Datasheet > 微控制器和处理器 > 计时器或实时时钟> MCP7940NT-I-MNY

MCP7940NT-I-MNY

更新时间： 2024-11-25 12:01:55

品牌	Logo	应用领域
美国微芯 - MICROCHIP		电池静态存储器时钟
页数	文件大小	规格书
42页	1246K
描述
Low-Cost I2C Real-Time Clock/Calendar with SRAM and Battery Switchover

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

MCP7940NT-I-MNY 数据手册

MCP7940N

Low-Cost I²C™ Real-Time Clock/Calendar

with SRAM and Battery Switchover

Device Selection Table

Description:

SRAM

(Bytes)

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, a power sense circuit that automatically

switches to the backup supply. Using a low-cost 32.768

kHz crystal, it tracks time using several internal

registers. For communication, the MCP7940N uses the

I²C™ bus.

Part Number

MCP7940N

Features:

• Real-Time Clock/Calendar (RTCC), Battery

Backed:

- Hours, Minutes, Seconds, Day of Week, Day,

Month and Year

The clock/calendar automatically adjusts for months

with fewer than 31 days, including corrections for

leap years. The clock operates in either the 24-hour

or 12-hour format with an AM/PM indicator and

settable alarm(s) to the second, minute, hour, day of

the week, date or month. Using the programmable

CLKOUT, frequencies of 32.768, 8.192 and 4.096

kHz and 1 Hz can be generated from the external

crystal.

- Dual alarm with single output

• On-Chip Digital Trimming/Calibration:

- Range -127 to +127 ppm

- Resolution 1 ppm

• Programmable Open-Drain Output Control:

- CLKOUT with 4 selectable frequencies

- Alarm output

The device is fully accessible through the serial

interface while VCC is between 1.8V and 5.5V, but can

operate down to 1.3V for timekeeping and SRAM

retention only.

• 64 Bytes SRAM, Battery Backed

• Automatic VCC Switchover to VBAT Backup

Supply

• Power-Fail Time-Stamp for Battery Switchover

• Low-Power CMOS Technology:

The RTC series of devices are available in the standard

8-lead SOIC, TSSOP, MSOP and 2x3 TDFN packages.

- Dynamic Current: 400 A max read

- Battery Backup Current: <700nA @ 1.8V

• 100 kHz and 400 kHz Compatibility

• ESD Protection >4,000V

Package Types

MSOP

VCC

• Packages include 8-Lead SOIC, TSSOP, 2x3

TDFN, MSOP

V_BAT

VSS

MFP

SCL

SDA

TDFN

• Pb-Free and RoHS Compliant

• Temperature Ranges:

VCC

MFP

SCL

SDA

- Industrial (I): -40°C to +85°C

- Extended (E): -40°C to +125°C

VBAT

SOIC, TSSOP

VSS

VCC

V_BAT

VSS

MFP

SCL

SDA

 2011-2013 Microchip Technology Inc.

DS25010E-page 1

12 3 4 5 6 7...42

中文翻译

下载PDF

与MCP7940NT-I-MNY相关器件

型号	品牌	获取价格	描述	数据表
MCP79410	MICROCHIP	获取价格	I2C? Real-Time Clock/Calendar with EEPROM, SRAM, Unique ID and Battery Switchover
MCP79410_13	MICROCHIP	获取价格	Battery-Backed I2Câ¢ Real-Time Clock/Calenda
MCP79410-I/MS	MICROCHIP	获取价格	REAL TIME CLOCK, PDSO8, ROHS COMPLIANT, PLASTIC, MSOP-8
MCP79410-I/SN	MICROCHIP	获取价格	REAL TIME CLOCK, PDSO8, 3.90 MM, ROHS COMPLIANT, PLASTIC, SOIC-8
MCP79410-I/ST	MICROCHIP	获取价格	REAL TIME CLOCK, PDSO8, 4.40 MM BODY, ROHS COMPLAINT, PLASTIC, TSSOP-8
MCP79410T-I/MNY	MICROCHIP	获取价格	REAL TIME CLOCK, PDSO8, 2 X 3 MM, 0.75 MM HEIGHT, ROHS COMPLAINT, PLASTIC, TDFN-8
MCP79410T-I/MS	MICROCHIP	获取价格	REAL TIME CLOCK, PDSO8, ROHS COMPLAINT, PLASTIC, MSOP-8
MCP79410T-I/SN	MICROCHIP	获取价格	REAL TIME CLOCK, PDSO8, 3.90 MM, ROHS COMPLIANT, PLASTIC, SOIC-8
MCP79410T-I/ST	MICROCHIP	获取价格	IC RTC CLK/CALENDAR I2C 8-TSSOP
MCP79411	MICROCHIP	获取价格	I2C? Real-Time Clock/Calendar with EEPROM, SRAM, Unique ID and Battery Switchover

与MCP7940NT-I-MNY相关文章

解析光耦仿真器：升级光耦合器技术的必要性
2024-11-18

40
英伟达新一代Blackwell GPU过热问题致交付延迟
2024-11-18

32
国产厂商思特威CMOS图像传感器芯片单月出货超1亿颗，技术创新引领行业发展
2024-11-14

60
台积电5nm和3nm产能利用率达100%，半导体行业景气度持续攀升
2024-11-14

56

产品中心

服务支持

精选活动

关于我们

帮助中心

MCP7940NT-I-MNY

MCP7940NT-I-MNY 数据手册

与MCP7940NT-I-MNY相关器件

与MCP7940NT-I-MNY相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

MCP7940NT-I-MNY

MCP7940NT-I-MNY 数据手册

与MCP7940NT-I-MNY相关器件

与MCP7940NT-I-MNY相关文章

您还可以找

您在本页遇到什么问题？