Description
MCP7940N-I/SN Microchip Real-Time Clock/Calendar SRAM I2C SOIC8, TU Surface Mount
Specifications
Manufacturer: Microchip
Product Category: Real Time Clock
RoHS: Details
Mounting Style: SMD/SMT
Package / Case: SOIC-8
RTC Bus Interface: Serial, 2-Wire, I2C
Date Format: DW:DM:M:Y
Time Format: HH:MM:SS
Battery Backup Switching: Backup Switching
RTC Memory Size: 64 B
Supply Voltage – Max: 5.5 V
Supply Voltage – Min: 1.8 V
Minimum Operating Temperature: – 40 C
Maximum Operating Temperature: + 85 C
Packaging: Cut Tape
Packaging: Reel
Function: Alarm, Calendar, Clock
Product: Real Time Clocks
Brand: Microchip Technology
Moisture Sensitive: Yes
Product Type: Real Time Clock
Factory Pack Quantity: 3300
Subcategory: Clock & Timer ICs
Unit Weight: 0.019048 oz
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 2×3 TDFN packages.
Manufacturer Part Number: MCP7940N-I/SN
Manufacturer: Microchip Technology
