MCP795B10 MAS [Micro Analog systems], MCP795B10 Datasheet - Page 10
MCP795B10
Manufacturer Part Number
MCP795B10
Description
SPI Real-Time Clock Calendar
Manufacturer
MAS [Micro Analog systems]
Datasheet
1.MCP795B10.pdf
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MCP795WXX/MCP795BXX
3.3
The MCP795XXX contains a write enable latch.
This latch must be set before any EEWRITE,
SRWRITE and IDWRITE operation will be completed
internally. The EEWREN instruction will set the latch, and
the EEWRDI will reset the latch.
FIGURE 3-4:
FIGURE 3-5:
DS22280A-page 10
Write Enable (EEWREN) and Write
Disable (EEWRDI)
WRITE ENABLE SEQUENCE (EEWREN)
WRITE DISABLE SEQUENCE (EEWRDI)
SCK
CS
SO
SCK
SI
CS
SO
SI
0
0
0
0
0
1
0
1
Preliminary
High-Impedance
0
High-Impedance
0
2
2
0
0
3
3
The following is a list of conditions under which the
write enable latch will be reset:
• Power-up
• EEWRDI instruction successfully executed
• SRWRITE instruction successfully executed
• EEWRITE instruction successfully executed
• IDWRITE instruction successfully executed
0
0
4
4
1
5
1
5
1
6
0
6
0
7
0
7
2011 Microchip Technology Inc.
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