W25B40 Datasheet, PDF (31/36 Pages) Winbond – 4M-BIT SERIAL FLASH MEMORY WITH BOOT AND PARAMETER SECTORS

W25B40/W25B40A
9.7 AC Electrical Characteristics (Preliminary) cont’d
DESCRIPTION
SYMBOL ALT
/HOLD Active Hold Time relative to CLK
/HOLD Not Active Setup Time relative to CLK
/HOLD Not Active Hold Time relative to CLK
/HOLD to Output Low-Z
/HOLD to Output High-Z
Write Protect Setup Time Before /CS Low
Write Protect Hold Time After /CS High
/CS High to Power-down Mode
/CS High to Standby Mode without Electronic
Signature Read
/CS High to Standby Mode with Electronic
Signature Read
Write Status Register Cycle Time
Page Program Cycle Time
Sector Erase Cycle Time 64KB sectors
Sector Erase Cycle Time 32KB sectors
Sector Erase Cycle Time 16KB sectors
Sector Erase Cycle Time 8KB sectors
Sector Erase Cycle Time 4KB sectors
Chip Erase Cycle Time
tCHHH
tHHCH
tCHHL
tHHQX⁽²⁾
tLZ
tHLQZ⁽²⁾
tHZ
tWHSL⁽⁴⁾
tSHWL⁽⁴⁾
tDP⁽²⁾
tRES1⁽²⁾
tRES2⁽²⁾
tW
tPP
tSE
tCE
SPEC
MIN TYP MAX
5
5
5
9
9
20
100
3
3
1.8
10 15
2
5
0.65 2
0.37 1
0.23 0.7
0.15 0.45
0.12 0.35
5.5 10
UNIT
ns
ns
ns
ns
ns
ns
ns
µs
µs
µs
ms
ms
s
s
s
s
s
s
Notes:
1. Clock high + Clock low must be less than or equal to 1/fC.
2. Value guaranteed by design and/or characterization, not 100% tested in production.
3. Expressed as a slew-rate.
4. Only applicable as a constraint for a Write Status Register instruction when Sector Protect Bit is set at 1.
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Publication Release Date: January 6, 2006
Revision M