MC6840 Datasheet - Motorola

MC6840 Programmable Timer Module

www.DataSheet4U.com MOTOROLA Order this document by MC6840/D s SEMICONDUCTOR TECHNICAL DATA MC6840 Programmable Timer Module (PTM) .!,. A),,),, l.~:~ :. L~,. The MC6840 is a programmable subsystem component of the M6800 Family designed to provide t,., ~ ,,.l.,.,$.. ,1. ., ~ :~ ,:::’~” ,<$,+ variable system time intervals. ){t t,$.~ t.+ “:tt+.:?.,:t:’i’ The MC6840 has three 16-bit binary counters, three corresponding control registers, and a status .:?,\, +, ,,,.F+ ~! ,;&~ regist.

MC6840 Features

* PU address line into a Chip Select of the PTM when using the MC6800/6802/680B. BIDIRECTIONAL DATA (DGD7)

* The bidirectional .data N t~@skU lines (DO-D7) allow the transfer of data between and PTM. The data bus output drivers are t~~$,~$ta$e devices which remain in the high-impedance (Q@),%t

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