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ISL12022MIBZ-TR5421 PDF预览

ISL12022MIBZ-TR5421

更新时间: 2024-12-01 11:11:39
品牌 Logo 应用领域
英特矽尔 - INTERSIL 电池静态存储器
页数 文件大小 规格书
29页 396K
描述
Low Power RTC with Battery Backed SRAM, Integrated 5ppm

ISL12022MIBZ-TR5421 数据手册

 浏览型号ISL12022MIBZ-TR5421的Datasheet PDF文件第2页浏览型号ISL12022MIBZ-TR5421的Datasheet PDF文件第3页浏览型号ISL12022MIBZ-TR5421的Datasheet PDF文件第4页浏览型号ISL12022MIBZ-TR5421的Datasheet PDF文件第5页浏览型号ISL12022MIBZ-TR5421的Datasheet PDF文件第6页浏览型号ISL12022MIBZ-TR5421的Datasheet PDF文件第7页 
Low Power RTC with Battery Backed SRAM,  
Integrated ±5ppm Temperature Compensation and  
Auto Daylight Saving  
ISL12022MR5421  
Features  
• Embedded 32.768kHz Quartz Crystal in the Package  
The ISL12022MR5421 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 SOIC 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 SOIC Package (for DFN version, refer to the  
ISL12020M)  
• 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  
The ISL12022MR5421 has redesign package to increase  
Contact and Air Discharge ESD performance.  
• Utility Meters  
• POS Equipment  
• Printers and Copiers  
• Digital Cameras  
Related Literature  
• See AN1549 “Addressing Power Issues in Real Time  
Clock Applications”  
Typical Application Circuit  
Performance Curve  
OSCILLATOR ERROR vs TEMPERATURE  
5
1
2
3
4
5
20  
19  
18  
17  
16  
4
3
2
1
GND  
GND  
GND  
GND  
GND  
NC  
GND  
NC  
3.3V  
NC  
NC  
C1  
0.1µF  
SCHOTTKY DIODE  
BAT54  
V
= 5.5V  
BAT  
6
7
15  
14  
R1 R2 R3  
10k 10k 10k  
0
-1  
-2  
-3  
-4  
-5  
GND  
GND  
V
V
DD  
BAT  
V
= 2.7V  
8
9
13  
12  
11  
BATTERY  
3.0V  
C2  
0.1µF  
DD  
60  
VDO  
SCL  
GND IRQ/F  
OUT  
MCU  
INTERFACE  
NC  
SCL  
10  
NC  
SDA  
V
= 3.3V  
SDA  
GND  
DD  
ISL12022MR5421  
IRQ/F  
OUT  
-40  
-20  
0
20  
40  
80  
TEMPERATURE (°C)  
June 4, 2010  
FN7576.1  
These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.  
1
1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc.  
2
I C Bus is a registered trademark owned by NXP Semiconductors Netherlands, B.V.  
Copyright Intersil Americas Inc. 2010. All Rights Reserved.  
All other trademarks mentioned are the property of their respective owners.  

ISL12022MIBZ-TR5421 替代型号

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