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UPD4702C 数据表(PDF) 1 Page - NEC |
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UPD4702C 数据表(HTML) 1 Page - NEC |
1 / 16 page 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. © 1994 DATA SHEET 1993 INCREMENTAL ENCODER 8-BIT UP/DOWN COUNTER CMOS INTEGRATED CIRCUITS µPD4702 MOS INTEGRATED CIRCUIT 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 ORDERING INFORMATION Part Number Package µPD4702C 20-pin plastic DIP (300 mil) µPD4702G 20-pin plastic SOP (300 mil) 1 2 3 4 5 6 7 8 9 10 Reset A B NC CD0 CD1 CD2 CD3 NC VSS VDD Carry Borrow STB OE CD7 CD6 CD5 CD4 NC 20 19 18 17 16 15 14 13 12 11 PIN CONFIGURATION (Top View) PIN NAMES A 2-phase incremental signal inputs B Reset : Counter reset input STB : Latch strobe signal input OE : Output control signal input CD0-7 : Count data outputs Carry : 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 |
类似零件编号 - UPD4702C |
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类似说明 - UPD4702C |
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