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X1286_06 Datasheet, PDF (1/25 Pages) Intersil Corporation – Intersil Real Time Clock/Calendar/CPU Supervisor with EEPROM | |||
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Data Sheet
X1286
2-Wire⢠RTC, 256k (32k x 8)
April 14, 2006
FN8101.1
Intersil Real Time Clock/Calendar/CPU
Supervisor with EEPROM
FEATURES
⢠Real Time Clock/Calendar
â Tracks time in Hours, Minutes, Seconds and
Hundredths of a Second
â Day of the Week, Day, Month, and Year
⢠2 Polled Alarms (Non-volatile)
â Settable on the Second, Minute, Hour, Day of the
Week, Day, or Month
â Repeat Mode (periodic interrupts)
⢠Oscillator Compensation on chip
â Internal feedback resistor and compensation
capacitors
â 64 position Digitally Controlled Trim Capacitor
â 6 digital frequency adjustment settings to
±30ppm
⢠Battery Switch or Super Cap Input
⢠32K x 8 Bits of EEPROM
â 128-Byte Page Write Mode
â 8 modes of Block Lock⢠Protection
â Single Byte Write Capability
⢠High Reliability
â Data Retention: 100 years
â Endurance: 100,000 cycles per byte
⢠2-Wire⢠Interface interoperable with I2C*
â 400kHz data transfer rate
⢠Frequency Output (SW Selectable: Off, 1Hz, 100Hz,
or 32.768kHz)
⢠Low Power CMOS
â 1.25µA Operating Current (Typical)
⢠Small Package Options
â 8 Ld EIAJ SOIC and 14 Ld TSSOP
⢠Repetitive Alarms
⢠Temperature Compensation
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
BLOCK DIAGRAM
X1
32.768kHz
X2
PHZ/IRQ
Select
SCL
SDA
Serial
Interface
Decoder
Control
Decode
Logic
8
OSC
Compensation
Oscillator
Frequency 1Hz
Divider
Timer
Calendar
Logic
Control/
Registers
(EEPROM)
Status
Registers
(SRAM)
Alarm
Time
Keeping
Registers
(SRAM)
Compare
Alarm Regs
(EEPROM)
256K
EEPROM
ARRAY
Battery
Switch
Circuitry
VCC
VBACK
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2005, 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
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