MCP7940N-ESLASHST datasheet(1/42 Pages) MICROCHIP

tên linh kiện	MCP7940N-E/ST

Giải thích chi tiết về linh kiện	Low-Cost I2C Real-Time Clock/Calendar with SRAM and Battery Switchover

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 2011-2013 Microchip Technology Inc.

DS25010E-page 1

MCP7940N

Device Selection Table

Features:

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

Backed:

- 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

• 64 Bytes SRAM, Battery Backed

• Automatic VCC Switchover to VBAT Backup

Supply

• Power-Fail Time-Stamp for Battery Switchover

• Low-Power CMOS Technology:

- Dynamic Current: 400

A max read

- Battery Backup Current: <700nA @ 1.8V

• 100 kHz and 400 kHz Compatibility

• ESD Protection >4,000V

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

TDFN, MSOP

• Pb-Free and RoHS Compliant

• Temperature Ranges:

- Industrial (I): -40°C to +85°C

- Extended (E): -40°C to +125°C

Description:

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.

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.

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.

The RTC series of devices are available in the standard

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

Package Types

Part Number

SRAM

(Bytes)

MCP7940N

64

X1

X2

VBAT

VSS

VCC

MFP

SCL

SDA

1

2

3

4

8

7

6

5

MSOP

SOIC, TSSOP

X1

X2

VBAT

VSS

1

2

3

4

8

7

6

5

VCC

MFP

SCL

SDA

TDFN

X1

X2

VBAT

VSS

MFP

SCL

SDA

VCC

8

7

6

5

1

2

3

4

Low-Cost I2C™ Real-Time Clock/Calendar

with SRAM and Battery Switchover

Số phần tương tự - MCP7940N-E/ST

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Microchip Technology	MCP7940N-E/SNVAO	727Kb / 58P	Battery-Backed I2C Real-Time Clock/Calendar with SRAM 09/14/21

More results

Mô tả tương tự - MCP7940N-E/ST

nhà sản xuất	tên linh kiện	bảng dữ liệu	Giải thích chi tiết về linh kiện
Microchip Technology	MCP79410	580Kb / 38P	I2C??Real-Time Clock/Calendar with EEPROM, SRAM, Unique ID and Battery Switchover 2011
	MCP7940N	562Kb / 36P	Low-Cost I2C??Real-Time Clock/Calendar with SRAM and Battery Switchover 2011
	MCP79400	574Kb / 38P	I2C??Real-Time Clock/Calendar with SRAM, Unique ID and Battery Switchover 2011
Micro Analog systems	MCP7952X	946Kb / 50P	3V SPI Real-Time Clock Calendar with Battery Switchover
Microchip Technology	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
	MCP79400T-I	1Mb / 42P	I2C Real-Time Clock/Calendar with SRAM, Unique ID and Battery Switchover 11/29/11
	MCP7940N	727Kb / 58P	Battery-Backed I2C Real-Time Clock/Calendar with SRAM 09/14/21

More results

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