參數(shù)資料
型號(hào): 29F022T-90
廠商: Macronix International Co., Ltd.
英文描述: 2M-BIT[256K x 8]CMOS FLASH MEMORY
中文描述: 200萬(wàn)位[256K × 8]的CMOS閃存
文件頁(yè)數(shù): 35/46頁(yè)
文件大小: 606K
代理商: 29F022T-90
35
P/N:PM0556
REV. 1.3, NOV. 11, 2002
MX29F022/022NT/B
TIMING WAVEFORM FOR CHIP PROTECTION/UNPROTECTION FOR SYSTEM WITHOUT 12V
Note1: Don't care except F0H.
Note2: Protection:7th command cycle A6 goes low.
Unprotection: 7th command cycle A6 goes high.
Note3: Protection verify:01H
Un-protection verify:00H
Note4: Must issue "unlock for chip protection/unprotection" command before chip protection/un-protection for a
system without 12V provided.
6th command
cycle : 555H
7th command
cycle
A6,A9 & sector address are don't care
during toggle bit polling period, or just
be kept valid value in read window.
Protected Verify
Reset to Read Mode
'0'
'1'
'0'
(Note 2)
'0'
'1'
tACC
tOE
tCE
tAS tAH
tCEP
X=Don't care
X
X
X
X
X
X
X
X
X
A6,A9 and Sector Addr. should be latched on the falling e
dge of WE or CE , ehich occurs last, for WSM reference
Toggle Bit Polling
X(2)
20H
Dout
Dout
Dout
Dout
F0H
A1
A6
A9
OE
WE
CE
(Q0-Q7)
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