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Renesas Electronics Components Datasheet

ISL12059 Datasheet

Low Cost and Low Power I2C Bus Real Time Clock/Calendar

No Preview Available !

ISL12059
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DATASHEET
FN6757
Low Cost and Low Power I2C Bus Real Time Clock/Calendar Low Power and Low
Cost RTC
Rev 0.00
Jun 15, 2009
The ISL12059 device is a low power real time clock with
clock/calendar, and 512Hz/digital output function.
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.
Pinout
ISL12059
(8 LD SOIC)
TOP VIEW
X1 1
X2 2
NC 3
GND 4
8 VDD
7 FT/OUT
6 SCL
5 SDA
Features
• Real Time Clock/Calendar
- Tracks Time in Hours, Minutes, and Seconds
- Day of the Week, Date, Month, and Year
• 512Hz Frequency Output
• I2C Bus
- 400kHz Data Transfer Rate
• Small Package Option
- 8 Ld SOIC Package
- Pb-Free (RoHS Compliant)
• Low Cost 3V Alternative to M41T00S, DS1340 and
ISL12008
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
• Point Of Sale Equipment
• Test Meters/Fixtures
• Office Automation (Copiers, Fax)
• Home Appliances
• Computer Products
• Other Industrial/Medical/Automotive
Ordering Information
.
PART
NUMBER
(Note)
PART
MARKING
VDD RANGE
(V)
TEMP. RANGE
(°C)
PACKAGE
(Pb-Free)
PKG.
DWG. #
ISL12059IBZ
12059 IBZ
1.4 to 3.6
-40 to +85
8 Ld SOIC
M8.15
ISL12059IBZ-T*
12059 IBZ
1.4 to 3.6
-40 to +85
8 Ld SOIC (Tape and Reel) M8.15
*Please refer to TB347 for details on reel specifications.
NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100%
matte tin plate plus anneal (e3 termination finish, which is 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.
FN6757 Rev 0.00
Jun 15, 2009
Page 1 of 11


Renesas Electronics Components Datasheet

ISL12059 Datasheet

Low Cost and Low Power I2C Bus Real Time Clock/Calendar

No Preview Available !

ISL12059
Block Diagram
SDA
SCL
SDA
BUFFER
SCL
BUFFER
I2C
INTERFACE
RTC
CONTROL
LOGIC
X1
X2
VDD
CRYSTAL
OSCILLATOR
POR
RTC
DIVIDER
FREQUENCY
OUT
INTERNAL
SUPPLY
SECONDS
MINUTES
HOURS
DAY OF WEEK
DATE
MONTH
YEAR
CONTROL
REGISTERS
FT/OUT
Pin Descriptions
PIN
NUMBER
SYMBOL
DESCRIPTION
1 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.
2 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.
3 NC No Connection. Can be connected to GND or left floating.
4
GND
Ground
5
SDA
Serial Data (SDA) is a bi-directional 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.
6 SCL The Serial Clock (SCL) input is used to clock all serial data into and out of the device.
7 FT/OUT 512Hz Frequency Output or digital output pin. The function is set via the configuration register. This pin is open drain
and requires an external pull-up resistor. It has a default output of high impedance at power-up.
8
VDD
Power supply
FN6757 Rev 0.00
Jun 15, 2009
Page 2 of 11


Part Number ISL12059
Description Low Cost and Low Power I2C Bus Real Time Clock/Calendar
Maker Renesas
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ISL12059 Datasheet PDF






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