MCP7940N-ESLASHMS datasheet(1/58 Pages) MICROCHIP

номер детали	MCP7940N-E/MS

подробное описание детали	Battery-Backed I2C Real-Time Clock/Calendar with SRAM

PDF	58 Pages

Scroll/Zoom	100%

производитель	MICROCHIP [Microchip Technology]

домашняя страница	http://www.microchip.com

Logo

1 / 58 page

 2011-2022 Microchip Technology Inc. and its subsidiares

DS20005010J-page 1

MCP7940N

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

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

- Operating from battery backup: 925 nA at

3.0V

• Automatic Switchover to Battery Backup

User Memory

• 64-byte Battery-Backed SRAM

Operating Ranges

• Two-Wire Serial Interface, I2C Compatible

-I2C clock rate up to 400 kHz

• Temperature Range:

- Industrial (I): -40°C to +85°C

- Extended (E): -40°C to +125°C

• Automotive AEC-Q100 Qualified

Packages

• 8-Lead MSOP, 8-Lead PDIP, 8-Lead SOIC,

8-Lead 2x3 TDFN and 8-Lead TSSOP

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 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 MCP7940N 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

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.

Package Types

MSOP, PDIP , SOIC, TSSOP

X1

X2

VBAT

VSS

1

2

3

4

8

7

6

5

VCC

MFP

SCL

SDA

TDFN

X1

X2

VSS

MFP

SDA

VCC

8

7

5

1

2

4

VBAT 3SCL

6

Note 1: Available in I-temp only.

(1)

Battery-Backed I2C Real-Time Clock/Calendar with SRAM

Аналогичный номер детали - MCP7940N-E/MS

производитель	номер детали	датащи	подробное описание детали
Microchip Technology	MCP7940N-E/MS	1Mb / 42P	Low-Cost I2C Real-Time Clock/Calendar with SRAM and Battery Switchover 11/29/12

More results

Аналогичное описание - MCP7940N-E/MS

производитель	номер детали	датащи	подробное описание детали
Microchip Technology	MCP7940N	562Kb / 36P	Low-Cost I2C??Real-Time Clock/Calendar with SRAM and Battery Switchover 2011
	MCP79410	1Mb / 60P	Battery-Backed I2C??Real-Time Clock/Calendar with EEPROM and Unique ID 11/29/12 2010-2013
	MCP7940N	1Mb / 42P	Low-Cost I2C??Real-Time Clock/Calendar with SRAM and Battery Switchover 11/29/12
	MCP7940M	1,006Kb / 38P	Low-Cost I2C??Real-Time Clock/Calendar with SRAM 11/29/11
	MCP79400	1Mb / 42P	I2C Real-Time Clock/Calendar with SRAM, Unique IDand Battery Switchover 11/29/11
	MCP7940M-I	1,006Kb / 38P	Low-Cost I2C??Real-Time Clock/Calendar with SRAM 11/29/11
	MCP79400	920Kb / 62P	Battery-Backed I2C Real-Time Clock/Calendar with SRAM and Protected EEPROM 06/23/16
Renesas Technology Corp	ISL1208	1,010Kb / 24P	I2C Real Time Clock/Calendar, Low Power RTC with Battery Backed SRAM
Microchip Technology	MCP7951X	899Kb / 58P	Battery-Backed SPI Real-Time Clock/Calendar 09/14/21
Renesas Technology Corp	ISL1208	1Mb / 25P	I2C Real Time Clock/Calendar, Low Power RTC with Battery Backed SRAM Jul 15, 2022

More results

MCP7940N-E/MS датащи(PDF) 1 Page - Microchip Technology

MCP7940N-E/MS датащи(HTML) 1 Page - Microchip Technology

Аналогичный номер детали - MCP7940N-E/MS

Аналогичное описание - MCP7940N-E/MS

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58

датащи скачать

ссылки URL