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S25FL002D0FNAI013 Datasheet(PDF) 11 Page - SPANSION |
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S25FL002D0FNAI013 Datasheet(HTML) 11 Page - SPANSION |
11 / 38 page June 9, 2004 30167A+1 S25FL Family (Serial Peripheral Interface) 11 Pre limin ary I n f o r m a t ion To enter the Hold condition, the device must be selected, with Chip Select (CS#) Low. The Hold condition starts on the falling edge of the Hold (HOLD#) signal, provided that this coincides with Serial Clock (SCK) being Low (as shown in Figure 3). The Hold condition ends on the rising edge of the Hold (HOLD#) signal, provided that this coincides with Serial Clock (SCK) being Low. If the falling edge does not coincide with Serial Clock (SCK) being Low, the Hold condition starts after Serial Clock (SCK) next goes Low. Similarly, if the rising edge does not coincide with Serial Clock (SCK) being Low, the Hold condition ends after Serial Clock (SCK) next goes Low (Figure 3). During the Hold condition, the Serial Data Output (SO) is high impedance, and Serial Data Input (SI) and Serial Clock (SCK) are Don’t Care. Normally, the device remains selected, with Chip Select (CS#) driven Low, for the entire duration of the Hold condition. This ensures that the state of the internal logic remains unchanged from the moment of entering the Hold condition. Note: Driving Chip Select (CS#) high while HOLD# is still low is not a valid operation. Figure 3. Hold Condition Activation SCK HOLD# Hold Condition (standard use) Hold Condition (non-standard use) |
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