MCP79411-I/SN datasheet, PDF - EEWORLD Datasheet

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MCP79411-I/SN: DescriptionDate format: YY-MM-DD-dd Time format: HH:MM:SS (12/24 hr) Interface type: I2C, 2-Wire Serial Memory capacity: 64B, 1Kb Clock chip type: Clock/Calendar; CategoryThe embedded processor and controller Microcontrollers and processors; File Size980KB，66 Pages; ManufacturerMicrochip; Websitehttps://www.microchip.com; Environmental Compliance

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MCP79411-I/SN Overview

Date format: YY-MM-DD-dd Time format: HH:MM:SS (12/24 hr) Interface type: I2C, 2-Wire Serial Memory capacity: 64B, 1Kb Clock chip type: Clock/Calendar

MCP79411-I/SN Parametric

Parameter Name	Attribute value
Is it Rohs certified?	conform to
Parts packaging code	SOIC
package instruction	SOP, SOP8,.25
Contacts	8
Reach Compliance Code	compliant
ECCN code	EAR99
Factory Lead Time	11 weeks
Other features	ALSO OPERATES AT 100KHZ WITH 1.8 V NOMINAL
maximum clock frequency	0.4 MHz
External data bus width
Information access methods	I2C
interrupt capability	Y
JESD-30 code	R-PDSO-G8
JESD-609 code	e3
length	4.9 mm
Humidity sensitivity level	3
Number of terminals	8
Maximum operating temperature	85 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SOP
Encapsulate equivalent code	SOP8,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE
Peak Reflow Temperature (Celsius)	260
power supply	2/5 V
Certification status	Not Qualified
Maximum seat height	1.75 mm
Maximum supply voltage	5.5 V
Minimum supply voltage	2.5 V
Nominal supply voltage	5 V
surface mount	YES
technology	CMOS
Temperature level	INDUSTRIAL
Terminal surface	Matte Tin (Sn) - annealed
Terminal form	GULL WING
Terminal pitch	1.27 mm
Terminal location	DUAL
shortest time	SECONDS
Maximum time at peak reflow temperature	40
Volatile	NO
width	3.9 mm
uPs/uCs/peripheral integrated circuit type	TIMER, REAL TIME CLOCK
Base Number Matches	1

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MCP79410/MCP79411/MCP79412

Battery-Backed I

C Real-Time Clock/Calendar with

SRAM, EEPROM and Protected EEPROM

Device Selection Table

Part Number

MCP79410

MCP79411

MCP79412

Protected EEPROM

Unprogrammed

EUI-48

™

EUI-64

™

Operating Ranges

• 2-Wire Serial Interface, I

C Compatible:

- I

C clock rate up to 400 kHz

• Temperature Range:

- Industrial (I): -40°C to +85°C

Packages

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

Timekeeping Features

• Real-Time Clock/Calendar (RTCC):

- Hours, minutes, seconds, day of week, day,

month, year

- 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

- ±129 ppm range

• Dual Programmable Alarms

• Versatile Output Pin:

- Clock output with selectable frequency

- Alarm output

- General purpose output

• Power-Fail Time-Stamp:

- Time logged on switchover to and from Battery

mode

General Description

The MCP7941X 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 MCP7941X

supports I

C communications up to 400 kHz.

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.

The MCP7941X 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.

SRAM and timekeeping circuitry are powered from the

backup 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.

The MCP7941X features 1 Kbit of internal nonvolatile

EEPROM with software write-protectable regions.

There is an additional 64 bits of protected nonvolatile

memory which is only writable after an unlock sequence,

making it ideal for storing a unique ID or other critical

information. The MCP79411 and MCP79412 are

pre-programmed with EUI-48 and EUI-64 addresses,

respectively. Custom programming is also available.

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 V

: 1.2 µA at 3.3V

- Operating from V

BAT

: 925 nA at 3.0V

• Automatic Switchover to Battery Backup

User Memory

• 64-Byte Battery-Backed SRAM

• 1 Kbit EEPROM Memory:

- Software write-protect

- Page write up to eight bytes

- Endurance: 1M Erase/Write cycles

• 64-Bit Protected EEPROM Area:

- Robust write unlock sequence

- EUI-48

™

MAC address (MCP79411)

- EUI-64

™

MAC address (MCP79412)

Package Types

SOIC, TSSOP, MSOP

TDFN

BAT

MFP

SCL

SDA

X1 1

X2 2

BAT

MFP

SCL

SDA



2010-2016 Microchip Technology Inc.

DS20002266H-page 1

MCP79411-I/SN Related Products

	MCP79411-I/SN	MCP79412-I/SN	MCP79412-I/ST	MCP79411-I/MS
Description	Date format: YY-MM-DD-dd Time format: HH:MM:SS (12/24 hr) Interface type: I2C, 2-Wire Serial Memory capacity: 64B, 1Kb Clock chip type: Clock/Calendar	Date format: YY-MM-DD-dd Time format: HH:MM:SS (12/24 hr) Interface type: I2C, 2-Wire Serial Memory capacity: 64B, 1Kb Clock chip type: Clock/Calendar with EEPROM, I2C real-time clock/calendar with SRAM, unique ID and battery switching	Date format: YY-MM-DD-dd Time format: HH:MM:SS (12/24 hr) Interface type: I2C, 2-Wire Serial Memory capacity: 64B, 1Kb Clock chip type: Clock/Calendar	Date format: YY-MM-DD-dd Time format: HH:MM:SS (12/24 hr) Interface type: I2C, 2-Wire Serial Memory capacity: 64B, 1Kb Clock chip type: Clock/Calendar
Is it Rohs certified?	conform to	conform to	conform to	conform to
Parts packaging code	SOIC	SOIC	SOIC	MSOP
package instruction	SOP, SOP8,.25	SOIC-8	TSSOP, TSSOP8,.25	TSSOP, TSSOP8,.19
Contacts	8	8	8	8
Reach Compliance Code	compliant	compliant	compliant	compliant
ECCN code	EAR99	EAR99	EAR99	EAR99
Factory Lead Time	11 weeks	16 weeks	15 weeks	8 weeks
Other features	ALSO OPERATES AT 100KHZ WITH 1.8 V NOMINAL	ALSO OPERATES AT 100KHZ WITH 1.8 V NOMINAL	ALSO OPERATES AT 100KHZ WITH 1.8 V NOMINAL	ALSO OPERATES AT 100KHZ WITH 1.8 V NOMINAL
maximum clock frequency	0.4 MHz	0.4 MHz	0.4 MHz	0.4 MHz
Information access methods	I2C	I2C	I2C	I2C
interrupt capability	Y	Y	Y	Y
JESD-30 code	R-PDSO-G8	R-PDSO-G8	R-PDSO-G8	S-PDSO-G8
JESD-609 code	e3	e3	e3	e3
length	4.9 mm	4.9 mm	4.4 mm	3 mm
Humidity sensitivity level	3	3	1	1
Number of terminals	8	8	8	8
Maximum operating temperature	85 °C	85 °C	85 °C	85 °C
Minimum operating temperature	-40 °C	-40 °C	-40 °C	-40 °C
Package body material	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY	PLASTIC/EPOXY
encapsulated code	SOP	SOP	TSSOP	TSSOP
Encapsulate equivalent code	SOP8,.25	SOP8,.25	TSSOP8,.25	TSSOP8,.19
Package shape	RECTANGULAR	RECTANGULAR	RECTANGULAR	SQUARE
Package form	SMALL OUTLINE	SMALL OUTLINE	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	260	260	260	260
power supply	2/5 V	2/5 V	2/5 V	2/5 V
Certification status	Not Qualified	Not Qualified	Not Qualified	Not Qualified
Maximum seat height	1.75 mm	1.75 mm	1.2 mm	1.1 mm
Maximum supply voltage	5.5 V	5.5 V	5.5 V	5.5 V
Minimum supply voltage	2.5 V	2.5 V	2.5 V	2.5 V
Nominal supply voltage	5 V	5 V	5 V	5 V
surface mount	YES	YES	YES	YES
technology	CMOS	CMOS	CMOS	CMOS
Temperature level	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL
Terminal surface	Matte Tin (Sn) - annealed	Matte Tin (Sn) - annealed	Matte Tin (Sn) - annealed	Matte Tin (Sn) - annealed
Terminal form	GULL WING	GULL WING	GULL WING	GULL WING
Terminal pitch	1.27 mm	1.27 mm	0.65 mm	0.65 mm
Terminal location	DUAL	DUAL	DUAL	DUAL
shortest time	SECONDS	SECONDS	SECONDS	SECONDS
Maximum time at peak reflow temperature	40	40	40	40
Volatile	NO	NO	NO	NO
width	3.9 mm	3.9 mm	3 mm	3 mm
uPs/uCs/peripheral integrated circuit type	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK	TIMER, REAL TIME CLOCK
Maker	-	Microchip	Microchip	Microchip

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