ꢊꢐꢗꢀ##"$%&ꢞ"(ꢊ
&
Key to switching waveforms
ꢒꢅꢓꢅꢁꢏꢉꢅꢁꢐꢑꢈ
ꢍꢋꢎꢎꢅꢁꢏꢉꢅꢁꢐꢑꢈ
ꢀꢁꢂꢃꢄꢅꢁꢃꢂꢆꢂꢇꢁRꢊꢋꢌꢃ
Timing waveform of read/ write cycle
ꢌꢇ:
ꢌꢇHꢇ
ꢌꢇꢈ
ꢇꢈꢉ
ꢌꢇꢘꢜ%
ꢌꢇꢘꢜ:
ꢇꢘꢜ
ꢇꢘꢙ
ꢌꢇ%:
ꢌꢇ%%
ꢇꢘꢗꢓꢐꢇꢘꢖ
ꢌꢀꢅ-:
ꢌꢀꢅ-%
ꢀꢅ-(ꢈꢅ
ꢌ)%
ꢌ):
&()
ꢌ)%
ꢌ):
*)ꢞ
ꢌꢀ%
ꢌꢀ:
ꢀ2
ꢀ3
ꢀ4
ꢀ5
ꢀꢁ
ꢀꢙ
ꢀꢖ
ꢀꢅꢅ&ꢘ%%
ꢌ:/ꢇ
ꢌꢅ%
ꢌꢇꢅ
ꢌꢍꢘ
ꢌꢈ/ꢇ
ꢌꢅ:
ꢀꢁꢂꢅꢄ
ꢆꢁꢂꢇꢄ
ꢀꢁꢂꢃꢄ
ꢀꢁꢂꢈꢄ
ꢆꢁꢂꢉꢄ
ꢆꢁꢂꢊꢄ
ꢀꢁꢂꢃꢟꢄꢅꢀ
ꢀꢁꢂꢃꢟꢄꢅꢆ
ꢅ(ꢆ
ꢏꢋꢏꢃ ꢋꢞꢃ
ꢌꢍ:
ꢌ:/ꢍꢘ
ꢌꢈ/ꢍꢘ
ꢍꢘ
ꢀꢁꢂꢃꢟꢄꢅꢆ
ꢀꢁꢂꢅꢄ
ꢆꢁꢂꢇꢄ
ꢆꢁꢂꢋꢄ
ꢅ(ꢆ
ꢀꢁꢂꢃꢄ
ꢀꢁꢂꢈꢄ
ꢆꢁꢂꢉꢄ
ꢆꢁꢂꢊꢄ
ꢀꢁꢂꢃꢟꢄꢅꢆ
? ꢝFꢌ=ꢂꢝꢎꢊ=
*8&%,
&ꢘꢀꢅ
&ꢘꢀꢅ
ꢆBꢀ2C
ꢅ%ꢘꢈ
)&1,ꢘ
ꢅBꢀꢖC
*8&%,
)&1,ꢘ
)&1,ꢘ
ꢅBꢀ4C
&ꢘꢀꢅ
ꢆBꢀ5C
)&1,ꢘ
ꢅBꢀ6C
&ꢘꢀꢅ
ꢆBꢀ3C
WRITE
D(A1)
ꢇꢝ77ꢒꢞꢁ
ꢆBꢀ3ꢟꢗꢙC
ꢅBꢀꢖꢟꢗꢙC
ꢜꢝꢌꢃꢛꢐꢟꢐ@ꢐ;ꢍ&ꢐF=ꢃꢞꢐꢈ*ꢍꢐ@ꢐ:1<:(ꢜꢝꢐꢇꢝꢞꢞꢃ!ꢌGꢐꢟꢐ@ꢐꢀꢅꢅꢐF=ꢃꢞꢐꢈ*ꢍꢐ@ꢐꢈꢍ).ꢐꢐꢐ*)ꢑꢒꢛꢔꢕꢐꢋꢄꢐꢁꢝꢞRꢌꢐ!ꢒꢂꢃ.
ꢉꢗꢘꢙꢙꢘꢚꢙꢛꢉꢖꢔꢚꢔꢜꢔꢗꢊꢒꢖꢌꢍꢎꢏꢝꢍ ꢁ
ꢀꢋꢋꢌꢍꢎꢏꢐꢑꢁꢐꢒꢌꢏꢓꢎꢔꢕꢏꢖꢓꢗ
!ꢔꢉ"*ꢉꢁ ꢉ"ꢜ
ISSI [ INTEGRATED SILICON SOLUTION, INC ]
