ISL12032IVZ-T Intersil, ISL12032IVZ-T Datasheet

IC RTC LP BATT BACK SRAM 14TSSOP

ISL12032IVZ-T

Manufacturer Part Number
ISL12032IVZ-T
Description
IC RTC LP BATT BACK SRAM 14TSSOP
Manufacturer
Intersil
Type
Clock/Calendar/NVSRAMr
Datasheet

Specifications of ISL12032IVZ-T

Memory Size
1K (128 x 8)
Time Format
HH:MM:SS:hh (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
Other names
ISL12032IVZ-TTR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ISL12032IVZ-T
Manufacturer:
Intersil
Quantity:
11 856
Low Power RTC with Battery Backed
SRAM and 50/60 Cycle AC Input and Xtal
Back-up
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
VBAT
EVIN
GND
AC
X1
X2
LV
1
2
3
4
5
6
7
(14 LD TSSOP)
TOP VIEW
ISL12032
®
1
14
13
12
11
10
9
8
Data Sheet
Real Time Clock with 50/60 Hz clock and Crystal Backup
V
IRQ
SCL
SDA
ACRDY
F
EVDET
DD
OUT
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Features
• 50/60 Cycle AC as a Primary Clock Input for RTC Timing
• Redundant Crystal Clock Input Selectable by User
• Real Time Clock/Calendar
• Auto Daylight Saving Time Correction
• Security and Event Functions
• Separate F
• Dual Alarms with Hardware and Register Indicators
• Automatic Backup to Battery or Super Capacitor
• Two Battery Status Monitors with Selectable Levels
• V
• Time Stamp during Power-to-Battery and
• Integrated Trickle Charger
• 128 Bytes Battery-Backed User SRAM
• I
• Pb-free (RoHS compliant)
Applications
• Utility Meters
• Control Applications
• Security Related Applications
• Vending Machines
• White Goods
• Consumer Electronics
- Dynamically Switch from AC Clock Input to Crystal in
- Tracks Time in Hours, Minutes, Seconds and Tenths of
- Day of the Week, Day, Month, and Year
- Programmable Forward and Backward Dates
- Event Detection with Time Stamp
- Stores First and Last Three Event Time Stamps
- 7 Selectable Frequency Outputs
- Hardware Single Event or Pulse Interrupt Mode
- VBAT Operation Down to 1.8V
- 1.0µA Battery Supply Current
- 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
- Six Selectable Trip Levels, from 4.675V to 2.295V
Battery-to-Power Switchover
- Four Selectable Charging Rates
- 400kHz Data Transfer Rate
2
DD
C Interface
Case of Power Failure
a Second
Power Brownout Monitor
All other trademarks mentioned are the property of their respective owners.
April 16, 2009
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
OUT
Copyright Intersil Americas Inc. 2007-2009. All Rights Reserved
Pin
ISL12032
FN6618.2

Related parts for ISL12032IVZ-T

ISL12032IVZ-T Summary of contents

Page 1

... CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 All other trademarks mentioned are the property of their respective owners. ISL12032 FN6618.2 Pin OUT | Intersil (and design registered trademark of Intersil Americas Inc. Copyright Intersil Americas Inc. 2007-2009. All Rights Reserved ...

Page 2

... PART NUMBER (Note) PART MARKING ISL12032IVZ* 12032 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

Functional Pin Descriptions PIN NUMBER SYMBOL 1 X1 The input of an inverting amplifier and is intended to be connected to one pin of an external 32.768kHz quartz crystal. X1 also can be driven directly from a 32.768kHz source with ...

Page 4

... Trickle Charge ON-OFF Hysteresis 4 ISL12032 Thermal Information Thermal Resistance (Typical, Note TSSOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-65°C to +150°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp Recommended Operating Conditions Temperature (T Supply Voltage (V Supply Voltage (VBAT 1.8V to 5.5V Specifications apply for 2.7V to 5.5V ...

Page 5

DC Operating Characteristics SYMBOL PARAMETER IRQ/ACRDY/LV/EVDET (OPEN DRAIN OUTPUTS) V Output Low Voltage OL F (CMOS OUTPUT) OUT V Output Low Voltage OL V Output High Voltage OH EVIN I EVIN Pull-up Current EVPU V Input Low Voltage IL V ...

Page 6

I C Interface Specifications Specifications apply for: V (Continued) SYMBOL PARAMETER t Clock HIGH Time HIGH t START Condition Setup Time SU:STA t START Condition Hold Time HD:STA t Input Data Setup Time SU:DAT t Input Data Hold Time ...

Page 7

SDA vs SCL Timing t F SCL t SU:STA t HD:STA SDA (INPUT TIMING) SDA (OUTPUT TIMING) Symbol Table WAVEFORM INPUTS Must be steady May change from LOW to HIGH May change from HIGH to LOW Don’t Care: Changes Allowed ...

Page 8

General Description 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, ...

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 ISL12032 for years. Another option is to use a Super Capacitor for applications where V for month. See the “ ...

Page 10

Brownout Detection The ISL12032 monitors the V level continuously and DD provides a warning if the V level drops below prescribed DD levels. There are six levels that can be selected for the trip level. These values are 85% below ...

Page 11

REGISTER ACCESS The contents of the registers can be modified by performing a byte or a page write operation directly to any register address. The registers are divided into 10 sections. They are: 1. Real Time Clock (8 bytes): Address ...

Page 12

TABLE 1. REGISTER MEMORY MAP (X indicates writes to these bits have no effect on the device) REG ADDR SECTION NAME 7 00h SC 0 01h MN 0 02h HR MIL 03h DT 0 RTC 04h MO 0 05h YR ...

Page 13

TABLE 1. REGISTER MEMORY MAP (X indicates writes to these bits have no effect on the device) (Continued) REG ADDR SECTION NAME 7 23h SCA1 ESCA1 24h MNA1 EMNA1 25h HRA1 EHRA1 Alarm1 26h DTA1 EDTA1 27h MOA1 EMOA1 28h ...

Page 14

TABLE 2. STATUS REGISTER DC (SRDC) ADDR 08h BMODE DSTADJ ALM1 ALM0 LVDD LBAT85 LBAT75 RTCF BATTERY ACTIVE MODE (BMODE) BMODE Indicates that the device is operating from the VBAT input. A “1” indicates Battery Mode ...

Page 15

Event Count (EVTCNT) TABLE 5. EVENT COUNTER REGISTER (EVTCNT) ADDR 0Bh EVC7 EVC6 EVC5 EVC4 EVC3 EVC2 EVC1 EVC0 The EVTCNT register increments automatically each time an event occurs. The register is set to 00h on ...

Page 16

Event Detection Register (EVIC) TABLE 9. EVENT DETECTION REGISTER (EVIC) ADDR 0Eh X EVBATB EVIM EVEN EHYS1 EHYS0 ESMP1 ESMP0 EVENT OUTPUT IN BATTERY MODE ENABLE BIT (EVBATB) This bit enables/disables the EVDET pin during ...

Page 17

V – BAT -------------------------------- - I = MAX R OUT Where the R is the selected resistor between V OUT VBAT. Table 14 gives the typical resistor values for V and VBAT = 3.0V. Note that the resistor ...

Page 18

TABLE 18. VB85T VBAT WARNING LEVELS VB85Tp2 VB85Tp1 VB85Tp0 BATTERY LEVEL MONITOR TRIP BITS (VB75TP <2:0>) Three bits selects ...

Page 19

ACFP = 11b (10 total AC cycles) So the resulting crystal cycle count must be within: ±(10 AC cycles x 2 crystal cycles/AC cycle) or ± 20 total crystal cycles (error budget) as shown in Table 23. TABLE 23. AC/CRYSTAL ...

Page 20

DstHrFd controls the hour that DST begins. It includes the MIL bit, which is in the corresponding RTC register. The RTC hour and DstHrFd registers need to match formats (Military or AM/PM) in order for the DST function to work. ...

Page 21

Example 1 • Alarm set with single interrupt (IM = ”0”) • A single alarm will occur on January 1 at 11:30am. • Set Alarm registers as follows: BIT ALARM REGISTER HEX ...

Page 22

Protocol Conventions Data states on the SDA line can change only during SCL LOW periods. SDA state changes during SCL HIGH are reserved for indicating START and STOP conditions (see Figure 6). On power-up of the ISL12032, the SDA pin ...

Page 23

Device Addressing Following a start condition, the master must output a Slave Address Byte. The 7 MSBs are the device identifier. These bits are “1101111b” for the RTC registers and “1010111b” for the User SRAM. The last bit of the ...

Page 24

Application Section Oscillator Crystal Requirements The ISL12032 uses a standard 32.768kHz crystal. Either through hole or surface mount crystals can be used. Table 28 lists some recommended surface mount crystals and the parameters of each. This list is not exhaustive ...

Page 25

FIGURE 11. AC INPUT USING A TRANSFORMER SECONDARY 120VAC 50/60Hz FIGURE 12. USING THE ISL12032 VIN (AC) = 1.5V CIN R1 ISL12032 R2 VDD C1 R1 CIN R2 SUPPLY TO GATE THE AC INPUT DD ...

Page 26

... 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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