LS7222 Datasheet (LSI Computer Systems) - KEYPAD PROGRAMMABLE DIGITAL LOCK

LS7222, KEYPAD PROGRAMMABLE DIGITAL LOCK

The LS7222 is a programmable electronic lock implemented in a monolithic CMOS integrated circuit.

The circuit contains all the necessary memory, decoder and control logic to make a programmable "keyless" lock system to control electro-mechanical locks.

Input is provided by a matrix keypad whose max

LS7222 Features

* Stand alone lock logic

* 38416, 4-digit combinations

* 3 different user programmable codes

* Momentary and static lock control outputs

* Internal key debounce circuitry

* Tamper detection output

* Status outputs

* Low current consump