R80C188XL-25 查看數據表（PDF） - Intel
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R80C188XL-25 Datasheet PDF : 48 Pages
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80C186XL 80C188XL
AC SPECIFICATIONS (Continued)
CLOCK TIMINGS
TA e 0 C to a70 C VCC e 5V g10%
All timings are measured at 1 5V and 50 pF loading on CLKOUT unless otherwise noted
All output test conditions are with CL e 50 pF
For AC tests input VIL e 0 45V and VIH e 2 4V except at X1 where VIH e VCC b 0 5V
Values
Symbol Parameter
80C186XL25
80C186XL20
80C186XL12 Unit
Min
Max
Min
Max
Min
Max
Test
Conditions
80C186XL CLKIN REQUIREMENTS(1)
TCKIN CLKIN Period
20
%
25
%
40
% ns
TCLCK CLKIN Low Time
8
%
10
%
16
% ns 1 5V(2)
TCHCK CLKIN High Time
8
%
10
%
16
% ns 1 5V(2)
TCKHL CLKIN Fall Time
5
5
5 ns 3 5 to 1 0V
TCKLH CLKIN Rise Time
5
5
5 ns 1 0 to 3 5V
80C186XL CLKOUT TIMING
TCICO CLKIN to
CLKOUT Skew
17
17
21 ns
TCLCL
TCLCH
CLKOUT Period
40
%
50
CLKOUT
Low Time
0 5 TCLCL b 5
0 5 TCLCL b 5
80
% ns
0 5 TCLCL b 5
ns CL e 100 pF(3)
TCHCL CLKOUT
High Time
0 5 TCLCL b 5
0 5 TCLCL b 5
0 5 TCLCL b 5
ns CL e 100 pF(4)
TCH1CH2 CLKOUT
Rise Time
6
8
10 ns 1 0 to 3 5V
TCL2CL1 CLKOUT
Fall Time
6
8
10 ns 3 5 to 1 0V
NOTES
1 External clock applied to X1 and X2 not connected
2 TCLCK and TCHCK (CLKIN Low and High times) should not have a duration less than 40% of TCKIN
3 Tested under worst case conditions VCC e 5 5V TA e 70 C
4 Tested under worst case conditions VCC e 4 5V TA e 0 C
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