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MCP79411 Datasheet(PDF) 23 Page - Microchip Technology

Part # MCP79411
Description  Battery-Backed I2C??Real-Time Clock/Calendar with EEPROM and Unique ID
PDF  60 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP79411 Datasheet(HTML) 23 Page - Microchip Technology

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 2010-2013 Microchip Technology Inc.
DS20002266E-page 23
MCP79410/MCP79411/MCP79412
FIGURE 8-3:
ID UNLOCK FLOWCHART
8.2.1
UNLOCK SEQUENCE
The I2C bus sequence to unlock the unique ID
locations is show in Figure 8-4. This example shows
all eight locations being written, any location may be
written individually.
Write 0x55 to
SRAM 0x09
Stop
Write 0xAA to
SRAM 0x09
Stop
All Data Written
Finish
ID Locked
Start
ID Locked
Write Data
to Unique
ID Location
YES
NO



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