DC and AC parameters
M95640-W M95640-R M95640-DF
Table 20. AC characteristics (M95640-R, device grade 6)
Test conditions specified in Table 10 and Table 12
Previous
New products(2)
products(1)
Symbol Alt.
Parameter
Unit
VCC ≥ 1.8V
VCC ≥ 1.8V VCC ≥ 2.5V VCC ≥ 4.5V
Min. Max. Min. Max. Min. Max. Min. Max.
fC
fSCK Clock frequency
2
5
10
20 MHz
tSLCH tCSS1 S active setup time
150
150
200
150
150
200
200
60
60
90
60
60
80
80
30
30
40
30
30
40
40
15
15
20
15
15
20
20
ns
ns
ns
ns
ns
ns
ns
tSHCH tCSS2 S not active setup time
tSHSL
tCHSH tCSH S active hold time
tCS S deselect time
tCHSL
S not active hold time
tCLH Clock high time
(3)
tCH
(3)
tCL
tCLL Clock low time
tRC Clock rise time
tFC Clock fall time
(4)
tCLCH
2
2
2
2
2
2
2
2
µs
µs
ns
ns
(4)
tCHCL
tDVCH tDSU Data in setup time
tCHDX tDH Data in hold time
Clock low hold time after HOLD
50
50
20
20
10
10
5
10
tHHCH
150
150
0
60
60
0
30
30
0
15
15
0
ns
ns
ns
ns
not active
Clock low hold time after HOLD
active
tHLCH
tCLHL
tCLHH
Clock low setup time before
HOLD active
Clock low setup time before
HOLD not active
0
0
0
0
(4)
tSHQZ
tCLQV
tCLQX
tDIS Output disable time
tV Clock low to output valid
tHO Output hold time
200
200
80
80
40
40
20
20
ns
ns
ns
ns
ns
ns
ns
ms
0
0
0
0
(4)
tQLQH
tRO Output rise time
200
200
200
200
5
80
80
80
80
5
20
20
40
40
5
10
10
20
20
5
(4)
tQHQL
tFO Output fall time
tHHQV
tLZ HOLD high to output valid
tHZ HOLD low to output High-Z
tWC Write time
(4)
tHLQZ
tW
1. For devices identified by process letter P.
2. For devices identified by process letter K.
3. tCH + tCL must never be less than the shortest possible clock period, 1 / fC(max).
4. Characterized only, not tested in production.
38/47
Doc ID 16877 Rev 16
STMICROELECTRONICS [ ST ]
