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X1227S8IZ-2.7AT1 PDF预览

X1227S8IZ-2.7AT1

更新时间: 2024-02-16 00:12:17
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页数 文件大小 规格书
28页 419K
描述
2-Wire RTC Real TimeClock/Calendar/CPU Supervisor with EEPROM

X1227S8IZ-2.7AT1 数据手册

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X1227  
®
Data Sheet  
September 15, 2005  
FN8099.1  
PRELIMINARY  
APPLICATIONS  
2-Wire RTC Real TimeClock/Calendar/  
CPU Supervisor with EEPROM  
• Utility Meters  
• HVAC Equipment  
• Audio / Video Components  
• Set Top Box / Television  
• Modems  
• Network Routers, Hubs, Switches, Bridges  
• Cellular Infrastructure Equipment  
• Fixed Broadband Wireless Equipment  
• Pagers / PDA  
• POS Equipment  
• Test Meters / Fixtures  
• Office Automation (Copiers, Fax)  
• Home Appliances  
• Computer Products  
FEATURES  
• Real Time Clock/Calendar  
— Tracks time in Hours, Minutes, and Seconds  
— Day of the Week, Day, Month, and Year  
• 2 Polled Alarms (Non-volatile)  
— Settable on the Second, Minute, Hour, Day of the  
Week, Day, or Month  
— Repeat Mode (periodic interrupts)  
• Oscillator Compensation on chip  
— Internal feedback resistor and compensation  
capacitors  
— 64 position Digitally Controlled Trim Capacitor  
— 6 digital frequency adjustment settings to ±30ppm  
• CPU Supervisor Functions  
— Power-on Reset, Low Voltage Sense  
— Watchdog Timer (SW Selectable: 0.25s, 0.75s,  
1.75s, off)  
• Battery Switch or Super Cap Input  
• 512 x 8 Bits of EEPROM  
— 64-Byte Page Write Mode  
— 8 modes of Block Lock™ Protection  
— Single Byte Write Capability  
• Other Industrial / Medical / Automotive  
DESCRIPTION  
The X1227 device is a Real Time Clock with  
clock/calendar, two polled alarms with integrated 512x8  
EEPROM, oscillator compensation, CPU Supervisor  
(POR/LVS and WDT) and battery backup switch.  
• High Reliability  
— Data Retention: 100 years  
The oscillator uses an external, low-cost 32.768kHz  
crystal. All compensation and trim components are  
integrated on the chip. This eliminates several external  
discrete components and a trim capacitor, saving  
board area and component cost.  
— Endurance: 100,000 cycles per byte  
• 2-Wire™ Interface interoperable with I2C*  
— 400kHz data transfer rate  
• Low Power CMOS  
— 1.25µA Operating Current (Typical)  
• Small Package Options  
— 8-Lead SOIC and 8-Lead TSSOP  
• Repetitive Alarms  
• Temperature Compensation  
• Pb-Free Plus Anneal Available (RoHS Compliant)  
BLOCK DIAGRAM  
OSC  
Compensation  
X1  
Timer  
Calendar  
Logic  
Battery  
Switch  
Circuitry  
Time  
Keeping  
Registers  
VCC  
Frequency  
Divider  
1Hz  
Oscillator  
32.768kHz  
VBACK  
X2  
(SRAM)  
Status  
Control/  
Control  
Decode  
Logic  
Compare  
Serial  
Interface  
Decoder  
Registers  
SCL  
SDA  
Registers  
Alarm  
(EEPROM)  
(SRAM)  
Alarm Regs  
(EEPROM)  
8
4K  
EEPROM  
ARRAY  
Watchdog  
Timer  
Low Voltage  
Reset  
RESET  
CAUTION: 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.  
Copyright Intersil Americas Inc. 2005. All Rights Reserved  
*I2C is a Trademark of Philips. All other trademarks mentioned are the property of their respective owners.  

X1227S8IZ-2.7AT1 替代型号

型号 品牌 替代类型 描述 数据表
X1227S8I-2.7 INTERSIL

完全替代

2-Wire RTC Real TimeClock/Calendar/CPU Supervisor with EEPROM
X1227S8IZ-2.7 INTERSIL

完全替代

2-Wire RTC Real TimeClock/Calendar/CPU Supervisor with EEPROM
X1227S8-2.7 INTERSIL

完全替代

2-Wire RTC Real TimeClock/Calendar/CPU Supervisor with EEPROM

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