M29W400 ST Microelectronics, M29W400 Datasheet - Page 25

• Manufacturer Part Number: M29W400
• Description: 4 Mbit 512Kb x8 or 256Kb x16 / Boot Block Low Voltage Single Supply Flash Memory
• Manufacturer: ST Microelectronics

Figure 11. Data Polling Flowchart
Table 18. Program, Erase Times and Program, Erase Endurance Cycles
(T
Chip Erase (Preprogrammed)
Chip Erase
Boot Block Erase
Parameter Block Erase
Main Block (32Kb) Erase
Main Block (64Kb) Erase
Chip Program (Byte)
Byte Program
Word Program
Program/Erase Cycles (per Block)
A
= 0 to 70 C; V
at VALID ADDRESS
NO
READ DQ5 & DQ7
CC
READ DQ7
Parameter
START
DATA
DATA
DQ7
DQ5
DQ7
FAIL
= 2.7V to 3.6V)
= 1
=
=
YES
NO
NO
YES
YES
PASS
AI01369
100,000
Min
Figure 12. Data Toggle Flowchart
M29W400T / M29W400B
Typ
1.5
6.7
0.7
0.6
0.9
1.4
7.5
10
16
NO
DQ2, DQ5 & DQ6
READ DQ2, DQ6
DQ2, DQ6
DQ2, DQ6
TOGGLE
TOGGLE
START
READ
FAIL
DQ5
= 1
M29W400T, M29W400B
=
=
100k W/E Cycles
YES
YES
YES
Typical after
NO
1.7
7.0
7.5
10
16
NO
PASS
AI01873
cycles
Unit
sec
sec
sec
sec
sec
sec
sec
s
s
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