MCP79400-I/SN More Semiconductors - ICs by Microchip Technology

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

Status: Active
Series: MCP79400
RoHS: Compliant
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The MCP79400 general purpose I2CTM Compatible real-time clock/calendar (RTCC) is highly integrated with memory and advanced features normally found in higher priced devices. These features include a battery switchover circuit for backup power, a timestamp to log power failures and digital trimming for accuracy. Using a low-cost 32,768 kHz crystal or other clock source, time is tracked in either a 12-hour or 24-hour format with an AM/PM indicator and timing to the second, minute, hour, day of the week, day, month and year. As an interrupt or wakeup signal, a multifunction open drain output can be programmed as an Alarm Out or as a Clock Out that supports 4 selectable frequencies. In addition to the SRAM memory, there a unique ID in a locked section of EEPROM that can be unlocked and programmed by the end user.

Prices starting from US$0.77


Distributor Starting From Stock
Logo for Newark Electronics Newark Electronics US$0.86
2,416
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Logo for Farnell Farnell US$0.87
2,416
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Logo for element14 element14 US$0.88
2,406
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Logo for Microchip Technology Microchip Technology US$0.77
1,550
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Logo for Distrelec Distrelec US$1.28
76
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Logo for Future Electronics Future Electronics US$0.86
-
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Logo for Avnet America Avnet America US$0.95
-
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Logo for RS Americas RS Americas US$1.43
-
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Features

VCC Min = 1.8V
Icc < 5 µA Typical Dynamic Current
VBAT Min = 1.3V
Ibat < 700nA Typical Timekeeping & SRAM Retention Current
VCC to VBAT (power lost)
VBAT to VCC (power restored)
Dual alarms with single Interrupt Output that operates on VCC or VBAT
Clock Out frequencies of 32.768, 8.192 & 4.096 KHz and 1 Hz
1 ppm is approximately 86 milliseconds/day
Factory standard or custom ID programming available

Specifications

Max Interface Speed 400 KHz
Pin Count 8
Minimum Clock_Count 1 sec
User SRAM (Bytes) 64
EEPROM Data Memory Bytes 0
Unique_ID (Bits) 64
Unique ID with MAC Addr Blank ID
Temperature Range -40 to +85
Pins | Packaging 8 | SOIC
Temp Range -40C to +85C
Packing Media Tube (100)

Resources








Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.078
Shipping Weight (kg) 0.25
Lead Count 8
Package Type SOIC
Package Width or Size .150In(3.90mm)
Soldering Composition Matte Tin

Alternative Descriptions

I2C Real-Time Clock/Calendar SRAM SOIC8 | RS
Rtcc, Gp I2C, 64B Sram, Id, 8Soic | Newark Electronics
RTCC, GP I2C, 64B SRAM, ID, 8SOIC | Farnell
I2C GP RTCC, 64B SRAM, ID | Microchip Technology
Microchip Real Time Clock Module, YY-MM-DD, I²C, SMD | Distrelec
Real Time Clock Serial 64Byte 8-Pin SOIC N Tube | Avnet America
I2C GP RTCC, 64B SRAM, ID8 SOIC 3.90mm(.150in) TUBE | Microchip Technology Inc. MCP79400-I/SN | RS Americas


Frequently Asked Questions

Where can I find additional details, specifications and documents for a MCP79400-I/SN?

Additional datasheets, footprints and schematics for MCP79400-I/SN are listed on our Part Details page. You can also find images and similar parts to MCP79400-I/SN on this page.

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What category does MCP79400-I/SN fall under?

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Is the MCP79400-I/SN RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

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