JT9692A-AS

The JT9692A-AS is a kind of single-chip CMOS LSI to directly drive a six-digit LCD. The JT9692A-AS provides alarm, calendar, stopwatch and watch time display functions. It is widely used in watches.

There are some features of JT9692A-AS as follows: (1)LCD display output and analog drive pulse output; (2)analog drive pulse width: 3.4 ms, 3.9 ms, 4.4 ms, 4.9 ms selectable; (3)stopwatch with lap function; (4)buzzer signal output alarm function; (5)switch for 12/24 hour clock switching; (6)on-the-hour chime function that outputs buzzer sound; (7)1/3 duty direct LCD drive; (8)four-year automatic calendar; (9)stopwatch accurate to the 100th of a second; (10)alarm settable in one-minute unites (buzzer output: 2 kHz); (11)low current consumption ; (12)1.55 V single power supply; (13)built-in voltage doubler circuit (uses external capacitor); (14)all-lit function at reset; (15)alarm output time of 20s.

The following is about the maximum ratings of JT9692A-AS: (1)supply voltage 1, VSS1-VDD: -0.3 to 0.2 V; (2)supply voltage 2, VSS2-VDD: -4.0 to 0.2 V; (3)operating temperature, Topr: -10 to 60; (4)storage temperature, Tstg: -40 to 125. Then is about the electrical characteristics (referenced to VDD=0 V, VSS1=-1.55 V, VSS2=-3.0 V, Ta=25, unless otherwise noticed): (1)output current (segment) VSS1, IOH1: -0.5 A max at VSS1=-1.55 V, VSS2=-3.0 V, VOH1=-0.2 V; (2)output current (segment), IOL1: 0.5 A min at VSS1=-1.55 V, VSS2=-3.0 V, VOL1=-2.8 V; (3)output current (common), IOH2: -3.0 A max at VSS1=-1.55 V, VSS2=-3.0 V, VOH2=-0.2 V; (4)output current (common) VSS1, IOL2: 3.0 A min at VSS1=-1.55 V, VSS2=-3.0 V, VOL2=-2.8 V; (5)output current (BUZZ), IOH3: -1000 min and -100A max at VSS1=-1.30 V, VSS2=-3.0 V, VOH2=-0.6 V; (6)output current (BUZZ), IOL3: 3A min and 60A max at VSS1=-1.30 V, VSS2=-3.0 V, VOH2=-1.2 V.