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Renesas Electronics Components Datasheet

ISL1209 Datasheet

Low Power RTC

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DATASHEET
ISL1209
Low Power RTC with Battery Backed SRAM and Event Detection
FN6109
Rev 4.00
October 17, 2006
The ISL1209 device is a low power real time clock with event
detect function, timing and crystal compensation,
clock/calendar, power fail indicator, periodic or polled alarm,
intelligent battery backup switching and battery-backed user
SRAM.
NOTE: The oscillator uses an external, low-cost 32.768kHz crystal.
The real time clock 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.
Ordering Information
PART
NUMBER*
VDD
TEMP
PART RANGE RANGE
MARKING (V)
(°C)
PKG.
PACKAGE DWG. #
ISL1209IU10 AGT
2.7 to 5.5 -40 to +85 10 Ld MSOP M10.118
ISL1209IU10Z ANV
(Note)
2.7 to 5.5 -40 to +85 10 Ld MSOP M10.118
(Pb-free)
*Add “-TK” suffix for tape and reel.
NOTE: Intersil Pb-free plus anneal products employ special Pb-free
material sets; molding compounds/die attach materials and 100% matte
tin plate termination finish, which are RoHS compliant and compatible
with both SnPb and Pb-free soldering operations. Intersil Pb-free products
are MSL classified at Pb-free peak reflow temperatures that meet or
exceed the Pb-free requirements of IPC/JEDEC J STD-020.
Pinout
ISL1209
(10 LD MSOP)
TOP VIEW
X1 1
X2 2
VBAT
3
GND
EVIN
4
5
10 VDD
9 IRQ/FOUT
8 SCL
7 SDA
6 EVDET
Features
• Real Time Clock/Calendar
- Tracks Time in Hours, Minutes, and Seconds
- Day of the Week, Day, Month, and Year
• Security and Event Functions
- Tamper detection with Time Stamp
- Event Detection During Battery Packed or Normal
Modes
- Selectable Event Input Sampling Rates Allows Low
Power Operation
- Selectable Glitch Filter on Event Input Monitor
• 15 Selectable Frequency Outputs
• Single Alarm
- Settable to the Second, Minute, Hour, Day of the Week,
Day, or Month
- Single Event or Pulse Interrupt Mode
• Automatic Backup to Battery or Super Cap
• Power Failure Detection
• On-Chip Oscillator Compensation
• 2 Bytes Battery-Backed User SRAM
• I2C Interface
- 400kHz Data Transfer Rate
• 400nA Battery Supply Current
• Small Package
- 10 Ld MSOP
• Pb-Free Plus Anneal Available (RoHS Compliant)
Applications
• Utility Meters
• Set Top Box/Modem
• POS Equipment
• Network Routers, Hubs, Switches, Bridges
• Cellular Infrastructure Equipment
• Fixed Broadband Wireless Equipment
• Test Meters/Fixtures
• Vending Machine Management
• Security and Anti Tampering Applications
- Panel/Enclosure Status
- Warranty Reporting
- Time Stamping Applications
- Patrol/Security Check (Fire or Light Equipment)
- Automotive Applications
FN6109 Rev 4.00
October 17, 2006
Page 1 of 25


Renesas Electronics Components Datasheet

ISL1209 Datasheet

Low Power RTC

No Preview Available !

ISL1209
Block Diagram
SDA
SCL
SDA
BUFFER
SCL
BUFFER
I2C
INTERFACE
CONTROL
LOGIC
X1
X2
VDD
VTRIP
VBAT
CRYSTAL
OSCILLATOR
RTC
DIVIDER
POR
FREQUENCY
OUT
SWITCH
INTERNAL
SUPPLY
ALARM
EVIN
GND
Seconds
Minutes
Hours
Day of Week
Date
Month
Year
CONTROL
REGISTERS
USER
SRAM
IRQ/
FOUT
EVDET
Pin Descriptions
PIN
NUMBER
SYMBOL
DESCRIPTION
1 X1 X1. The X1 pin is the input of an inverting amplifier and is intended to be connected to one pin of an external
32.768kHz quartz crystal. X1 can also be driven directly from a 32.768kHz source.
2 X2 X2. The X2 pin is the output of an inverting amplifier and is intended to be connected to one pin of an external
32.768kHz quartz crystal. X2 should be left open when X1 is driven from external source.
3
VBAT
VBAT. This input provides a backup supply voltage to the device. VBAT supplies power to the device in the event that
the VDD supply fails. This pin should be tied to ground if not used.
4
GND
Ground.
5
EVIN
Event Input (EVIN). The EVIN is an input pin that is used to detect an externally monitored event. When a high signal
is present at the EVIN pin an “event” is detected.
6 EVDET Event Detect Output, active when EVIN is triggered. Open drain output.
7
SDA
Serial Data (SDA). SDA is a bidirectional pin used to transfer serial data into and out of the device. It has an open
drain output and may be wire OR’ed with other open drain or open collector outputs.
8 SCL Serial Clock (SCL). The SCL input is used to clock all serial data into and out of the device.
9 IRQ/FOUT Interrupt Output IRQ, /Frequency Output FOUT. Multi-functional pin that can be used as interrupt or frequency
output pin. The function is set via the configuration register.
10
VDD
VDD. Power supply.
FN6109 Rev 4.00
October 17, 2006
Page 2 of 25


Part Number ISL1209
Description Low Power RTC
Maker Renesas
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ISL1209 Datasheet PDF






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