AT25DF641A datasheet(46/57 Pages) ATMEL

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8693A–DFLASH–8/10

Atmel AT25DF641A [Preliminary]

Figure 13-1. Atmel RapidS Operation

14. Electrical Specifications

SCK

MOSI

MISO

234567

MOSI = Master Out, Slave In

MISO = Master In, Slave Out

The Master is the ASIC/MCU and the Slave is the memory device.

The Master always clocks data out on the rising edge of SCK and always clocks data in on the falling edge of SCK.

The Slave always clocks data out on the falling edge of SCK and always clocks data in on the rising edge of SCK.

Master clocks out first bit of BYTE A on the rising edge of SCK

Slave clocks in first bit of BYTE A on the next rising edge of SCK

Master clocks out second bit of BYTE A on the same rising edge of SCK

Last bit of BYTE A is clocked out from the Master

Last bit of BYTE A is clocked into the slave

Slave clocks out first bit of BYTE B

Master clocks in first bit of BYTE B

Slave clocks out second bit of BYTE B

Master clocks in last bit of BYTE B

BYTE A

MSB

LSB

BYTE B

MSB

LSB

Slave

14.1

Absolute Maximum Ratings*

Temperature under Bias .................... -55

⋅C to +125⋅C

*NOTICE:

Stresses beyond those listed under “Absolute Maximum

Ratings” may cause permanent damage to the device.

Functional operation of the device at these or any other

conditions beyond those indicated in the operational sec-

tions of this specification is not implied. Exposure to abso-

lute maximum rating conditions for extended periods may

affect device reliability. Voltage extremes referenced in the

“Absolute Maximum Ratings” are intended to accomodate

short duration undershoot/overshoot conditions and does

not imply or guarantee functional device operation at

these levels for any extended period of time.

Storage Temperature........................ -65

°C to +150°C

All Input Voltages

(including NC Pins)

with Respect to Ground ....................... -0.6V to +4.1V

All Output Voltages

with Respect to Ground ............... -0.6V to V

CC + 0.5V

14.2

DC and AC Operating Range

Atmel AT25DF641A

Operating Temperature (Case)

Ind.

-40

°Cto85°C

CC Power Supply

2.7V to 3.6V

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