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| HYE18P32161AC Datasheet, PDF (14/33 Pages) Infineon Technologies AG – 32M Asynchronous/Page CellularRAM | |||
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HYE18P32161AC(-/L)70/85
32M Asynch/Page CellularRAM
Functional Description
2
Functional Description
2.1
Power-Up and Initialization
The power-up and initialization sequence guarantees that the device is preconditioned to the userâs specific
needs. Like conventional DRAMs, the CellularRAM must be powered up and initialized in a predefined manner.
VDD and VDDQ must be applied at the same time to the specified voltage while the input signals are held in
âDESELECTâ state (CS1 = High).
After power on, an initial pause of 150 µs is required prior to the control register access or normal operation. Failure
to follow these steps may lead to unpredictable start-up modes.
VDD, VDDQ
VDD,VDDQ,min
Figure 4 Power Up Sequence
tPU=150µs
ready for normal
operation
Data Sheet
14
V2.0, 2003-12-16
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