Microchip Technology MCP7940N-E/SN, Real Time Clock (RTC) Serial-I2C, 8-Pin SOIC

  • RS Stock No. 177-0837
  • Mfr. Part No. MCP7940N-E/SN
  • Manufacturer Microchip
Product overview and Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): US
Product Details

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, and 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.

Battery Backup
64 Bytes Battery-Backed SRAM
2-Wire Serial Interface, I2C™Compatible
I2C Clock Frequency up to 400 kHz
Low-Power
Wide Voltage Range
Operating Voltage 1.8V to 5.5V
Backup Voltage 1.3V to 5.5V
Low Typical Timekeeping Current
Automatic Switchover to Battery Backup

Specifications
Attribute Value
Time Format HH:MM:SS
Bus Type Serial-I2C
Mounting Type Surface Mount
Package Type SOIC
Pin Count 8
Dimensions 4.9 x 3.9 x 1.5mm
Length 4.9mm
Width 3.9mm
Height 1.5mm
Maximum Operating Supply Voltage 5.5 V
Maximum Operating Temperature +125 °C
Minimum Operating Supply Voltage 1.8 V
Minimum Operating Temperature -40 °C
260 In stock for delivery within 3 working days
Price Each (In a Pack of 10)
HK$ 6.99
(exc. GST)
units
Per unit
Per Pack*
10 - 40
HK$6.99
HK$69.90
50 +
HK$6.452
HK$64.52
*price indicative
Packaging Options:
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