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Renesas Electronics Components Datasheet

ISL12032 Datasheet

Real Time Clock

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DATASHEET
ISL12032 Real Time Clock with 50/60 Hz clock and Crystal Backup
Low Power RTC with Battery Backed SRAM and 50/60 Cycle AC Input and Crystal Back-up
FN6618
Rev 3.00
May 5, 2011
The ISL12032 device is a low power real time clock with
50/60 AC input for timing synchronization. It also has an
oscillator utilizing an external crystal for timing back-up,
clock/calendar registers, intelligent battery back-up
switching, battery voltage monitor, brownout indicator,
integrated trickle charger for super capacitor, single periodic
or polled alarms, POR supervisory function, and up to 4
Event Detect with time stamp. There are 128 bytes of
battery-backed user SRAM.
The oscillator uses a 50/60 cycle sine wave input, backed by
an external, low-cost, 32.768kHz crystal. The real time clock
tracks time with separate registers for hours, minutes, and
seconds. The calendar registers contain the date, month,
year, and day of the week. The calendar is accurate through
year 2100, with automatic leap year correction and auto
daylight savings correction.
Pinout
X1
X2
VBAT
GND
AC
LV
EVIN
ISL12032
(14 LD TSSOP)
TOP VIEW
1 14 VDD
2 13 IRQ
3 12 SCL
4 11 SDA
5 10 ACRDY
6 9 FOUT
7 8 EVDET
Features
• 50/60 Cycle AC as a Primary Clock Input for RTC Timing
• Redundant Crystal Clock Input Selectable by User
- Dynamically Switch from AC Clock Input to Crystal in
Case of Power Failure
• Real Time Clock/Calendar
- Tracks Time in Hours, Minutes, Seconds and Tenths of
a Second
- Day of the Week, Day, Month, and Year
• Auto Daylight Saving Time Correction
- Programmable Forward and Backward Dates
• Security and Event Functions
- Event Detection with Time Stamp
- Stores First and Last Three Event Time Stamps
• Separate FOUT Pin
- 7 Selectable Frequency Outputs
• Dual Alarms with Hardware and Register Indicators
- Hardware Single Event or Pulse Interrupt Mode
• Automatic Backup to Battery or Super Capacitor
- VBAT Operation Down to 1.8V
- 1.0µA Battery Supply Current
• Two Battery Status Monitors with Selectable Levels
- Seven Selectable Voltages for Each Level
- 1st Level, Trip Points from 4.675V to 2.125V
- 2nd Level, Trip Points from 4.125V to 1.875V
• VDD Power Brownout Monitor
- Six Selectable Trip Levels, from 4.675V to 2.295V
• Time Stamp during Power-to-Battery and
Battery-to-Power Switchover
• Integrated Trickle Charger
- Four Selectable Charging Rates
• 128 Bytes Battery-Backed User SRAM
• I2C Interface
- 400kHz Data Transfer Rate
• Pb-free (RoHS compliant)
Applications
• Utility Meters
• Control Applications
• Security Related Applications
• Vending Machines
• White Goods
• Consumer Electronics
FN6618 Rev 3.00
May 5, 2011
Page 1 of 26


Renesas Electronics Components Datasheet

ISL12032 Datasheet

Real Time Clock

No Preview Available !

ISL12032 Real Time Clock with 50/60 Hz clock and Crystal Backup
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
ISL12032IVZ
PART MARKING
12032 IVZ
VDD RANGE
2.7V to 5.5V
TEMP RANGE
(°C)
-40 to +85
PACKAGE
(Pb-free)
14 Ld TSSOP
PKG DWG #
M14.173
NOTE:
1. Add “-T*” suffix for tape and reel. Please refer to TB347 for details on reel specifications.
2. 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.
3. For Moisture Sensitivity Level (MSL), please see device information page for ISL12032. For more information on MSL please see techbrief
TB363.
Block Diagram
SDA
SCL
SDA
BUFFER
SCL
BUFFER
I2C
INTERFACE
CONTROL
LOGIC
REGISTERS
X1
X2
VDD
VTRIP
VBAT
CRYSTAL
OSCILLATOR
POR/LV
COMPARE
RTC
DIVIDER
FREQUENCY
OUT
SWITCH
INTERNAL
SUPPLY
ALARM
AC
EVIN
GND
AC INPUT
BUFFER
AC POWER
QUALITY
EVALUATE
SECONDS
MINUTES
HOURS
DAY OF WEEK
DATE
MONTH
YEAR
CONTROL
REGISTERS
USER
SRAM
IRQ
FOUT
LV
ACRDY
EVDET
FN6618 Rev 3.00
May 5, 2011
Page 2 of 26


Part Number ISL12032
Description Real Time Clock
Maker Renesas
PDF Download

ISL12032 Datasheet PDF






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