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MCP79510-I/MS Datasheet(PDF) 40 Page - Microchip Technology

Part # MCP79510-I/MS
Description  Battery-Backed SPI Real-Time Clock/Calendar
PDF  58 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP79510-I/MS Datasheet(HTML) 40 Page - Microchip Technology

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MCP7951X/MCP7952X
DS20002300D-page 40
 2012-2022 Microchip Technology Inc.and its subsidiaries
6.3
EEPROM
The MCP7952X features 2 Kbits of EEPROM and the
MCP7951X features 1 Kbit of EEPROM. It is organized
in 8-byte pages with software write protection
configurable through the STATUS register.
6.3.1
WRITE ENABLE AND WRITE
DISABLE
The MCP795XX contains a write enable latch. This
latch must be set before any write operation will be
completed internally. The EEWREN instruction will set
the latch and the EEWRDI instruction will reset the latch.
The following is a list of conditions under which the
write enable latch will be reset:
•Power-up
• WRDI instruction successfully executed
• EEWRITE instruction successfully executed
• SRWRITE instruction successfully executed
• IDWRITE instruction successfully executed
• Unlock sequence for protected EEPROM not
followed correctly
FIGURE 6-6:
WRITE ENABLE SEQUENCE
FIGURE 6-7:
WRITE DISABLE SEQUENCE
SCK
0
234567
1
SI
High-Impedance
SO
CS
01
0000
0
1
SCK
0
2
3
456
7
1
SI
High-Impedance
SO
CS
01
00
00
0
0



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