Micron M25P40 Serial Flash Embedded Memory
AC Characteristics
Table 21: AC Specifications (25 MHz, Device Grade 3, VCC[min]=2.7V) (Continued)
Symbol
tSHSL
Alt.
Parameter
Min
100
–
Typ
–
Max
–
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
μs
Notes
tCSH S# deselect time
tSHQZ
tCLQV
tCLQX
tHLCH
tCHHH
tHHCH
tCHHL
tHHQX
tHLQZ
tWHSL
tSHWL
tDP
tDIS
tV
tHO
–
Output disable time
–
15
15
–
3
Clock LOW to output valid
–
–
Output hold time
0
–
HOLD# setup time (relative to C)
HOLD# hold time (relative to C)
HOLD# setup time (relative to C)
HOLD# hold time (relative to C)
HOLD# to output LOW-Z
10
10
10
10
–
–
–
–
–
–
–
–
–
–
–
–
tLZ
tHZ
–
–
15
20
–
3
3
5
5
3
3
3
HOLD# to output HIGH-Z
–
–
WRITE PROTECT setup time
20
100
–
–
–
WRITE PROTECT hold time
–
–
–
S# HIGH to DEEP POWER-DOWN mode
S# HIGH to STANDBY without electronic signature read
S# HIGH to STANDBY with electronic signature read
–
3
tRES1
–
–
–
30
30
μs
tRES2
–
–
–
μs
1. READ DATA BYTES at HIGHER SPEED, PAGE PROGRAM, SECTOR ERASE, BLOCK ERASE,
DEEP POWER-DOWN, READ ELECTRONIC SIGNATURE, WRITE ENABLE/DISABLE, READ ID,
READ/WRITE STATUS REGISTER
Notes:
2. The tCH and tCL signals must be greater than or equal to 1/fC.
3. The tCLCH, tCHCL, tSHQZ, tHHQX, tHLQZ, tDP, tRES1, and tRES2 signal values are guaranteed by
characterization, not 100% tested in production.
4. The tCLCH and tCHCLsignals clock rise and fall time values are expressed as a slew-rate.
5. The tWHSL and tSHWLsignals are only applicable as a constraint for a WRITE STATUS REGIS-
TER command when SRWD bit is set at 1.
Table 22: AC Specifications (50 MHz, Device Grade 6, VCC[min]=2.7V)
Symbol
fC
Alt.
fC
Parameter
Clock frequency for commands (See note)
Clock frequency for READ command
Min
D.C.
D.C.
9
Typ
–
Max
Unit
MHz
MHz
ns
Notes
50
25
–
1
fR
–
–
tCH
tCLH Clock HIGH time
tCLL Clock LOW time
–
2
tCL
9
–
–
ns
2
tCLCH
tCHCL
tSLCH
tCHSL
tDVCH
tCHDX
tCHSH
tSHCH
–
–
Clock rise time (peak to peak)
Clock fall time (peak to peak)
0.1
0.1
5
–
–
V/ns
V/ns
ns
3, 4
3, 4
–
–
tCSS S# active setup time (relative to C)
S# not active hold time (relative to C)
tDSU Data in setup time
–
–
—
5
–
–
ns
2
–
–
ns
tDH
–
Data in hold time
5
–
–
ns
S# active hold time (relative to C)
S# not active setup time (relative to C)
5
–
–
ns
–
5
–
–
ns
PDF: 09005aef8456654f
m25p40.pdf - Rev. Y 8/12 EN
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42
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