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| Intersil's New Real Time Clock Features Tamper Detect and InterSeal™
Battery Sav | | | |
MILPITAS, CA - Intersil Corporation introduced today the ISL1209 Real Time
Clock (RTC) that combines high-precision, low-power for a wide variety of applications which require very accurate
clock and calendar functions with Event Detect. Applications for this device are varied, such as electronic power
meters, ATM, medical and other security related equipment and systems. In addition, the device incorporates
Intersil’s InterSeal battery saver technology, which prevents any current drain on the battery until the unit is
first powered up.
The ISL1209 features an Event Detect and Time Stamp function; this is important for
applications requiring increased security, warranty monitoring, data collection and/or event recording. The feature
allows for recording event times, such as, when an enclosure or door was opened, etc. This makes the ISL1209 ideal
for applications requiring anti-tampering and security such as set-top boxes, utility meters, security alarm and
security camera systems or vending machines.
“In addition to providing accurate clock and
calendar functions, our new real time clock integrates timing and crystal compensation, flexible alarm, programmable
clock output, power fail detection and intelligent battery backup switching into one space saving package,” said
Rouben Gharagozian, marketing director for Timing Devices at Intersil. “In addition, its low 400nA current
consumption at 3.0V and small package make it an ideal choice for portable, handheld, battery-powered equipment and
microprocessor applications where space is at a premium.”
Applications with high accuracy
requirements will benefit from using the ISL1209, which contains circuitry for adjusting the frequency of the
crystal oscillator through ATR (Analog Trimming Registers) and DTR (Digital Trimming Registers). This circuitry can
be used to tune oscillator initial frequency, as well as, adjust to compensate for temperature changes. The
oscillator uses an external, 32.768kHz crystal. The RTC tracks time with separate registers for hours, minutes and
seconds. The device has calendar registers for date, month, year and day of the week. The calendar is accurate
through 2099, with automatic leap year correction.
The IRQ/FOUT provides one of 15 different
frequency output ranging from 32.768 kHz down to 1/32Hz for micro controller and other timing circuits. Users have
access to 2 bytes of battery-backed SRAM that can be used for scratchpad memory.
The InterSeal
feature is an obvious benefit for products that might be stored for some time before they are first used.
Applications for these products include telecom systems, consumer electronics, industrial, medical devices, and
security related equipment and systems.
Key Features
* Event Detect and
Time Stamp
* InterSeal battery saver
* On-chip oscillator compensation
*
Accurate real time clock and calendar
o Tracks time in hours, minutes and seconds
o Day of the week, day, month and year
* Flexible alarm with single event and pulse interrupt
mode
o Settable to the second, minute, hour, day of the week, day or month
o
Single event or pulse interrupt mode
* 15 selectable frequency outputs
* Automatic backup
to battery or super cap
* 2 bytes of battery-backed user SRAM
* 400nA battery supply
current at 3.0V
Target Applications:
* Utility meters, HVAC and POS
equipment, test meters and fixtures
* Vending Machine, ATM, Postage Stamp dispenser
*
Cellular infrastructure and fixed broadband wireless equipment
* Computer products and office
automation equipment (copiers, fax requiring Time Stamp)
* Security and anti-tampering applications
o Panel/enclosure status
o Warranty reporting
o Time stamping
applications
o Patrol/security check (fire or light equipment)
o Automotive
applications
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Lunes, 11 Julio, 2005 - 07:00 | |
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| Intersil's New Real Time Clock Features Tamper Detect and InterSeal™
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