W25Q20BW
9.7 AC Electrical Characteristics (
cont’d)
SPEC
DESCRIPTION
SYMBOL
ALT
MIN
TYP
MAX
UNIT
/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
/CS High to next Instruction after Suspend
Write Status Register Time
Byte Program Time (First Byte)
(4)
Additional Byte Program Time (After First Byte)
(4)
Page Program Time
Sector Erase Time (4KB)
Block Erase Time (32KB)
Block Erase Time (64KB)
Chip Erase Time
Notes:
1.
2.
3.
4.
5.
t
CHHH
t
HHCH
t
CHHL
t
HHQX
(2)
t
HLQZ
(2)
t
WHSL
(3)
t
SHWL
(3)
t
DP
(2)
t
RES
1
(2)
t
RES
2
(2)
t
SUS
(2)
t
W
t
BP1
t
BP2
t
PP
t
SE
t
BE
1
t
BE
2
t
CE
t
LZ
t
HZ
5
5
5
7
12
20
100
3
30
30
20
10
20
2.5
0.4
30
120
150
1
15
50
10
0.8
200/400
(5)
800
1,000
4
ns
ns
ns
ns
ns
ns
ns
µs
µs
µs
µs
ms
µs
µs
ms
ms
ms
ms
s
Clock high + Clock low must be less than or equal to 1/f
C
.
Value guaranteed by design and/or characterization, not 100% tested in production.
Only applicable as a constraint for a Write Status Register instruction when SRP0 bit is set to 1.
For multiple bytes after first byte within a page,
t
BPN
=
t
BP1 +
t
BP2 * N
(typical) and
t
BPN
=
t
BP1 +
t
BP2 * N
(max), where N =
number of bytes programmed.
Max Value t
SE
with <50K cycles is 200ms and >50K & <100K cycles is 400ms.
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