Programming instructions

4000 Series ICs
 National Instruments Corporation 7-43 Multisim Component Reference Guide
7.2.82 4526 (4-bit Bin Down Counter)
7.2.83 4531 (13-input Checker/Generator)
The 4531 device is a parity checker/generator with 13 parity inputs (I0 to I12) and a parity
output (O).
The 4526 device is a synchronous programmable 4-bit binary down counter with an active
HIGH and an active LOW clock input (CP0, CP
1), an asynchronous parallel load input
(PL), four parallel inputs (P0 to P3), a cascade feedback input (CF), four buffered parallel
outputs (O0 to O3), a terminal count output (TC) and an overriding asynchronous master
reset input (MR).
ComponentRef.book Page 43 Thursday, December 7, 2006 10:12 AM