MSM54V12222A データシートの表示（PDF） - Oki Electric Industry

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MSM54V12222A

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Oki Electric Industry 

MSM54V12222A

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OKI Semiconductor

1. Input signal reference levels for the parameter measurement are VIH=3.0V and VIL=0V.

The transition time tT is defined to be a transition time that signal transfers between VIH=3.0V

and VIL=0V.

2. AC measurements assume tT=3ns.

3. Read address must have more than 600 address delay than write address in every cycle

when asynchronous read/write is performed.

4. Read must have more than 600 address delay than write in order to read the data written in a

current series of write cycle which has been started last write reset cycle : this is called "new

data read".

When read has less than 70 address delay than write, the read data are the data written in a

previous series of write cycle which had been written before last write reset cycle: this is called

"old data read".

5. When the read address delay is between more than 71 and less than 599, read data will be

undetermined. However, normal write is achieved in this address condition.

6. Outputs are measured with a load equivalent to 1 TTL load and 30pF.

Output reference levels are VOH=2.0V and VOL=0.8V.

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