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M48T86PC1F Datasheet(PDF) 11 Page - STMicroelectronics

Part # M48T86PC1F
Description  5.0 V PC real-time clock
PDF  36 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

M48T86PC1F Datasheet(HTML) 11 Page - STMicroelectronics

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M48T86
Operation
11/36
R/W (READ/WRITE input).
The R/W pin is used to latch data into the M48T86 and provides functionality similar to W in
other memory systems.
Non-volatile RAM
The 114 general-purpose non-volatile RAM bytes are not dedicated to any special function
within the M48T86. They can be used by the processor program as non-volatile memory
and are fully accessible during the update cycle.
Figure 5.
Intel bus READ AC waveform
Figure 6.
Intel bus WRITE mode AC waveform
AI01647
tCYC
tASD
tASW
AS
E
AD0-AD7
tDSL
tDSH
tDAS
tCS
tOD
tCH
tAS
tAH
tDHR
DS
R/W
AI01648
tCYC
tASD
tASW
AS
E
AD0-AD7
tDSL
tDSH
tDAS
tCS
tDW
tCH
tAS
tAH
tDHW
DS
R/W



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