EXPANDED DATA MEMORY WRITE CYCLE
DS2252T
AC CHARACTERISTICS (continued)
EXTERNAL CLOCK DRIVE
# PARAMETER
28 External Clock High Time
@ 12 MHz
@ 16 MHz
29 External Clock Low Time
@ 12 MHz
@ 16 MHz
30 External Clock Rise Time
@ 12 MHz
@ 16 MHz
31 External Clock Fall Time
@ 12 MHz
@ 16 MHz
(tA=0°C to70°C; VCC=5V ± 10%)
SYMBOL MIN
MAX UNITS
tCLKHPW
20
15
ns
ns
tCLKLPW
20
15
ns
ns
tCLKR
20
ns
15
ns
tCLKF
20
ns
15
ns
EXTERNAL CLOCK TIMING
11 of 15