M29W400 データシートの表示（PDF） - STMicroelectronics
部品番号
コンポーネント説明
メーカー
M29W400
STMicroelectronics
M29W400 Datasheet PDF : 34 Pages
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M29W400T, M29W400B
Table 15A. Write AC Characteristics, Write Enable Controlled
(TA = 0 to 70°C, –20 to 85°C or –40 to 85°C)
M29W400T / M29W400B
Symbol Alt
Parameter
-90
VCC = 3.0V to 3.6V
CL = 30pF
Min
Max
-100
VCC = 2.7V to 3.6V
CL = 30pF
Min
Max
tAVAV
tWC Address Valid to Next Address Valid
90
100
tELWL
tCS Chip Enable Low to Write Enable Low
0
0
tWLWH
tWP Write Enable Low to Write Enable High
45
50
tDVWH
tDS Input Valid to Write Enable High
45
50
tWHDX
tDH Write Enable High to Input Transition
0
0
tWHEH
tCH Write Enable High to Chip Enable High
0
0
tWHWL tWPH Write Enable High to Write Enable Low
30
30
tAVWL
tAS Address Valid to Write Enable Low
0
0
tWLAX
tAH Write Enable Low to Address Transition
45
50
tGHWL
Output Enable High to Write Enable Low
0
0
tVCHEL tVCS VCC High to Chip Enable Low
50
50
tWHGL
tOEH Write Enable High to Output Enable Low
0
0
tPHPHH (1,2) tVIDR RP Rise Time to VID
500
500
tPLPX
tRP RP Pulse Width
tWHRL (1) tBUSY Program Erase Valid to RB Delay
tPHWL (1) tRSP RP High to Write Enable Low
Notes: 1. Sample only, not 100% tested.
2. This timing is for Temporary Block Unprotection operation.
500
500
90
90
4
4
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
ns
ns
µs
Program (PG) Instruction. This instruction uses
four write cycles. Both for Byte-wide configuration
and for Word-wide configuration. The Program
command A0h is written to address AAAAh in the
Byte-wide configuration or to address 5555h in the
Word-wide configurationon the third cycle after two
Coded cycles. A fourth write operation latches the
Address on the falling edge of W or E and the Data
to be written on the rising edge and starts the
P/E.C. Read operations output the Status Register
bits after the programming has started. Memory
programming is made only by writing ’0’ in place of
’1’. Statusbits DQ6 and DQ7 determine if program-
ming is on-going and DQ5 allows verification of any
possible error. Programming at an address not in
blocks being erased is also possible during erase
suspend. In this case, DQ2 will toggle at the ad-
dress being programmed.
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