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Battery-Backed SPI Real-Time Clock/Calendar with Pre-Programmed EUI-64™ MAC ID
Overview
- EEPROM Data Memory Bytes:1
- Unique ID with MAC Address:EUI-64
- User SRAM (Bytes):64
- Max Interface Speed:10 MHz
- Minimum Clock Count:0.01 sec
- Pin Count:10
- Unique ID (Bits):128
- Temp Range Min (°C (degrees Celsius)):-40
- Temp Range Max (°C (degrees Celsius)):85
- General purpose SPI RTCC with features that target low power, security & communications applications. • Low Power Operation - VCC Min = 1.8V - Icc < 5 µA Typical Standby Current • Low Backup Power - VBAT Min = 1.3V - Ibat < 700nA Typical Timekeeping & SRAM Retention Current • Automatic Battery Switchover with Timestamp - VCC to VBAT (VCC Lost) - VBAT to VCC (VCC Restored) • Dual configurable alarms with a 0.01 sec count on one alarm - IRQ (VCC or VBAT) • Clock Out frequencies: 32.768, 8.192 & 4.096 KHz and 1 Hz • Digital Trimming Range from -255 to + 255 ppm in 1 ppm steps - Adjusts up to 22 seconds/day • EEPROM has 8 Bytes/Page with Block Sector write protection - Protect: None, 1/4, 1/2 or all of array • Factory standard MAC address programming or custom ID available
The MCP79512 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 unique ID in a locked section of EEPROM. This ID is preprogrammed with a 64-bit MAC Address, but it can also be ordered blank for the end user to program.
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Tools And Software
Development Environment
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 MPLAB® X Integrated Development Environment (IDE) is an expandable, highly configurable software program that incorporates powerful tools to help you discover, configure, develop, debug and qualify embedded designs for most of Microchip’s microcontrollers, microprocessors and digital signal controllers.
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["developmentenvironment","Development Environment"] ,
["emulators","Emulator and Debuggers"] ,
["demoevaluationboards","Demo & Evaluation Boards"] ,
["programmerrelations","Programmers"] ,
["thirdpartytools","3rd Party Tools"] ,
["legacy","Legacy"] ,
["softwarelibraries","Library and Firmware"]
referencedesigns,Reference Designs:
codeexamples,Code Examples:
ibisboarddesignfiles,Board Design Files:
