ISL12023IVZ Intersil, ISL12023IVZ Datasheet

IC RTC/CLDR TEMP SNSR 14-TSSOP

ISL12023IVZ

Manufacturer Part Number
ISL12023IVZ
Description
IC RTC/CLDR TEMP SNSR 14-TSSOP
Manufacturer
Intersil
Type
Clock/Calendarr
Datasheet

Specifications of ISL12023IVZ

Memory Size
1K (128 x 8)
Time Format
HH:MM:SS (12/24 hr)
Date Format
YY-MM-DD-dd
Interface
I²C, 2-Wire Serial
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
14-TSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL12023IVZ
Manufacturer:
Intersil
Quantity:
341
Low Power RTC with Battery-Backed SRAM
and Embedded Temp Compensation
with Auto Daylight Saving
The ISL12023 device is a low power real time clock with an
embedded Temp sensor for oscillator compensation,
clock/calendar, power fail, low battery monitor, brownout
indicator, single periodic or polled alarms, intelligent
battery-backup switching, Battery Reseal™ function and 128
bytes of 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.
Daylight Savings time adjustment is done automatically,
using parameters entered by the user. Power fail and battery
monitors offer user-selectable trip levels. A time stamp
function records the time and date of switchover from V
V
Pinout
BAT
power, and also from V
LVRST
V
GND
BAT
NC
NC
X1
X2
(14 LD TSSOP)
1
2
3
4
5
6
7
TOP VIEW
ISL12023
®
BAT
1
to V
Real Time Clock with On Chip Temp Compensation ±5ppm
14
13
12
10
11
9
8
Data Sheet
DD
power.
NC
V
IRQ
SCL
SDA
F
NC
DD
OUT
±
5
ppm
1-888-INTERSIL or 1-888-468-3774
DD
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
to
Features
• Real Time Clock/Calendar
• On-chip Oscillator Compensation Over the Operating
• 10-bit Digital Temperature Sensor Output
• Customer Programmable Day Light Saving Time
• Clock Output with 15 Selectable Frequencies
• 1 Alarm
• Battery Reseal™ Function to Extend Battery Shelf Life
• Automatic Backup to Battery or Super Capacitor
• Battery Status Monitor
• Power Status Brownout Monitor
• Oscillator Failure Detection
• Time Stamp for First V
• 128 Bytes Battery-Backed User SRAM
• Separate F
• I
• 14 Ld TSSOP Package
• Pb-Free (RoHS Compliant)
Applications
• Utility Meters
• POS Equipment
• Medical Devices
• Security Systems
• Vending Machines
• White Goods
• Printers and Copiers
- Tracks Time in Hours, Minutes and Seconds
- Day of the Week, Day, Month and Year
Temp Range
- ±5ppm Over -40°C to +85°C
- ±2°C Accuracy
- Settable to the Second, Minute, Hour, Day of the Week,
- Single Event or Pulse Interrupt Mode
- Operation to V
- 1.0µA Battery Supply Current
- 2 User Programmable Levels
- Seven Selectable Voltages for Each Level
- Six Selectable Trip Levels, from 2.295V to 4.675V
- 400kHz Clock Frequency
2
C Bus™
Day, or Month
I
2
All other trademarks mentioned are the property of their respective owners.
June 24, 2009
C Bus™ is a trademark owned by NXP Semiconductors Netherlands, B.V.
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
OUT
Copyright Intersil Americas Inc. 2008, 2009. All Rights Reserved
, IRQ, and LVRST Outputs
BAT
= 1.8V
DD
to V
BAT
, and Last V
ISL12023
FN6682.2
BAT
to V
DD

Related parts for ISL12023IVZ

ISL12023IVZ Summary of contents

Page 1

... All other trademarks mentioned are the property of their respective owners. ISL12023 FN6682.2 = 1.8V BAT and Last V DD BAT BAT , IRQ, and LVRST Outputs OUT Intersil (and design registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2008, 2009. All Rights Reserved ...

Page 2

... PART NUMBER PART (Note) MARKING ISL12023IVZ* 12023 IVZ *Add “-T” suffix for tape and reel. 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) ...

Page 3

... Temp Temperature Sensor Accuracy IRQ, LVRST, F OUT V Output Low Voltage OL 3 ISL12023 Thermal Information Thermal Resistance (Typical, Note TSSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C + 0.3V Pb-free Reflow Profile . . . . . . . . . . . . . . . . . . . . . . . . .see link below DD http://www.intersil.com/pbfree/Pb-FreeReflow.asp Test Conditions +2.7V to +5.5V CONDITIONS (Note 11) (Note 11 not Active) ...

Page 4

Power-Down Timing Test Conditions: V SYMBOL PARAMETER V V Negative Slew Rate DD SR Interface Specifications Test Conditions: V SYMBOL PARAMETER V SDA and SCL Input Buffer LOW IL Voltage V SDA and SCL Input Buffer ...

Page 5

I C Interface Specifications Test Conditions: V SYMBOL PARAMETER t STOP Condition Hold Time HD:STO t Output Data Hold Time DH t SDA and SCL Rise Time R t SDA and SCL Fall Time F Cb Capacitive Loading of ...

Page 6

SDA vs SCL Timing t F SCL t SU:STA t HD:STA SDA (INPUT TIMING) SDA (OUTPUT TIMING) EQUIVALENT AC OUTPUT LOAD CIRCUIT FOR V 5.0V 1533Ω SDA, IRQ AND FOUT 100pF FIGURE 1. STANDARD OUTPUT LOAD FOR TESTING THE DEVICE ...

Page 7

Typical Performance Curves 1050 1000 950 900 850 800 1.8 2.3 2.8 3.3 3.8 V VOLTAGE (V) BAT FIGURE BAT 5.5V BAT 3. -40 -20 0 ...

Page 8

Typical Performance Curves 110 100 -40 - TEMPERATURE (°C) FIGURE 8. I WITH TSE = 1 vs TEMPERATURE DD General Description The ISL12023 device ...

Page 9

... Power Control Operation The power control circuit accepts Many types of batteries can be used with Intersil RTC products. For example, 3.0V or 3.6V Lithium batteries are appropriate, and battery sizes are available that can power the ISL12023 for years. Another option is to use a super capacitor for applications where month. See the “ ...

Page 10

The device Time Stamps the switchover from V and and the time is stored in t BAT DD registers respectively. If multiple V DD sequences occur before status is read, the earliest V V power-down time ...

Page 11

General Purpose User SRAM The ISL12023 provides 128 bytes of user SRAM. The SRAM will continue to operate in battery-backup mode. However should be noted that the I C bus is disabled in battery-backup mode ...

Page 12

REG ADDR. SECTION NAME 7 07h SR BUSY 08h INT ARST 09h PWR_VDD CLRTS 0Ah PWR_VBAT 0Bh ITRO IDTR01 CSR 0Ch ALPHA D 0Dh BETA TSE 0Eh FATR 0 0Fh FDTR 0 10h SCA0 ESCA0 11h MNA0 EMNA0 12h HRA0 ...

Page 13

Real Time Clock Registers Addresses [00h to 06h] RTC REGISTERS (SC, MN, HR, DT, MO, YR, DW) These registers depict BCD representations of the time. As such, SC (Seconds) and MN (Minutes) range from 0 to 59, HR (Hour) can ...

Page 14

Example - When the LBAT85 is Set To “1” In Battery Mode: The minute the register changes to 19h when the device is in battery mode, the LBAT85 is set to “1” the next time the device switches back to ...

Page 15

TABLE 5. FREQUENCY SELECTION OF F FREQUENCY, F UNITS FO3 FO2 OUT 1024 ...

Page 16

Initial AT and DT Setting Register (ITRO) These bits are used to trim the initial error (at room temperature) of the crystal. Both Digital Trimming (DT) and Analog Trimming (AT) methods are available. The digital trimming uses clock pulse skipping ...

Page 17

TABLE 12. IATRO TRIMMING RANGE (Continued) IATR05 IATR04 IATR03 IATR02 IATR01 IATR00 ALPHA Register (ALPHA) TABLE 13. ALPHA REGISTER ADDR ...

Page 18

BETA values are limited in the range from 01000 to 11111 as . shown in Table 16 To use Table 16, the device is tested at two AT settings as follows: BETA VALUES = (AT(max) - AT(min))/63, where: AT(max) = ...

Page 19

ALARM Registers (10h to 15h) The alarm register bytes are set up identical to the RTC register bytes, except that the MSB of each byte functions as an enable bit (enable = “1”). These enable bits specify which alarm registers ...

Page 20

Set CLRTS = 1 to clear this register (add 09h, PWR_V register). DD DST Control Registers (DSTCR) 8 bytes of control registers have been assigned for the Daylight Savings Time (DST) functions. DST beginning (set Forward) time ...

Page 21

DST Day/Week Reverse DstDwRv contains both the Day of the Week and the Week of the Month data for DST Reverse control. DST can be controlled either by actual date or by setting both the Week of the month and ...

Page 22

TABLE 24. XT0 VALUES XT<4:0> TURNOVER TEMPERATURE 01111 01110 01101 01100 01011 01010 01001 01000 00111 00110 00101 00100 00011 00010 00001 00000 10000 10001 10010 10011 10100 10101 10110 10111 11000 11001 11010 11011 11100 11101 11110 11111 ALPHA ...

Page 23

An acknowledge (ACK software convention used to indicate a successful data transfer. The transmitting device, either ...

Page 24

FIGURE 17. SLAVE ADDRESS, WORD ADDRESS, AND DATA BYTES After loading the entire Slave Address Byte from the ...

Page 25

Otherwise, the device may lose serial bus communications once V is powered up, and will return to normal operation DD ONLY once V and V are both powered down together. DD BAT V = 2.7V ISL12023 J DD BAT TO ...

Page 26

Where α is the temperature constant, with a typical value of 0.034 ppm/° the turnover temperature of the crystal, which is the 0 apex of the parabolic curve. If the two factors α and T known ...

Page 27

... For further information on the operation of the ISL12023 and temperature compensated RTC’s, see Intersil Application Note AN1389, “Using Intersil’s High Accuracy Real Time Clock Module”. http://www.intersil.com/data/an/AN1389.pdf Daylight Savings Time (DST) Example ...

Page 28

... Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use ...

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