Two-phase (A, B) incremental input signals are phase-differentiated, and on each signal edge, an up-count is executed if the A phase is leading, or a down-count if the B phase is leading. Eight-bit count data is output in real time. A carry output and borrow output are also provided for counter overflow and underflow. The µPD4704 is also available; use of these enables the count width to be extended. FEATURES • Incremental inputs (A, B) • On-chip phase discrimination circuit (up-count mode when the phase order is A → B, down-count mode when B → A) 4-multiplication count method • On-chip edge detection circuit • 8-bit up/down counter latch output o Carry output, borrow output • Count data output controllable (3-state output) • CMOS, single +5 V power supply PIN CONFIGURATION (Top View) Reset A B NC CD0 CD1 CD2 CD3 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 VDD Carry Borrow STB OE CD7 CD6 CD5 CD4 NC ORDERING INFORMATION Part Number Package 20-pin plastic DIP 20-pin plastic SOP (300 mil) (300 mil) NC VSS µPD4702C µPD4702G PIN NAMES A B Reset STB OE CD0-7 Carry   2-phase incremental signal inputs  : Counter reset input : Latch strobe signal input : Output control signal input : Count data outputs : Carry pulse output Borrow : Borrow pulse output Document No. IC-3304A (2nd edition) (O. D. No. IC-5403A) Date Published April 1997 P Printed in Japan © 1993 1994 µPD4702 BLOCK DIAGRAM Reset A Phase Discrimination Edge Detection B 8-Bit Up/Down Counter Carry Borrow 8-Bit Latch 3-State Output STB OE CD0–7 PIN FUNCTIONS Pin Name A, B Input/Output Input (Schmitt) Output (3-state) Output Output Input (Schmitt) Input Input Function Incremental signal A phase and B phase signal input pins (Schmitt input) D0 to 7 Count data output p [ … ]

UPD4702 PDF File



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