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ISL1218IBZ

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21
1
®
FN6313.0
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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| Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2006. All Rights Reserved
All other trademarks mentioned are the property of their respective owners.
ISL1218
I
2
C
®
Real Time Clock/Calendar
Low Power RTC with Battery Backed
SRAM
The ISL1218 device is a low power real time clock with
timing and crystal compensation, clock/calendar, power fail
indicator, periodic or polled alarm, intelligent battery backup
switching and battery-backed user SRAM.
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
ISL1218
(8 LD MSOP, SOIC)
TOP VIEW
Features
• Real Time Clock/Calendar
- Tracks Time in Hours, Minutes, and Seconds
- Day of the Week, Day, Month, and Year
• 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
• 8 Bytes Battery-Backed User SRAM
•I
2
C Interface
- 400kHz Data Transfer Rate
• 400nA Battery Supply Current
• Same Pin Out as ST M41Txx and Maxim DS13xx Devices
• Small Package Options
- 8 Ld MSOP and SOIC Packages
• Pb-Free Plus Anneal Available (RoHS Compliant)
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
Ordering Information
PART
NUMBER
(Note)
PART
MARKING
V
DD
RANGE
TEMP.
RANGE
(°C)
PACKAGE
(Pb-Free)
ISL1218IBZ 1218IBZ 2.7V to
5.5V
-40 to +85 8 Ld SOIC
ISL1218IBZ-T 1218IBZ 2.7V to
5.5V
-40 to +85 8 Ld SOIC
Tape and Reel
ISL1218IUZ 1218Z 2.7V to
5.5V
-40 to +85 8 Ld MSOP
ISL1218IUZ-T 1218Z 2.7V to
5.5V
-40 to +85 8 Ld MSOP
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.
1
2
3
4
8
7
X1
X2
V
BAT
V
DD
IRQ/F
OUT
SCL
SDA
GND
5
6
Data Sheet June 22, 2006
2
FN6313.0
June 22, 2006
Block Diagram
I
2
C
INTERFACE
RTC
CONTROL
LOGIC
ALARM
FREQUENCY
OUT
RTC
DIVIDER
SDA
BUFFER
CRYSTAL
OSCILLATOR
POR
SWITCH
SCL
BUFFER
SDA
SCL
X1
X2
V
DD
V
BAT
IRQ/
F
OUT
INTERNAL
SUPPLY
V
TRIP
SECONDS
MINUTES
HOURS
DAY OF WEEK
DATE
MONTH
YEAR
USER
SRAM
CONTROL
REGISTERS
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. X1 can also be driven directly from a 32.768kHz source.
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.
3V
BAT
This input provides a backup supply voltage to the device. V
BAT
supplies power to the device in the event that the
V
DD
supply fails. This pin should be tied to ground if not used.
4 GND Ground.
5 SDA Serial Data (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.
6 SCL The Serial Clock (SCL) input is used to clock all serial data into and out of the device.
7IRQ
/F
OUT
Interrupt Output/Frequency Output is a multi-functional pin that can be used as interrupt or frequency output pin. The
function is set via the configuration register.
8V
DD
Power supply.
ISL1218
3
FN6313.0
June 22, 2006
Absolute Maximum Ratings Thermal Information
Voltage on V
DD
, V
BAT
, SCL, SDA, and IRQ/F
OUT
Pins
(respect to ground). . . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7.0V
Voltage on X1 and X2 Pins
(respect to ground). . . . . . . . . . . .-0.5V to V
DD
+ 0.5 (V
DD
Mode)
-0.5V to V
BAT
+ 0.5 (V
BAT
Mode)
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C
Lead Temperature (Soldering, 10s) . . . . . . . . . . . . . . . . . . . . .300°C
ESD Rating (Human Body Model) . . . . . . . . . . . . . . . . . . . . . . .>2kV
ESD Rating (Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . .>175V
Thermal Resistance (Typical, Note 1)
θ
JA
(°C/W)
8 Ld MSOP Package . . . . . . . . . . . . . . . . . . . . . . . . 130
8 Ld SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . 110
Moisture Sensitivity for MSOP Package
(see Technical Brief TB363). . . . . . . . . . . . . . . . . . . . . . . . Level 2
Moisture Sensitivity for SOIC Package
(see Technical Brief TB363). . . . . . . . . . . . . . . . . . . . . . . . Level 1
Maximum Junction Temperature (Plastic Package). . . . . . . . . 150°C
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1. θ
JA
is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
DC Operating Characteristics – RTC Temperature = -40°C to +85°C, unless otherwise stated.
SYMBOL PARAMETER CONDITIONS MIN
TYP
(Note 5) MAX UNITS NOTES
V
DD
Main Power Supply 2.7 5.5 V
V
BAT
Battery Supply Voltage 1.8 5.5 V
I
DD1
Supply Current V
DD
= 5V 2 6 µA 2, 3
V
DD
= 3V 1.2 4 µA
I
DD2
Supply Current With I
2
C Active V
DD
= 5V 40 120 µA 2, 3
I
DD3
Supply Current (Low Power Mode) V
DD
= 5V, LPMODE = 1 1.4 5 µA 2, 7
I
BAT
Battery Supply Current V
BAT
= 3V 400 950 nA 2
I
BATLKG
Battery Input Leakage V
DD
= 5.5V, V
BAT
= 1.8V 100 nA
I
LI
Input Leakage Current on SCL 100 nA
I
LO
I/O Leakage Current on SDA 100 nA
V
TRIP
V
BAT
Mode Threshold 1.6 2.2 2.64 V
V
TRIPHYS
V
TRIP
Hysteresis 10 35 60 mV
V
BATHYS
V
BAT
Hysteresis 10 50 100 mV
IRQ
/F
OUT
V
OL
Output Low Voltage V
DD
= 5V, I
OL
= 3mA 0.4 V
V
DD
= 2.7V, I
OL
= 1mA 0.4 V
I
LO
Output Leakage Current V
DD
= 5.5V
V
OUT
= 5.5V
100 400 nA
Power-Down Timing Temperature = -40°C to +85°C, unless otherwise stated.
SYMBOL PARAMETER CONDITIONS MIN
TYP
(Note 5) MAX UNITS NOTES
V
DD SR-
V
DD
Negative Slewrate 10 V/ms 4
Serial Interface Specifications Over the recommended operating conditions unless otherwise specified.
SYMBOL PARAMETER TEST CONDITIONS MIN
TYP
(Note 5) MAX UNITS NOTES
SERIAL INTERFACE SPECS
V
IL
SDA and SCL Input Buffer LOW
Voltage
-0.3 0.3 x
V
DD
V
V
IH
SDA and SCL Input Buffer HIGH
Voltage
0.7 x
V
DD
V
DD
+
0.3
V
ISL1218
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21

ISL1218IBZ

Mfr. #:
Buy ISL1218IBZ
Manufacturer:
Renesas / Intersil
Description:
Real Time Clock REAL TIME CLKRTC IN 8LD
Lifecycle:
New from this manufacturer.
Delivery:
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