Datasheet > MCP79400T-I

MCP79400T-I

更新时间： 2024-11-21 12:04:07

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	1175K
描述
I2C Real-Time Clock/Calendar with SRAM, Unique ID and Battery Switchover

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中文翻译

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数据手册

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MCP79400T-I 数据手册

MCP79400/MCP79401/MCP79402

I²C™ Real-Time Clock/Calendar with SRAM, Unique ID

and Battery Switchover

Device Selection Table

Description:

SRAM

(Bytes)

The MCP7940X 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, and nonvolatile memory

for data storage. Using a low-cost 32.768 kHz crystal,

it tracks time using several internal registers. For

communication, the MCP7940X uses the I²C™ bus.

Part Number

Unique ID

MCP79400

MCP79401

MCP79402

Blank

EUI-48^™

EUI-64^™

Features:

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

Backed:

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.

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

Month and Year

- 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

Along with the battery-backed SRAM memory, a 64-bit

protected EEPROM space is available for a unique ID

or MAC address to be programmed at the factory or by

the end user.

• 64 Bytes SRAM, Battery Backed

• 64-Bit Unique ID:

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.

- User or factory programmable

- Protected EEPROM

- EUI-48^™or EUI-64^™MAC address

The RTC series of devices are available in the standard

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

- Custom ID programming

• Automatic VCC Switchover to VBAT Backup

Supply

Package Types

• Power-Fail Time-Stamp for Battery Switchover

• Low-Power CMOS Technology:

MSOP

VCC

- Dynamic Current: 400 A max read

- Dynamic Current: 400 A max SRAM

V_BAT

VSS

MFP

SCL

SDA

TDFN

- Battery Backup Current: <700nA @ 1.8V

• 100 kHz and 400 kHz Compatibility

• ESD Protection >4,000V

VCC

MFP

SCL

SDA

VBAT

SOIC, TSSOP

• 1 Million Erase/Write Cycles for Unique ID

VSS

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

TDFN, MSOP

VCC

V_BAT

VSS

MFP

SCL

SDA

• Pb-Free and RoHS Compliant

• Temperature Ranges:

- Industrial (I): -40°C to +85°C

 2011 Microchip Technology Inc.

DS25009C-page 1

12 3 4 5 6 7...42

中文翻译

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与MCP79400T-I相关器件

型号	品牌	获取价格	描述	数据表
MCP79400T-I/MNY	MICROCHIP	获取价格	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM
MCP79400T-I/SN	MICROCHIP	获取价格	REAL TIME CLOCK, PDSO8, 3.90 MM, ROHS COMPLIANT, PLASTIC, SOP-8
MCP79401	MICROCHIP	获取价格	I2C? Real-Time Clock/Calendar with SRAM, Unique ID and Battery Switchover
MCP79401-I/MS	MICROCHIP	获取价格	REAL TIME CLOCK, PDSO8, ROHS COMPLIANT, PLASTIC, MSOP-8
MCP79401-I/SN	MICROCHIP	获取价格	REAL TIME CLOCK, PDSO8, 3.90 MM, ROHS COMPLIANT, PLASTIC, SOP-8
MCP79401-I/ST	MICROCHIP	获取价格	REAL TIME CLOCK, PDSO8, 4.40 MM, ROHS COMPLIANT, PLASTIC, TSSOP-8
MCP79402	MICROCHIP	获取价格	I2C? Real-Time Clock/Calendar with SRAM, Unique ID and Battery Switchover
MCP79402-I/MS	MICROCHIP	获取价格	REAL TIME CLOCK, PDSO8, ROHS COMPLIANT, PLASTIC, MSOP-8
MCP79402-I/SN	MICROCHIP	获取价格	REAL TIME CLOCK, PDSO8, 3.90 MM, ROHS COMPLIANT, PLASTIC, SOP-8
MCP79402-I/ST	MICROCHIP	获取价格	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM

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