Micron M25P40 Serial Flash Embedded Memory
AC Characteristics
Table 19: Instruction Times, Process Technology 110nm
Symbol
t
W
t
PP
t
PP
t
SE
t
BE
Parameter
WRITE STATUS REGISTER cycle time
PAGE PROGRAM cycle time (256 bytes)
PAGE PROGRAM cycle time (n bytes)
SECTOR ERASE cycle time
BULK ERASE cycle time
Notes:
Min
–
–
–
–
–
Typ
1.3
0.8
int (n/8) x
0.025
0.6
4.5
3
10
s
s
Max
15
5
Units
ms
ms
Notes
1. Applies to the entire table: 110nm technology devices are identified by the process iden-
tification digit
4
in the device marking and the process letter
B
in the part number.
2. When using the PAGE PROGRAM command to program consecutive bytes, optimized
timings are obtained in one sequence that includes all the bytes rather than in several
sequences of only a few bytes (1 < n < 256).
Table 20: Instruction Times, Process Technology 150nm
Symbol
t
W
t
PP
t
PP
t
SE
t
BE
Parameter
WRITE STATUS REGISTER cycle time
PAGE PROGRAM cycle time (256 bytes)
PAGE PROGRAM cycle time (n bytes)
SECTOR ERASE cycle time
BULK ERASE cycle time
Notes:
Min
–
–
–
–
–
Typ
5
1.4
0.4+n*1/256
1.0
4.5
3
10
s
s
Max
15
5
Units
ms
ms
Notes
1. Applies to the entire table: 150nm technology devices are identified by the process iden-
tification digit
4
in the device marking and the process letter
B
in the part number.
2. When using the PAGE PROGRAM command to program consecutive bytes, optimized
timings are obtained in one sequence that includes all the bytes rather than in several
sequences of only a few bytes (1 < n < 256).
Table 21: AC Specifications (25 MHz, Device Grade 3, V
CC
[min]=2.7V)
Symbol
f
C
f
R
t
CH
t
CL
t
CLCH
t
CHCL
t
SLCH
t
CHSL
t
DVCH
t
CHDX
t
CHSH
t
SHCH
Alt.
f
C
–
t
CLH
t
CLL
–
–
t
CSS
—
t
DSU
t
DH
–
–
Parameter
Clock frequency for commands (See note)
Clock frequency for READ command
Clock HIGH time
Clock LOW time
Clock rise time (peak to peak)
Clock fall time (peak to peak)
S# active setup time (relative to C)
S# not active hold time (relative to C)
Data in setup time
Data in hold time
S# active hold time (relative to C)
S# not active setup time (relative to C)
Min
D.C.
D.C.
18
18
0.1
0.1
10
10
5
5
10
10
Typ
–
–
–
–
–
–
–
–
–
–
–
–
Max
25
20
–
–
–
–
–
–
–
–
–
–
Unit
MHz
MHz
ns
ns
V/ns
V/ns
ns
ns
ns
ns
ns
ns
Notes
PDF: 09005aef8456654f
m25p40.pdf - Rev. Y 8/12 EN
41
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