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11257-811 View Datasheet(PDF) - AMI Semiconductor

Part Name
Description
Manufacturer
11257-811
AMI
AMI Semiconductor AMI
11257-811 Datasheet PDF : 19 Pages
First Prev 11 12 13 14 15 16 17 18 19
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April 1999
Table 10: AC Timing Specifications
Unless otherwise stated, all power supplies = 3.3V ± 5%, no load on any output, and ambient temperature range TA = 0°C to 70°C. Parameters denoted with an asterisk ( * ) represent nominal
characterization data and are not currently production tested to any specific limits. MIN and MAX characterization data are ± 3σ from typical.
PARAMETER
SYMBOL
CONDITIONS/DESCRIPTION
CLOCK
(MHz)
MIN.
TYP. MAX. UNITS
Overall
Clock Skew, Maximum;
SDRAM_0 to any SDRAM pin *
tskw
Measured on the rising edge at 1.5V;
CL = 20pF
66.67
100
182
228
ps
tPLH(min)
Measured on the rising edge at 1.5V;
CL = 20pF
66.67
100
3.7
3.8
Propagation Delay, Average;
tPLH(max)
Measured on the rising edge at 1.5V;
CL = 30pF
66.67
100
3.7
4.0
CLK_IN to any SDRAM pin *
tPHL(min)
Measured on the rising edge at 1.5V;
CL = 20pF
66.67
100
3.9
3.8
ns
tPHL(max)
Measured on the rising edge at 1.5V;
CL = 30pF
66.67
100
4.2
4.0
Clock Outputs (SDRAM_0:17 3.3V Type 4 Clock Buffer)
Rise Time *
66.67
1.0
tr(min)
VO = 0.4V to 2.4V; CL = 20pF
100
0.9
ns
66.67
1.2
tr(max)
VO = 0.4V to 2.4V; CL = 30pF
100
1.0
Fall Time *
66.67
1.0
tf(min)
VO = 2.4V to 0.4V; CL = 20pF
100
0.7
ns
66.67
1.1
tf(max)
VO = 2.4V to 0.4V; CL = 30pF
100
0.8
Clock High Time *
tKH(min)
VO = 2.4V; CL = 20pF
tKH(max)
VO = 2.4V; CL = 30pF
66.67
6.5
100
3.8
ns
66.67
6.5
100
3.8
Clock Low Time *
tKL(min)
VO = 0.4V; CL = 20pF
tKL(max)
VO = 0.4V; CL = 30pF
66.67
6.5
100
4.6
ns
66.67
6.3
100
4.5
Duty Cycle *
From rising edge to rising edge at
66.67
49
1.5V; CL = 20pF
100
45
%
From rising edge to rising edge at
66.67
50
1.5V; CL = 30pF
100
46
Tristate Enable Delay *
Tristate Disable Delay *
tPZL
Output tristated to output active; CL = 20pF
tPZH
tPLZ
Output active to output tristated; CL = 20pF
tPHZ
4.7
ns
4.6
6.3
ns
7.9
4.5.99
,62
11
 

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