DS1685S-3/T&R Maxim Integrated Products, DS1685S-3/T&R Datasheet - Page 26
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DS1685S-3/T&R
Manufacturer Part Number
DS1685S-3/T&R
Description
Real Time Clock
Manufacturer
Maxim Integrated Products
Datasheet
1.DS1685S-5.pdf
(34 pages)
Specifications of DS1685S-3/T&R
Function
Clock, Calendar, Alarm
Rtc Memory Size
242 B
Supply Voltage (max)
3.7 V
Supply Voltage (min)
2.7 V
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
SMD/SMT
Rtc Bus Interface
Multiplexed
Package / Case
SOIC-24
Time Format
HH:MM:SS, Binary
Date Format
DW:DM:M:Y, Binary
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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
PW
PW
t
A
t
t
t
t
t
t
t
t
t
ASED
R
t
t
DHW
DSW
t
DHR
DDR
CYC
ASD
ASL
AHL
IRD
CH
= -40°C to +85°C)
CS
, t
RWL
RWH
ASH
F
26 of 34
MIN
260
100
100
20
10
30
15
30
80
30
20
60
0
0
TYP
DS1685/DS1687 3V/5V Real-Time Clocks
MAX
DC
30
50
80
2
UNITS
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
s
NOTES
6