X1286 Intersil Corporation, X1286 Datasheet

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X1286

Manufacturer Part Number
X1286
Description
Intersil Real Time Clock/Calendar/CPU Supervisor with EEPROM X1286
Manufacturer
Intersil Corporation
Datasheet

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Intersil Real Time Clock/Calendar/CPU Supervisor with EEPROM
FEATURES
• Real Time Clock/Calendar
• 2 Polled Alarms (Non-volatile)
• Oscillator Compensation on chip
• Battery Switch or Super Cap Input
• 32K x 8 Bits of EEPROM
• High Reliability
• 2-Wire™ Interface interoperable with I2C*
• Frequency Output (SW Selectable: Off, 1Hz, 100Hz,
• Low Power CMOS
• Small Package Options
BLOCK DIAGRAM
REV 1.1 7/8/04
*I2C is a Trademark of Philips.
Repetitive Alarms &
Temperature Compensation
PHZ/IRQ
— Tracks time in Hours, Minutes, Seconds and Hun-
— Day of the Week, Day, Month, and Year
— Settable on the Second, Minute, Hour, Day of the
— Repeat Mode (periodic interrupts)
— Internal feedback resistor and compensation
— 64 position Digitally Controlled Trim Capacitor
— 6 digital frequency adjustment settings to
— 128-Byte Page Write Mode
— 8 modes of Block Lock™ Protection
— Single Byte Write Capability
— Data Retention: 100 years
— Endurance: 100,000 cycles per byte
— 400kHz data transfer rate
or 32.768kHz)
— 1.25µA Operating Current (Typical)
— 8-Lead EIAJ SOIC and 14-Lead TSSOP
dredths of a Second
Week, Day, or Month
capacitors
±30ppm
SCL
SDA
New Features
32.768kHz
Interface
Decoder
Serial
Select
X1
X2
8
Decode
Control
Logic
(EEPROM)
Registers
Control/
Compensation
Oscillator
OSC
www.intersil.com
2-Wire™ RTC, 256K (32K x 8)
Frequency
Divider
Registers
(SRAM)
Status
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
1Hz
Alarm
Calendar
Timer
Logic
Compare
Alarm Regs
EEPROM
(EEPROM)
ARRAY
Registers
Keeping
(SRAM)
256K
Time
Circuitry
Battery
Switch
X1286
V
V
1 of 26
CC
BACK
®

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