DS1554-100 DALLAS [Dallas Semiconductor], DS1554-100 Datasheet - Page 10

• Manufacturer Part Number: DS1554-100
• Description: 256K NV Y2KC Timekeeping RAM
• Manufacturer: DALLAS [Dallas Semiconductor]

POWER-ON DEFAULT STATES
Upon application of power to the device, the following register bits are set to a 0:
WDS=0, BMB0-BMB4=0, RB0-RB1=0, AE=0, ABE=0.
Voltage on Any Pin Relative to Ground
Operating Temperature
Storage Temperature
Soldering Temperature
* This is a stress rating only and functional operation of the device at these or any other conditions above
RECOMMENDED DC OPERATING CONDITIONS
DC ELECTRICAL CHARACTERISTICS
ABSOLUTE MAXIMUM RATINGS*
Logic 1 Voltage All Inputs
Logic 0 Voltage All Inputs
PARAMETER
Active Supply Current
TTL Standby Current (
CMOS Standby Current
(
Input Leakage Current (any input)
Output Leakage Current (any
output)
Output Logic 1 Voltage
(I
Output Logic 0 Voltage
(I
(I
Write Protection Voltage
Battery Switch Over Voltage
RST
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.
CE
OUT
OUT
OUT
outputs)
= -1.0 mA)
= 2.1 mA, DQ0-7 Outputs)
= 10.0 mA,
V
V
V
V
=V
PARAMETER
CC
CC
CC
CC
CC
= 5V 10%
= 3.3V 10%
= 5V 10%
= 3.3V 10%
- 0.2V)
IRQ
/FT and
CE
=V
IH
)
SYMBOL
V
V
V
V
SYMBOL
IH
IH
IL
IL
V
V
V
V
I
I
V
I
I
CC1
CC2
I
CC
OL
OL1
OL2
IL
OH
SO
PF
10 of 21
MIN
-0.3
-0.3
2.2
2.0
-5.0V to +6.0V
0 C to 70 C
-55 C to +125 C
260°C for 10 seconds (See Note 8)
MIN
4.25
2.4
-1
-1
TYP
(0 C to 70 C; V
TYP
V
4.37
X
X
X
BAT
V
V
CC
CC
MAX
MAX
0.8
0.6
+0.3V
+0.3V
4.50
0.4
0.4
+1
+1
75
6
4
CC
UNITS
UNITS
mA
mA
mA
= 5.0V =10%)
V
V
V
V
V
V
V
(0 C to 70 C)
A
A
NOTES
NOTES
2, 3
2, 3
2, 3
1, 5
1, 4
1
1
1
1
1
1
1
DS1554