Datasheet

79
RM57L843
www.ti.com SPNS215C –FEBRUARY 2014–REVISED JUNE 2016
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System Information and Electrical SpecificationsCopyright © 2014–2016, Texas Instruments Incorporated
6.6.1.4 External Clock Inputs
The device supports up to two external clock inputs. This clock input must be a square-wave input.
Table 6-15 specifies the electrical and timing requirements for these clock inputs.
Table 6-15. External Clock Timing and Electrical Specifications
PARAMETER MIN MAX UNIT
f
EXTCLKx
External clock input frequency 80 MHz
t
w(EXTCLKIN)H
EXTCLK high-pulse duration 6 ns
t
w(EXTCLKIN)L
EXTCLK low-pulse duration 6 ns
v
iL(EXTCLKIN)
Low-level input voltage –0.3 0.8 V
v
iH(EXTCLKIN)
High-level input voltage 2 VCCIO + 0.3 V