msm9894al Oki Semiconductor, msm9894al Datasheet - Page 5

• Manufacturer Part Number: msm9894al
• Description: 8m-bit Serial Voice Flash Memory
• Manufacturer: Oki Semiconductor

¡ Semiconductor
WRITE DISTURB
"Write Distrub" means a phenomenon that the change from digital "0" to "1" may occur in a Flash
memory page to which data is scarcely written.
The above change can be avoided by refreshing Flash memory data with the DTRW command
and WEND command of the MSM9888L/MSM9889L.
q DTRW command
This command moves some Flash memory
page data to buffer.
TIMING WHEN POWER IS ON
Refer to the MSM9888L/MSM9889L Data Sheet. If the timing diagrams descrided in the
MSM9888L/MSM9889L Data Sheet are not satisfied, errors such as "Recording is disabled" or
"Recorded message is erased" may occur.
Buffer
Flash
Page "n"
w WEND command
This command programs buffer data to
Flash memory.
Buffer
Flash
MSM9894AL
Page "n"
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