DS1556 Maxim, DS1556 Datasheet - Page 11

• Manufacturer Part Number: DS1556
• Description: The DS1556 is a full-function, year-2000-compliant (Y2KC), real-time clock/calendar (RTC) with an RTC alarm, watchdog timer, power-on reset, battery monitor, and 128k x 8 nonvolatile static RAM
• Manufacturer: Maxim

ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………..……………………………………………..-0.3V to +6.0V
Storage Temperature Range
Lead Temperature (soldering, 10s).………..........................................................................................................................+260°C
Soldering Temperature (reflow, PowerCap)………………………………….....................................................................+260°C
This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operation
sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of time may affect
reliability.
OPERATING RANGE
RECOMMENDED DC OPERATING CONDITIONS
(Over the Operating Range)
DC ELECTRICAL CHARACTERISTICS
(V
Logic 1 Voltage All Inputs
(Note 1)
Logic 0 Voltage All Inputs
(Note 1)
Active Supply Current
TTL Standby Current
(CE = V
CMOS Standby Current
(CE V
Input Leakage Current
(Any Input)
Output Leakage Current
(Any Output)
Output Logic 1 Voltage
(I
Output Logic 0 Voltage
Write Protection Voltage
Battery Switchover Voltage
CC
OUT
= 5.0V 10%, Over the Operating Range.)
= -1.0 mA)
EDIP........................………………………………………………………………...................................-40°C to +85°C
PowerCap..............………………………………………………….…………………………………..-55°C to +125°C
Note: EDIP is hand or wave-soldered only.
PARAMETER
PARAMETER
IH
CC
Commercial
)
Industrial
- 0.2V)
RANGE
SYMBOL
SYMBOL
V
V
V
I
I
V
V
V
V
V
V
I
I
I
CC1
CC2
CC
OL
OL1
OL2
IL
OH
IH
IH
SO
IL
IL
PF
TEMP RANGE
-40°C to +85°C
0°C to +70°C
V
V
V
V
(Notes 2, 3, 11)
(Notes 2, 3)
(Notes 2, 3)
(Note 1)
I
Outputs (Note 1)
I
and RST Outputs
(Notes 1, 5)
(Note 1)
(Notes 1,4)
OUT
OUT
CC
CC
CC
CC
CONDITIONS
CONDITIONS
= 5V 10%
= 3.3V 10%
= 5V 10%
= 3.3V 10%
= 2.1 mA, DQ0–7
= 7.0 mA, IRQ/FT,
11 of 18
DS1556 1M, Nonvolatile, Y2K-Compliant Timekeeping RAM
MIN
-0.3
-0.3
2.2
2.0
MIN
4.20
2.4
-1
-1
TYP
3.3V 10% or 5V 10%
3.3V 10% or 5V 10%
TYP
V
30
BAT
4
2
MAX
V
V
0.3V
0.3V
+0.8
+0.6
V
CC
CC
CC
MAX
+
+
4.50
0.4
0.4
+1
+1
85
6
6
UNITS
V
V
UNITS
mA
mA
mA
A
A
V
V
V
V
V