IA186XL/IA188XL
16-Bit Microcontrollers
Data Sheet
July 6, 2011
5.5
Clock Timings
TA = -40￮C to +85￮C, VCC = 5V + 10%
All timings are measured at 1.5V and 50 pF loading on CLKOUT unless otherwise noted.
All output test conditions are with CL = 50 pF.
For AC tests, input VIL = 0.45V and VIH = 2.4V except at X1 where VIH = VCC – 0.5V.
Table 17. Clock Timings
Values
Test
Conditions
Symbol
Parameter
Unit
Min
Max
∞
TCKIN
TCLCK
CLKIN Period
20
ns
ns
∞
CLKIN Low Time
8
8
1.5V(2)
∞
TCHCK
CLKIN High Time
ns
1.5V(2)
TCKHL
TCKLH
CLKIN Fall Time
CLKIN Rise Time
5
5
ns
ns
3.5 to 1.0V
1.0 to 3.5V
TCICO
TCLCL
TCLCH
CLKIN to CLKOUT Skew
CLKOUT Period
17
ns
ns
ns
40
∞
CLKOUT Low Time
0.5 TCLCL - 5
0.5 TCLCL - 5
CL = 100 pF(3)
CL = 100 pF(4)
1.0 to 3.5V
TCHCL
CLKOUT High Time
CLKOUT Rise Time
CLKOUT Fall Time
ns
ns
ns
TCH1CH2
TCL2CL1
6
6
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 = 5.5V. TA = 70￮C.
4. Tested under worst case conditions: VCC = 4.5V. TA = 0￮C.
®
IA211080711-09
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