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X1205V8 Fiches technique(PDF) 1 Page - Xicor Inc. |
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X1205V8 Fiches technique(HTML) 1 Page - Xicor Inc. |
1 / 22 page REV 1.0.9 8/29/02 Characteristics subject to change without notice. 1 of 22 www.xicor.com 2-Wire™ RTC Real Time Clock/Calendar FEATURES • Real Time Clock/Calendar —Tracks time in Hours, Minutes, and Seconds —Day of the Week, Day, Month, and Year • 2 Polled Alarms (Non-volatile) —Settable on the Second, Minute, Hour, Day of the Week, Day, or Month —Repeat Mode (periodic interrupts) • Oscillator Compensation on chip —Internal feedback resistor and compensation capacitors —64 position Digitally Controlled Trim Capacitor —6 digital frequency adjustment settings to ±30ppm • Battery Switch or Super Cap Input • 2-Wire™ Interface interoperable with I2C* —400kHz data transfer rate • Low Power CMOS —1.25µA Operating Current (Typical) • Small Package Options —8-Lead SOIC and 8-Lead TSSOP APPLICATIONS • Utility Meters • HVAC Equipment • Audio / Video Components • Set Top Box / Television • Modems • Network Routers, Hubs, Switches, Bridges • Cellular Infrastructure Equipment • Fixed Broadband Wireless Equipment • Pagers / PDA • POS Equipment • Test Meters / Fixtures • Office Automation (Copiers, Fax) • Home Appliances • Computer Products • Other Industrial / Medical / Automotive DESCRIPTION The X1205 device is a Real Time Clock with clock/ calendar, two polled alarms, oscillator compensation, and battery backup switch. The oscillator uses an external, low-cost 32.768kHz crystal. All compensation and trim components are integrated on the chip. This eliminates several external discrete components and a trim capacitor, saving board area and component cost. The Real-Time Clock keeps track of time with separate registers for Hours, Minutes, and Seconds. The Calendar has separate registers for Date, Month, Year and Day-of-week. The calendar is correct through 2099, with automatic leap year correction. X1205 Preliminary Information BLOCK DIAGRAM X1 X2 Oscillator Frequency Timer Logic Divider Calendar 8 32.768kHz Control Registers 1Hz Time Keeping Registers Alarm Regs Compare IRQ Control Decode Logic Alarm (EEPROM) (EEPROM) SCL SDA Serial Interface Decoder Interrupt Enable Registers Status (SRAM) Alarm Alarm (SRAM) OSC Compensation *I2C is a Trademark of Philips. New Features Repetitive Alarms & Temperature Compensation |
Numéro de pièce similaire - X1205V8 |
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Description similaire - X1205V8 |
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