DS17287 Maxim, DS17287 Datasheet - Page 3

• Manufacturer Part Number: DS17287
• Description: The DS17285, DS17485, DS17885, DS17287, DS17487, and DS17887 real-time clocks (RTCs) are designed to be successors to the industry-standard DS12885 and DS12887
• Manufacturer: Maxim

DC ELECTRICAL CHARACTERISTICS
(V
AC ELECTRICAL CHARACTERISTICS
(V
V
On); T
V
(Oscillator Off)
Cycle Time
Pulse Width, RD or WR Low
Pulse Width, RD or WR High
Input Rise and Fall
Chip-Select Setup Time Before
RD or WR
Chip-Select Hold Time
Read-Data Hold Time
Write-Data Hold Time
Address Setup Time to ALE Fall
Address Hold Time to ALE Fall
RD or WR High Setup to ALE
Rise
Pulse Width ALE High
Delay Time ALE Low to RD Low
Output Data Delay Time from RD
Data Setup Time
IRQ Release from RD
CC
CC
BAT
BAT
= 0V, V
= +4.5V to +5.5V, T
or V
or V
A
= +25°C, V
BAUX
BAUX
PARAMETER
PARAMETER
BAT
Current (Oscillator
Current
= 3.0V, T
BAT
= 3.0V
A
A
= Over the operating range, unless otherwise noted.) (Note 2)
= Over the operating range, unless otherwise noted.) (Note 1)
SYMBOL
SYMBOL
PW
PW
PW
I
BATDR
t
t
t
t
t
t
t
t
t
ASED
I
t
DHW
DSW
t
R
t
DHR
DDR
CYC
t
AHL
ASD
BAT
ASL
IRD
CH
CS
RWH
RWL
, t
ASH
_____________________________________________________________________
F
(Note 7)
(Note 7)
(Note 8)
CONDITIONS
CONDITIONS
Real-Time Clocks
MIN
MIN
240
120
80
20
10
20
10
25
40
30
20
30
0
0
TYP
TYP
500
50
MAX
MAX
700
400
120
DC
30
50
2
UNITS
UNITS
nA
nA
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
3