DS1685-3_12 MAXIM [Maxim Integrated Products], DS1685-3_12 Datasheet - Page 26
![no-image](/images/no-image-200.jpg)
DS1685-3_12
Manufacturer Part Number
DS1685-3_12
Description
3V/5V Real-Time Clocks
Manufacturer
MAXIM [Maxim Integrated Products]
Datasheet
1.DS1685-3_12.pdf
(34 pages)
- Current page: 26 of 34
- Download datasheet (655Kb)
RTC AC TIMING CHARACTERISTICS
(V
AC TEST CONDITIONS
Output Load: 50pF
Input Pulse Levels: 0 to 3.0V
Timing Measurement Reference Levels
Input Pulse Rise and Fall Times: 5ns
Cycle Time
Pulse Width, RD/WR Low
Pulse Width, RD/WR High
Input Rise and Fall Time
Chip-Select Setup Time
Before WR or RD
Chip-Select Hold Time
Read-Data Hold Time
Write-Data Hold Time
Muxed Address Valid Time to
ALE Fall
Muxed Address Hold Time
from ALE Fall
RD or WR High Setup to ALE
Rise
Pulse-Width ALE High
ALE Low Setup to RD or WR
Fall
Output-Data Delay Time from
RD
Data Setup Time
IRQ Release from RD
CC
= 3.0V±10%, T
Input : 1.5V
Output: 1.5V
PARAMETER
A
= 0°C to +70°C, T
SYMBOL
PW
P W
5 B
PW
t
t
A
t
t
t
4 B
t
t
t
t
R
t
ASED
t
t
t
DHW
DSW
CYC
DHR
ASD
DDR
ASL
AHL
IRD
CS
CH
= -40°C to +85°C)
, t
RWH
RWL
ASH
F
26 of 34
MIN
260
100
100
20
10
30
15
30
80
30
20
60
0
0
TYP
MAX
DC
30
50
80
2
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
NOTES
6
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