M28256 データシートの表示（PDF） - STMicroelectronics
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M28256 Datasheet PDF : 20 Pages
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Figure 12. Page Write Mode AC Waveforms (Write Enable, W, controlled)
A0-A14
Addr 0
Addr 1
Addr 2
Addr n
M28256
E
G
W
DQ0-DQ7
tWHWL
tWLWH
Byte 0
Byte 1
tWHWH
Byte 2
DQ5
Figure 13. Software Protected Write Cycle Waveforms
G
tWHRH
tWHWH
Byte n
Byte n
AI01703B
E
W
A0-A5
A6-A14
DQ0-DQ7
tAVEL
tWLWH
tWHWL
tWHWH
tWLAX
Byte Address
tWHDX
5555h
2AAAh
5555h
Page Address
tDVWH
AAh
55h
A0h
Byte 0
Byte 62
Byte 63
AI01704
Note: 1. A14 to A6 must specify the same page address during each high-to-low transition of W (or E). G must be high only when W and E
are both low.
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