HT6750A Datasheet PDF - Holtek

●General Description

●The 6-Digital Timer is a camera data optical printer. Displaying and printing of data (Year Month Day/Day Hour: Minute/OFF/Month Day Year/Day Month Year) can be selected by mode selection. Date updating is a fully automatic calendar from the year 1998.1.1 to 2049.12.31.

●Features

●  Operating voltage: 2.4V~5.5V

●  Operating current: < 3㎂ at 3.0V

●  Constant voltage output (1.8V±5%) at 2.4V~5.5V operating for driving lamp (1.8V/40mA)

●  LCD contrast can not distort at 2.4V~5.5V operating

●  LCD display drive 1/3 duty, 1/2 bias, frame frequency is 42.67Hz

●  At power interrupt, data hold up > 1.0s (between VDD and VSS connect a 0.1uF capacitor)

●  Built-in power on reset function

●  32K crystal oscillator (Internal capacitor and resistor)

●  Calendar and time adjustment

●  Date imprinting modes (Y/M/D, D/H/Min, Imprint off, M/D/Y, D/M/Y)

●  Mode is selected by cyclically turning

●  4 film printing times is selectable or external input control (30ms/45ms/60ms/external control)

●  Direct resetting system

●  Lamp output time control

●  Provides module test circuit