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ISL12020MIRZ

更新时间： 2024-12-01 05:39:35
品牌 Logo 应用领域
英特矽尔 - INTERSIL 电池外围集成电路温度补偿静态存储器光电二极管时钟
页数 文件大小 规格书
32页 471K
描述
Low Power RTC with Battery Backed SRAM, Integrated ±5ppm Temperature Compensation and Auto Daylight Saving

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ISL12020MIRZ 数据手册

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Low Power RTC with Battery Backed SRAM,  
Integrated ±5ppm Temperature Compensation and  
Auto Daylight Saving  
ISL12020M  
Features  
• Embedded 32.768kHz Quartz Crystal in the Package  
The ISL12020M device is a low power real time clock  
(RTC) with an embedded temperature sensor and  
crystal. Device functions include oscillator compensation,  
clock/calendar, power fail and low battery monitors,  
brownout indicator, one-time, periodic or polled alarms,  
intelligent battery backup switching, Battery Reseal™  
function and 128 bytes of battery-backed user SRAM.  
The device is offered in a 20 Ld DFN module that  
contains the RTC and an embedded 32.768kHz quartz  
crystal. The calibrated oscillator provides less than  
±5ppm drift over the full -40°C to +85°C temperature  
range.  
• 20 Ld DFN Package (for SOIC version, refer to the  
ISL12022M)  
• Calendar  
• On-chip Oscillator Temperature Compensation  
• 10-bit Digital Temperature Sensor Output  
• 15 Selectable Frequency Outputs  
• Interrupt for Alarm or 15 Selectable Frequency  
Outputs  
• Automatic Backup to Battery or Supercapacitor  
• VDD and Battery Status Monitors  
The RTC tracks time with separate registers for hours,  
minutes, and seconds. The calendar registers track date,  
month, year and day of the week and are accurate  
through 2099, with automatic leap year correction.  
• Battery Reseal™ Function to Extend Battery Shelf  
Life  
• Power Status Brownout Monitor  
• Time Stamp for Battery Switchover  
• 128 Bytes Battery-Backed User SRAM  
Daylight Savings time adjustment is done automatically,  
using parameters entered by the user. Power fail and  
battery monitors offer user-selectable trip levels. The  
time stamp function records the time and date of  
2
• I C-Bus™  
• RoHS Compliant  
switchover from V  
to V power, and also from V  
DD  
BAT BAT  
to V  
DD  
power.  
Applications*(see page 31)  
• Utility Meters  
• POS Equipment  
• Printers and Copiers  
• Digital Cameras  
Typical Application Circuit  
Performance Curve  
OSCILLATOR ERROR vs TEMPERATURE  
5
1
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
X2  
X2  
X2  
X2  
X2  
NC  
X1  
X1  
X1  
X1  
X1  
NC  
4
3
2
1
2
3
4
3.3V  
5
C1  
0.1µF  
SCHOTTKY DIODE  
BAT54  
6
R1  
R2  
R3  
V
= 5.5V  
BAT  
10k 10k 10k  
0
-1  
-2  
-3  
-4  
-5  
7
V
V
DD  
BAT  
BATTERY  
3.0V  
C2  
8
V
= 2.7V  
DD  
60  
GND IRQ/F  
NC  
VDD  
SCL  
OUT  
SCL  
0.1µF  
9
MCU  
INTERFACE  
10  
V
= 3.3V  
NC  
SDA  
SDA  
GND  
DD  
ISL12020M  
IRQ/FOUT  
-40  
-20  
0
20  
40  
80  
TEMPERATURE (°C)  
February 11, 2010  
FN6667.4  
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
1
2
I C Bus™ is a trademark owned by NXP Semiconductors Netherlands, B.V.  
Copyright Intersil Americas Inc. 2008, 2009, 2010. All Rights Reserved  
All other trademarks mentioned are the property of their respective owners.  
1234567...32

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ISL12020MIRZ 替代型号

型号 品牌 替代类型 描述 数据表
ISL12020MIRZ-T INTERSIL

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