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LE25LB642CT Datasheet(PDF) 12 Page - Sanyo Semicon Device

Part No. LE25LB642CT
Description  Serial SPI EEPROM (SPI Bus)(64Kbit)
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LE25LB642CT Datasheet(HTML) 12 Page - Sanyo Semicon Device

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LE25LB642CT
7. Hardware Data Protection
In order to protect against unintentional writing at power-on, the LE25LB642CT incorporates a power-on reset
function.
8. Software Data Protection
This product eliminates the possibility of unintentional operations by not recognizing commands under the following
conditions.
• When a write command is input and the rising CS edge timing is not in a bus cycle (8CLK units of SCK).
• When the write data is not in 1-byte increments.
• When the status register write command is input for 2bus cycles or more.
No.NA1471-12/14
9. Power-on
In order to protect against unintentional writing, CS must be kept at VDD at power-on. After power-on, the supply
voltage has stabilized at 1.8V or higher, wait for 10
μs (tPU_READ) before inputting the command to start a read
operation. Similarly, wait for 10ms (tPU_WRITE) after the supply voltage has stabilized at 1.8V or higher before
inputting the command to start a write operation.
10. Decoupling Capacitor
A0.1
μF ceramic capacitor must be provided to each device and connected between VDD and VSS in order to ensure
that the device will operate stably.


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