MCHPMCP79410T-I/MS
Overview
The MCP79410 is a highly integrated Real-Time Clock and Calendar (RTCC) featuring a digital timing compensation circuit and a power-fail timestamp. It includes 64 bytes of battery-backed SRAM, 128 bytes of EEPROM, and a unique 64-bit ID, making it a comprehensive solution for timekeeping and non-volatile data storage. The device operates over a wide voltage range of 1.8V to 5.5V with an extremely low operating current of 1.2 microamps at 3.3V.
Why Choose This Part
This RTCC offers significant BOM integration by combining a clock, 1kbit of EEPROM, and SRAM into a single 8-pin package. Its digital trimming feature allows for high accuracy by compensating for crystal frequency drift across temperature and aging. The automatic battery switchover circuitry ensures continuous timekeeping without external diode-ORing logic.
Applications
Key Specifications
Getting Started
To evaluate this IC, engineers often use the MCP79410 RTCC PICtail Plus Daughter Board. Interface with the device via standard I2C at speeds up to 400kHz, ensuring the VBAT pin is connected to a 3V coin cell or supercapacitor for backup functionality. Microchip provides the MCC (Mouser Code Configurator) tool to generate peripheral initialization code for PIC microcontrollers.
MCP7941 Family
Comparing specs that differ across variants. The current part is highlighted.
| Part Number | Package | Stock |
|---|---|---|
| MCP79410T-I/MS (this part) | TSSOP-8 | 9,289 |
| MCP79410T-I/SN | SOIC-8 | 30,740 |
| MCP79411-I/MS | TSSOP-8 | 5,683 |
