Datasheet > MCP79402-I/SN

MCP79402-I/SN

更新时间： 2024-11-21 19:50:31

品牌	Logo	应用领域
美国微芯 - MICROCHIP		时钟光电二极管外围集成电路
页数	文件大小	规格书
62页	860K
描述
REAL TIME CLOCK, PDSO8, 3.90 MM, ROHS COMPLIANT, PLASTIC, SOP-8

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技术参数
数据手册
替代型号

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MCP79402-I/SN 技术参数

是否Rohs认证：	符合	生命周期：	Active
零件包装代码：	SOIC	包装说明：	SOP, SOP8,.25
针数：	8	Reach Compliance Code：	compliant
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
风险等级：	0.85	最大时钟频率：	0.4 MHz
外部数据总线宽度：		信息访问方法：	I2C
中断能力：	Y	JESD-30 代码：	R-PDSO-G8
JESD-609代码：	e3	长度：	4.9 mm
湿度敏感等级：	3	端子数量：	8
计时器数量：	1	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260	电源：	2/5 V
认证状态：	Not Qualified	筛选级别：	TS 16949
座面最大高度：	1.75 mm	子类别：	Timer or RTC
最大供电电压：	5.5 V	最小供电电压：	1.8 V
标称供电电压：	2.5 V	表面贴装：	YES
技术：	CMOS	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn) - annealed	端子形式：	GULL WING
端子节距：	1.27 mm	端子位置：	DUAL
最短时间：	SECONDS	处于峰值回流温度下的最长时间：	40
易失性：	NO	宽度：	3.9 mm
uPs/uCs/外围集成电路类型：	TIMER, REAL TIME CLOCK	Base Number Matches：	1

MCP79402-I/SN 数据手册

MCP79400/MCP79401/MCP79402

Battery-Backed I²C Real-Time Clock/Calendar with

SRAM and Protected EEPROM

Device Selection Table

Operating Ranges

• 2-Wire Serial Interface, I²C Compatible:

- I²C clock rate up to 400 kHz

• Temperature Range:

Part Number

MCP79400

Protected EEPROM

Unprogrammed

EUI-48^™

MCP79401

MCP79402

- Industrial (I): -40°C to +85°C

EUI-64^™

Packages

Timekeeping Features

• 8-Lead SOIC, MSOP, TSSOP and 2x3 TDFN

General Description

• Real-Time Clock/Calendar (RTCC):

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

Month, Year

The MCP7940X 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

MCP7940X supports I²C communications up to

400 kHz.

- Leap year compensated to 2399

- 12/24-hour modes

• Oscillator for 32.768 kHz Crystals:

- Optimized for 6-9 pF crystals

• On-Chip Digital Trimming/Calibration:

- ±1 ppm resolution

The open-drain, multi-functional output can be

configured to assert on an alarm match, to output a

selectable frequency square wave or as a general

purpose output.

- ±129 ppm

• Dual Programmable Alarms

• Versatile Output Pin:

The MCP7940X is designed to operate using a

32.768 kHz tuning fork crystal with external crystal

load capacitors. On-chip digital trimming can be used

to adjust for frequency variance caused by crystal

tolerance and temperature.

- Clock output with selectable frequency

- Alarm output

- General purpose output

• Power-Fail Time-Stamp:

- Time logged on switchover to and from

Battery mode

SRAM and timekeeping circuitry are powered from the

back-up supply when main power is lost, allowing the

device to maintain accurate time and the SRAM

contents. The times when the device switches over to

the back-up supply and when primary power returns

are both logged by the power-fail time-stamp.

Low-Power Features

• Wide Voltage Range:

- Operating voltage range of 1.8V to 5.5V

- Backup voltage range of 1.3V to 5.5V

• Low Typical Timekeeping Current:

- Operating from VCC: 1.2 µA at 3.3V

The MCP7940X features 64 bits of EEPROM which is

only writable after an unlock sequence, making it ideal

for storing a unique ID or other critical information. The

MCP79401 and MCP79402 are pre-programmed with

EUI-48 and EUI-64 addresses, respectively. Custom

programming is also available.

- Operating from battery backup: 925 nA at

3.0V

Package Types

• Automatic Switchover to Battery Backup

User Memory

SOIC, TSSOP, MSOP

TDFN

• 64-Byte Battery-Backed SRAM

• 64-Bit Protected EEPROM Area:

- Robust write unlock sequence

- EUI-48^™MAC address (MCP79401)

- EUI-64^™MAC address (MCP79402)

- Custom programming available

VCC

MFP

SCL

X1 1

X2 2

VCC

MFP

SCL

SDA

VBAT

VSS

BAT

VSS

SDA

 2011-2016 Microchip Technology Inc.

DS20005009F-page 1

12 3 4 5 6 7...62

中文翻译

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MCP79402-I/SN 替代型号

型号	品牌	替代类型	描述	数据表
MCP79401-I/ST	MICROCHIP	完全替代	REAL TIME CLOCK, PDSO8, 4.40 MM, ROHS COMPLIANT, PLASTIC, TSSOP-8

与MCP79402-I/SN相关器件

型号	品牌	获取价格	描述	数据表
MCP79402-I/ST	MICROCHIP	获取价格	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM
MCP79402T-I/MNY	MICROCHIP	获取价格	REAL TIME CLOCK, PDSO8, 2 X 3 MM, 0.75 MM WIDTH, ROHS COMPLIANT, PLASTIC, TDFN-8
MCP79402T-I/ST	MICROCHIP	获取价格	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM
MCP7940M	MICROCHIP	获取价格	Low-Cost I2Câ¢ Real-Time Clock/Calendar with
MCP7940M-I	MICROCHIP	获取价格	Low-Cost I2Câ¢ Real-Time Clock/Calendar with
MCP7940M-I/SN	MICROCHIP	获取价格	REAL TIME CLOCK
MCP7940MIMNY	MICROCHIP	获取价格	Low-Cost I2Câ¢ Real-Time Clock/Calendar with
MCP7940MIMS	MICROCHIP	获取价格	Low-Cost I2Câ¢ Real-Time Clock/Calendar with
MCP7940MIP	MICROCHIP	获取价格	Low-Cost I2Câ¢ Real-Time Clock/Calendar with
MCP7940MISN	MICROCHIP	获取价格	Low-Cost I2Câ¢ Real-Time Clock/Calendar with

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