3 FN6659.3 November 22, 2011 Table of Contents Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Therma" />
參數(shù)資料
型號(hào): ISL12022IBZ-T
廠商: Intersil
文件頁(yè)數(shù): 23/29頁(yè)
文件大?。?/td> 0K
描述: IC RTC/CALENDAR TEMP SNSR 8-SOIC
應(yīng)用說(shuō)明: Addressing Power Issues in Real Time Clock Appls
產(chǎn)品培訓(xùn)模塊: Solutions for Industrial Control Applications
標(biāo)準(zhǔn)包裝: 2,500
類型: 時(shí)鐘/日歷
特點(diǎn): 警報(bào)器,夏令時(shí),閏年,SRAM
存儲(chǔ)容量: 128B
時(shí)間格式: HH:MM:SS(12/24 小時(shí))
數(shù)據(jù)格式: YY-MM-DD-dd
接口: I²C,2 線串口
電源電壓: 2.7 V ~ 5.5 V
電壓 - 電源,電池: 1.8 V ~ 5.5 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SOIC
包裝: 帶卷 (TR)
ISL12022
3
FN6659.3
November 22, 2011
Table of Contents
I2C Interface Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
X1, X2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
VBAT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
IRQ/FOUT (Interrupt Output/Frequency Output) . . . . . . . . . . . 9
Serial Clock (SCL). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Serial Data (SDA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
VDD, GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Power Control Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Normal Mode (VDD) to Battery-Backup Mode (VBAT). . . . . . . 10
Battery-Backup Mode (VBAT) to Normal Mode (VDD). . . . . . . 10
Power Failure Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Brownout Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Battery Level Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Single Event and Interrupt . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Frequency Output Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
General Purpose User SRAM . . . . . . . . . . . . . . . . . . . . . . . . . . 11
I2C Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Oscillator Compensation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Addresses [00h to 06h] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Addresses [07h to 0Fh] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Status Register (SR) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Interrupt Control Register (INT). . . . . . . . . . . . . . . . . . . . . . . . 15
VDD Brownout Trip Voltage BITS (VDDTrip<2:0) . . . . . . . . . . 16
Initial AT and DT Setting Register (ITRO) . . . . . . . . . . . . . . . . 16
BETA Register (BETA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Final Analog Trimming Register (FATR). . . . . . . . . . . . . . . . . 19
Final Digital Trimming Register (FDTR) . . . . . . . . . . . . . . . . . 19
ALARM Registers (10h to 15h) . . . . . . . . . . . . . . . . . . . . . . . . 20
DST Control Registers (DSTCR) . . . . . . . . . . . . . . . . . . . . . . . . 21
TEMP Registers (TEMP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
NPPM Registers (NPPM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
XT0 Registers (XT0) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
ALPHA Hot Register (ALPHAH) . . . . . . . . . . . . . . . . . . . . . . . . 23
Addresses [00h to 7Fh] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
I2C Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Protocol Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Power Supply Considerations . . . . . . . . . . . . . . . . . . . . . . . . . 25
Battery-Backup Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Oscillator Crystal Requirements . . . . . . . . . . . . . . . . . . . . . . . 26
Layout Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Crystal Oscillator Frequency Compensation . . . . . . . . . . . . . 27
Measuring Oscillator Accuracy . . . . . . . . . . . . . . . . . . . . . . . . 27
Temperature Compensation Operation . . . . . . . . . . . . . . . . . 28
Daylight Savings Time (DST) Example . . . . . . . . . . . . . . . . . . 28
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