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M41T93_07 PDF预览

M41T93_07

更新时间: 2024-11-12 02:55:11
品牌 Logo 应用领域
意法半导体 - STMICROELECTRONICS 电池
页数 文件大小 规格书
51页 383K
描述
Serial SPI bus RTC with battery switchover

M41T93_07 数据手册

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M41T93  
Serial SPI bus RTC with battery switchover  
Features  
Ultra-low battery supply current of 365nA  
Factory calibrated accuracy 5PPM  
guaranteed after 2 reflows (SOX18)  
– Much better accuracies achievable using  
built-in programmable analog and digital  
calibration circuits  
QFN16, 4mm x 4mm (QA)  
2.0V to 5.5V clock operating voltage  
18  
Counters for tenths/hundredths of seconds,  
seconds, minutes, hours, day, date, month,  
year, and century  
1
SOX18 (MY, 18-pin, 300mil SOIC  
with embedded crystal)  
Automatic switch-over and reset output  
circuitry (fixed reference)  
– M41T93S: V = 3.0V to 5.5V  
CC  
(2.85V V  
3.00V)  
RST  
– M41T93R: V = 2.7V to 5.5V  
CC  
(2.55V V  
– M41T93Z: V = 2.38V to 5.50V  
2.70V)  
RST  
Package options include:  
CC  
– a 16-lead QFN or an 18-lead embedded  
crystal SOIC  
(2.25V V  
2.38V)  
RST  
Compatible with SPI bus serial interface  
RoHS compliance: lead-free components are  
(positive clock SPI modes)  
compliant with the RoHS directive  
Programmable alarm with interrupt function  
(valid even during battery back-up mode)  
nd  
Optional 2 programmable alarm available  
Square wave output (defaults to 32kHz on  
power-up)  
RESET (RST) output  
Watchdog timer  
Programmable 8-bit counter/timer  
7 bytes of battery-backed user SRAM  
Battery low flag  
Power-down time stamp (HT bit)  
Low operating current of 80µA  
Oscillator stop detection  
Battery or Super-cap™ back-up  
Operating temperature of –40°C to +85°C  
October 2007  
Rev 3  
1/51  
www.st.com  
51  

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