AT25640BN-SH-B 查看數據表（PDF） - Atmel Corporation
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AT25640BN-SH-B Datasheet PDF : 23 Pages
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AT25320B/640B
Table 0-4. AC Characteristics
Applicable over recommended operating range from TAI = –40°C to +85°C, VCC = As Specified,
CL = 1 TTL Gate and 30 pF (unless otherwise noted)
Symbol
Parameter
Voltage
Min
Max
fSCK
SCK Clock Frequency
4.5–5.5
0
20
2.7–5.5
0
10
1.8–5.5
0
5
4.5–5.5
2
tRI
Input Rise Time
2.7–5.5
2
1.8–5.5
2
4.5–5.5
2
tFI
Input Fall Time
2.7–5.5
2
1.8–5.5
2
tWH
SCK High Time
4.5–5.5
20
2.7–5.5
40
1.8–5.5
80
tWL
SCK Low Time
4.5–5.5
20
2.7–5.5
40
1.8–5.5
80
tCS
CS High Time
4.5–5.5
25
2.7–5.5
50
1.8–5.5
100
tCSS
CS Setup Time
4.5–5.5
25
2.7–5.5
50
1.8–5.5
100
tCSH
CS Hold Time
4.5–5.5
25
2.7–5.5
50
1.8–5.5
100
tSU
Data In Setup Time
4.5–5.5
5
2.7–5.5
10
1.8–5.5
20
tH
Data In Hold Time
4.5–5.5
5
2.7–5.5
10
1.8–5.5
20
tHD
HOLD Setup Time
4.5–5.5
5
2.7–5.5
10
1.8–5.5
20
tCD
HOLD Hold Time
4.5–5.5
5
2.7–5.5
10
1.8–5.5
20
tV
Output Valid
4.5–5.5
0
20
2.7–5.5
0
40
1.8–5.5
0
80
tHO
Output Hold Time
4.5–5.5
0
2.7–5.5
0
1.8–5.5
0
Units
MHz
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
5
8535B–SEEPR–7/08
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