ꢀ ꢁ ꢂ ꢃ ꢄꢅ ꢆꢇ ꢈꢉꢄ ꢅ
ꢊ ꢋ ꢌꢍ ꢎꢏꢐ ꢑꢋ ꢒ ꢀ ꢎ ꢋ ꢓꢋ ꢀꢔꢕ ꢂ ꢋ ꢓꢒ ꢔꢕ ꢐ ꢖꢑ ꢇꢍꢂ ꢂꢑ ꢖ
SPRS080F − MARCH 1999 − REVISED OCTOBER 2008
general-purpose input/output (GPIO) timing
timing requirements for GPIO (see Figure 26)
MIN
MAX
UNIT
Setup time, GPIOx input valid before CLKOUT high, GPIOx configured as
general-purpose input.
t
t
7
ns
su(GPIO-COH)
Hold time, GPIOx input valid after CLKOUT high, GPIOx configured as general-purpose
input.
0
ns
h(GPIO-COH)
switching characteristics for GPIO (see Figure 26)
PARAMETER
MIN
MAX
UNIT
Delay time, CLKOUT high to GPIOx output change. GPIOx configured as
general-purpose output.
t
0
5
ns
d(COH-GPIO)
CLKOUT
t
su(GPIO-COH)
t
h(GPIO-COH)
GPIOx Input Mode
GPIOx Output Mode
t
d(COH-GPIO)
Figure 26. GPIO Timings
58
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443
TI [ TEXAS INSTRUMENTS ]
