JT9634-AS

The JT9634-AS is a kind of CMOS digital integrated circuit. It is silicon monolithic. The device is designed for calculator watch applications.

There are some features of JT9634-AS as follows: (1)calculator function with 4 standard function by 8 digits; (2)alarm function with buzzer direct drive; (3)chime function to beep the buzzer at every hour; (4)chronograph function with lap operation; (5)dual time function; hour, minutes, year, month, day of the month and day of the week; (6)12 hour/24 hour cycle are selectable by wearer with switch; (7)month-day-year/day-month-year display are selectable by the switch operation ; (8)direct interface to: hour, minute, second, year, month, day of the month and day of the week; (9)day of the month and day of the month can be calculated from year and month; (10)16 keys for calculator function with 4 or 5 keys for watch function; (11)buzzer beep shot for anouncing sure calculator operation; (12)single 1.55 V supply; (13)voltage doubler (two external capacitors); (14)alarm time: 20 seconds; (15)3-4 minutes snooze function.

The following is about the maximum ratings of JT9634-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): (1)output current segment COM VSS1, IOH1: -140 A max at VOH1=-0.3 V; (2)output current segment COM VSS1, IOL1: 140 A min at VOL1=-2.7 V; (3)output current segment COM VSS2, IOH2: -70 A max at VOH2=-1.75 V; (4)output current segment COM VSS2, IOL2: 70 A min at VOL2=-1.35 V; (5)output current segment, IOH3: -6.0A max at VOH3=-0.30 V; (6)out current segment, IOL3: 6.0A min at VOL3=-2.7 V.