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MCP79521 - Battery-Backed SPI Real-Time Clock/Calendar

Download the MCP79521 datasheet PDF. This datasheet also covers the MCP79510 variant, as both devices belong to the same battery-backed spi real-time clock/calendar family and are provided as variant models within a single manufacturer datasheet.

Description

The MCP795XX Real-Time Clock/Calendar (RTCC) tracks time using internal counters for hours, minutes, seconds, hundredths of a second, days, months, years and day of week.

Alarms can be configured on all counters up to and including months.

Features

  • Real-Time Clock/Calendar (RTCC): - Hours, minutes, seconds, hundredths of a second, day of week, date, month, year - Leap year compensated to 2399 - 12/24-hour modes.
  • Oscillator for 32.768 kHz Crystals: - Optimized for 6-9 pF crystals.
  • On-Chip Digital Trimming/Calibration: - ±1 ppm resolution - ±259 ppm range.
  • Dual Programmable Alarms.
  • Clock Output Function with Selectable Frequency.
  • Power-Fail Timestamp: - Time logged on switchover to and f.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MCP79510-MICROCHIP.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number MCP79521
Manufacturer Microchip
File Size 816.60 KB
Description Battery-Backed SPI Real-Time Clock/Calendar
Datasheet download datasheet MCP79521 Datasheet

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Other Datasheets by Microchip

Part Number Description
MCP79520 Battery-Backed SPI Real-Time Clock/Calendar
MCP79522 Battery-Backed SPI Real-Time Clock/Calendar
MCP79510 Battery-Backed SPI Real-Time Clock/Calendar
MCP79511 Battery-Backed SPI Real-Time Clock/Calendar
MCP79512 Battery-Backed SPI Real-Time Clock/Calendar

Full PDF Text Transcription

Click to expand full text
MCP7951X/MCP7952X Battery-Backed SPI Real-Time Clock/Calendar Device Selection Table Part Number MCP79510 MCP79520 MCP79511 MCP79521 MCP79512 MCP79522 SRAM (Bytes) 64 64 64 64 64 64 Timekeeping Features • Real-Time Clock/Calendar (RTCC): - Hours, minutes, seconds, hundredths of a second, day of week, date, month, year - Leap year compensated to 2399 - 12/24-hour modes • Oscillator for 32.768 kHz Crystals: - Optimized for 6-9 pF crystals • On-Chip Digital Trimming/Calibration: - ±1 ppm resolution - ±259 ppm range • Dual Programmable Alarms • Clock Output Function with Selectable Frequency • Power-Fail Timestamp: - Time logged on switchover to and from Battery mode Low-Power Features • Wide Voltage Range: - Operating voltage range of 1.8V to 3.6V - Backup voltage range of 1.3V to 3.
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