DS14285S/T&R Maxim Integrated Products, DS14285S/T&R Datasheet - Page 18
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DS14285S/T&R
Manufacturer Part Number
DS14285S/T&R
Description
IC RTC W/NV RAM CNTRL 24-SOIC
Manufacturer
Maxim Integrated Products
Type
Clock/Calendar/NVSRAMr
Datasheet
1.DS14285Q.pdf
(26 pages)
Specifications of DS14285S/T&R
Memory Size
114B
Time Format
HH:MM:SS (12/24 hr)
Date Format
YY-MM-DD-dd
Interface
Parallel
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
24-SOIC (7.5mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
AC ELECTRICAL CHARACTERISTICS
(Over the operating range)
AC TEST CONDITIONS
Input Pulse Level: 0 to 3.0V
Input Rise/Fall Times: 5ns
Input and Output Timing Reference Levels: 1.5V
Cycle
Pulse Width, DS/E Low or RD/
High
Pulse Width, DS/E Low or RD/
Low
Input Rise and Fall Time
R/
R/
Chip Select Setup Time Before DS,
Chip Select Hold Time
Read Data Hold Time
Write Data Hold Time
Muxed Address Valid Time to AS/ALE
Fall
Muxed Address Hold Time
Delay Time DS/E to AS/ALE Rise
Pulse Width AS/ALE High
Delay Time, AS/ALE to DS/E Rise
Output Data Delay Time From DS/E or
Data Setup Time
Reset Pulse Width
RD
IRQ
IRQ
WR
W
W
, or
Release from DS
Release from
Hold Time
Setup Time Before DS/E
RD
PARAMETER
RESET
WR
WR
SYMBOL
PW
PW
PW
t
t
t
t
t
t
t
t
t
t
t
t
t
t
ASED
R
DHW
t
RWH
IRDS
RWS
t
DHR
DDR
DSW
RWL
CYC
t
AHL
ASD
ASL
IRR
CH
CS
, t
ASH
EH
EL
F
18 of 26
MIN
225
115
80
10
10
20
10
30
10
20
60
35
10
60
0
0
5
TYP
MAX
DC
30
50
75
2
2
UNITS
µs
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
NOTES
9