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MCP7940价格

参考价格：￥5.2093

型号：MCP79400-I/MS 品牌：Microchip 备注：这里有MCP7940多少钱，2026年最近7天走势，今日出价，今日竞价，MCP7940批发/采购报价，MCP7940行情走势销售排行榜，MCP7940报价。

型号	功能描述	生产厂家企业	LOGO
MCP79402	Battery-Backed I2C Real-Time Clock/Calendar with Pre-Programmed EUI-64™ MAC ID The MCP79402 general purpose I2CTM Compatible real-time clock/calendar (RTCC) is highly integrated with memory and advanced features normally found in higher priced devices. These features include a battery switchover circuit for backup power, a timestamp to log power failures and digital trimming f VCC Min = 1.8V\nIcc VBAT Min = 1.3V\nIbat VCC to VBAT (power lost)\nVBAT to VCC (power restored)\nDual alarms with single Interrupt Output that operates on VCC or VBAT\nClock Out frequencies of 32.768, 8.192 & 4.096 KHz and 1 Hz\n1 ppm is approximately 86 milliseconds/day\nProtect none, 1/4, 1/2 or ;	MICROCHIP 微芯科技	MICROCHIP
MCP7940M	I2C Real-Time Clock/Calendar with SRAM The MCP7940M I2CTM compatible real-time clock/calendar (RTCC) includes SRAM and a digital trimming circuit for accuracy which is normally found in higher priced devices. Using a low-cost 32,768 kHz crystal or other clock source, time is tracked in either a 12-hour or 24-hour format with an AM/PM ind Hours, Minutes, Seconds, Day of Week, Day, Month, Year\nLeap year compensated to 2399\n12/24 hour modes\n1 PPM Resolution\n±129 PPM Range\nDual Programmable Alarms\nClock output with selectable frequency\nAlarm output\nGeneral Purpose output \n64 Bytes SRAM\nI2C Clock Frequency up to 400 kHz \nOper;	MICROCHIP 微芯科技	MICROCHIP
MCP7940N	Battery-Backed I2C Real-Time Clock/Calendar with SRAM The MCP7940N series of low-power Real-Time Clocks (RTC) uses digital timing compensation for an accurate clock/calendar, a programmable output control for versatility, and a power sense circuit that automatically switches to the backup supply. Using a low-cost 32.768kHz crystal, it tracks time using Battery-Backed Real-Time Clock/Calendar (RTCC)\nHours, Minutes, Seconds, Day of Week, Day, Month, Year\nLeap year compensated to 2399\n12/24 hour modes\nOn-Chip Digital Trimming/Calibration\n1 PPM Resolution\n±129 PPM Range\nDual Programmable Alarms\nVersatile Output Pin\nClock output with selectab;	MICROCHIP 微芯科技	MICROCHIP
MCP7940N	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940N_V01	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940N-E/MS	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940N-E/MSVAO	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940N-E/SNVAO	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940N-ESLASHMS	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940N-ESLASHMSVAO	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940N-ESLASHSNVAO	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940N-I/P	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940N-I/SN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940N-ISLASHP	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940N-ISLASHSN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-E/MS	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-E/MSVAO	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-E/SN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-E/SNVAO	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-ESLASHMS	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-ESLASHMSVAO	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-ESLASHSN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-ESLASHSNVAO	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-I/MNY	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-I/SN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-I/ST	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-ISLASHMNY	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-ISLASHSN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP7940NT-ISLASHST	Battery-Backed I2C Real-Time Clock/Calendar with SRAM General Description The MCP7940N Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, days, months, years, and day of week. Alarms can be configured on all counters up to and including months. For usage and configuration, the MCP7940N supports I2C	MICROCHIP 微芯科技	MICROCHIP
MCP79400	I2C??Real-Time Clock/Calendar with SRAM, Unique ID and Battery Switchover 文件：574.14 Kbytes Page：38 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79400	I2C Real-Time Clock/Calendar with SRAM, Unique IDand Battery Switchover 文件：1.17507 Mbytes Page：42 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79400	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79400	I2C Real-Time Clock/Calendar with SRAM, Unique ID and Battery Switchover 文件：1.17507 Mbytes Page：42 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79400_13	I2C Real-Time Clock/Calendar with SRAM, Unique IDand Battery Switchover 文件：1.17507 Mbytes Page：42 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79400_16	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79400-I/SN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79400-I/SN	封装/外壳：8-SOIC（0.154"，3.90mm 宽）包装：管件描述：IC RTC CLK/CALENDAR I2C 8-SOIC 集成电路（IC）实时时钟	MICROCHIP 微芯科技	MICROCHIP
MCP79400-I/ST	封装/外壳：8-TSSOP（0.173"，4.40mm 宽）包装：管件描述：IC RTC CLK/CALENDAR I2C 8-TSSOP 集成电路（IC）实时时钟	MICROCHIP 微芯科技	MICROCHIP
MCP79400-ISLASHSN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79400T-I	I2C Real-Time Clock/Calendar with SRAM, Unique ID and Battery Switchover 文件：1.17507 Mbytes Page：42 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79400T-I/MNY	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79400T-I/SN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79400T-ISLASHMNY	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79400T-ISLASHSN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79401	I2C Real-Time Clock/Calendar with SRAM, Unique IDand Battery Switchover 文件：1.17507 Mbytes Page：42 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79401	I2C??Real-Time Clock/Calendar with SRAM, Unique ID and Battery Switchover 文件：574.14 Kbytes Page：38 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79401	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79401	I2C Real-Time Clock/Calendar with SRAM, Unique ID and Battery Switchover 文件：1.17507 Mbytes Page：42 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79401-I/MS	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79401-I/SN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79401-ISLASHMS	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79401-ISLASHSN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79402	I2C Real-Time Clock/Calendar with SRAM, Unique IDand Battery Switchover 文件：1.17507 Mbytes Page：42 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79402	I2C Real-Time Clock/Calendar with SRAM, Unique ID and Battery Switchover 文件：1.17507 Mbytes Page：42 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79402	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79402	I2C??Real-Time Clock/Calendar with SRAM, Unique ID and Battery Switchover 文件：574.14 Kbytes Page：38 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79402-I/SN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79402-I/ST	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79402-ISLASHSN	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP
MCP79402-ISLASHST	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 文件：920.86 Kbytes Page：62 Pages	MICROCHIP 微芯科技	MICROCHIP

MCP7940产品属性

类型
描述
Vcc Range (V)：
1.8 - 5.5
Ibat Min (nA)：
700
EEPROM Data Memory Bytes：
0
Unique ID with MAC Addr：
Blank ID
Temperature Range (°C)：
-40 to +85
Alarm Settings：
2 Alarms (1 sec)
Vbat Range (V)：
1.3 - 5.5
User SRAM (Bytes)：
64
Interface：
I²C™
Digital Trimming：
-127 to +127ppm (1 ppm steps)
Packages：
8\\MSOP8\\SOIC8\\TDFN8\\TSSOP

MCP7940供应商更多...

更新时间：2026-5-24 16:30:00

IC供应商	芯片型号	品牌	批号	封装	库存	备注	价格
深圳市冠亿通科技有限公司	MCP7940N-E/MS	Microchip Technology	24+25+		16500	全新原厂原装现货!受权代理!可送样可提供技术支持!	询价
深圳市得捷芯城科技有限公司	MCP7940N-E/MS	MICROCHIP(美国微芯)	25+	MSOP8	1546	原装现货,免费供样,技术支持,原厂对接	询价
艾睿（深圳）半导体有限公司	MCP7940N-E/MS	MICROCHIP(美国微芯)	2447	MSOP-8	31500	100个/管一级代理专营品牌!原装正品,优势现货,长期	询价
深圳市创新迹电子有限公司	MCP7940N-E/MS	MICROCHIP/微芯	22+	MSOP3x3	20000	公司只做原装品质保障	询价
万三科技(深圳)有限公司	MCP7940N-E/MS	Microchip(微芯)	25+	MSOP-8	500000	源自原厂成本,高价回收工厂呆滞	询价
深圳市华睿芯科技有限公司	MCP7940N-E/MS	Microchip	24+	8MSOP	10000	全新原厂原装，进口正品现货，正规渠道可含税！！	询价
深圳市盈慧通电子有限公司	MCP7940N-E/MS	Microchip(微芯)	2511	MSOP-8	9550	电子元器件采购降本30%!原厂直采,砍掉中间差价	询价
贸泽芯城（深圳）电子科技有限公司	MCP7940N-E/MS	MICROCHIP/微芯	23+	MSOP8	10002	一级代理原厂VIP渠道,专注军工、汽车、医疗、工业、	询价
深圳市芯为科技有限公司	MCP7940N-E/MS	Microchip	25+	电联咨询	7800	公司现货,提供拆样技术支持	询价
深圳市正纳电子有限公司	MCP7940N-E/MS	Microchip(微芯)	23+	NA	20094	正纳10年以上分销经验原装进口正品做服务做口碑有支持	询价

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