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MCP79520
  • MCP79520
  • MCP79520

MCP79520

In Production

The MCP79520 SPI RTCC is highly integrated with memory and advanced features normally found in higher priced devices. By starting with a basic real-time clock, digital trimming was added for higher accuracy, a battery switchover for backup power, a timestamp to log power failures and three types of memory, which includes SRAM, EEPROM and a blank unique ID in a locked section of EEPROM. The ID is blank in this device, but can also be ordered with a 48-bit or 64-bit MAC Address.

Microchip Technology MCP79520 Product Info

16 April 2026 2

Parameters

EEPROM Data Memory Bytes

2

Unique ID with MAC Address

Blank

User SRAM (Bytes)

64

Max Interface Speed

10 MHz

Minimum Clock Count

0.01 sec

Pin Count

10

Unique ID (Bits)

128

Temp Range Max (°C (degrees Celsius))

85

Temp Range Min (°C (degrees Celsius))

-40

Features

  • VCC Min = 1.8V
  • Icc < 5 µA (Typical Standby Current)
  • VBAT Min = 1.3V
  • Ibat < 700nA Typical Timekeeping & SRAM Retention Current
  • VCC to VBAT (VCC Lost)
  • VBAT to VCC (VCC Restored)
  • IRQ (VCC or VBAT)
  • Clock Out frequencies: 32.768, 8.192 & 4.096 KHz and 1 Hz
  • Adjusts up to 22 seconds/day
  • Protect: None, 1/4, 1/2 or all of array
  • Factory standard MAC address programming or custom ID available

Description

The MCP79520 SPI RTCC is highly integrated with memory and advanced features normally found in higher priced devices. By starting with a basic real-time clock, digital trimming was added for higher accuracy, a battery switchover for backup power, a timestamp to log power failures and three types of memory, which includes SRAM, EEPROM and a blank unique ID in a locked section of EEPROM. The ID is blank in this device, but can also be ordered with a 48-bit or 64-bit MAC Address.

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