DS12C887A+ Maxim Integrated Products, DS12C887A+ Datasheet - Page 3
![IC RTC W/RAM 128 BYTE 24-EDIP](/photos/6/58/65847/175-24-dip_sml.jpg)
DS12C887A+
Manufacturer Part Number
DS12C887A+
Description
IC RTC W/RAM 128 BYTE 24-EDIP
Manufacturer
Maxim Integrated Products
Type
Clock/Calendar/NVSRAMr
Datasheet
1.DS12885N.pdf
(22 pages)
Specifications of DS12C887A+
Memory Size
113B
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
Through Hole
Package / Case
24-DIP (600 mil) Module
Function
Clock/Calendar/Alarm
Rtc Memory Size
113 Byte
Supply Voltage (max)
5.5 V
Supply Voltage (min)
4.5 V
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Mounting Style
Through Hole
Rtc Bus Interface
Multiplexed
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
AC ELECTRICAL CHARACTERISTICS
(V
DC ELECTRICAL CHARACTERISTICS
(V
Cycle Time
Pulse Width, DS Low or R/W High
Pulse Width, DS High or R/W Low
Input Rise and Fall
R/W Hold Time
R/W Setup Time Before DS/E
Chip-Select Setup Time Before
DS or R/W
Chip-Select Hold Time
Read-Data Hold Time
Write-Data Hold Time
Address Valid Time to AS Fall
Address Hold Time to AS Fall
Delay Time DS/E to AS Rise
Pulse Width AS High
Delay Time, AS to DS/E Rise
Output Data Delay Time from DS
or R/W
Data Setup Time
Reset Pulse Width
IRQ Release from DS
IRQ Release from RESET
V
T
V
CC
A
CC
BAT
BAT
= +25°C, V
= 4.5V to 5.5V, T
= 0V, V
Current (OSC On);
Current (Oscillator Off)
PARAMETER
PARAMETER
BAT
BACKUP
= 3.0V, T
A
= 3.0V
= over the operating range.) (Note 2)
A
= over the operating range, unless otherwise noted.) (Note 2)
SYMBOL
SYMBOL
PW
I
PW
PW
t
BATDR
t
t
t
t
t
t
t
t
t
t
t
t
ASED
t
RWH
DHW
DSW
IRDS
t
I
R
RWS
t
DHR
DDR
RWL
CYC
t
AHL
ASD
ASL
IRR
BAT
CH
CS
, t
ASH
EH
EL
F
_____________________________________________________________________
(Note 8)
(Note 8)
CONDITIONS
CONDITIONS
Real-Time Clocks
MIN
MIN
385
150
125
100
10
50
20
10
30
10
20
60
40
20
0
0
5
TYP
TYP
MAX
MAX
120
500
100
DC
30
80
2
2
UNITS
UNITS
nA
nA
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
µs
µs
3