Datasheet

DS17285/DS17287/DS17485/DS17487/DS17885/DS17887
Real-Time Clocks
_____________________________________________________________________ 5
Read Timing
t
ASL
t
DDR
PW
ASH
CS
WR
ALE
RD
AD0–AD7
t
ASD
PW
RWL
t
CS
t
DHR
t
AHL
t
CH
t
CYC
PW
RWH
t
ASED
IRQ
t
IRD
t
ASD
AD0–AD7
CS, WR, RD
HIGH IMPEDANCE
DON'T CARE
VALID
RECOGNIZED
RECOGNIZED
VALID
V
CC
t
F
V
PF(MAX)
V
PF(MIN)
t
REC
t
R
Power-Up/Power-Down Timing