m48t86 STMicroelectronics, m48t86 Datasheet - Page 11

• Manufacturer Part Number: m48t86
• Description: 5v Pc Real Time Clock
• Manufacturer: STMicroelectronics

R/W (read/write input)
Non-volatile RAM
Figure 5.
Figure 6.
AS
DS
R/W
E
AD0-AD7
AS
DS
R/W
E
AD0-AD7
The R/W pin is used to latch data into the M48T86 and provides functionality similar to W in
other memory systems.
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.
Intel bus read AC waveform
Intel bus write mode AC waveform
tDAS
tDAS
tASW
tASW
tDSL
tDSL
tAS
tAS
tCS
tCS
tCYC
tCYC
tASD
tAH
tASD
tAH
tOD
tDW
tDSH
tDSH
tCH
tCH
tDHR
AI01647
tDHW
AI01648
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