參數(shù)資料
型號(hào): DS1554P-100
英文描述: 256K NV Y2KC Timekeeping RAM
中文描述: 256K內(nèi)存時(shí)鐘非易失Y2KC
文件頁(yè)數(shù): 10/21頁(yè)
文件大?。?/td> 284K
代理商: DS1554P-100
DS1554
10 of 21
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.
ABSOLUTE MAXIMUM RATINGS*
Voltage on Any Pin Relative to Ground
Operating Temperature
Storage Temperature
Soldering Temperature
-5.0V to +6.0V
0
°
C to 70
°
C
-55
°
C to +125
°
C
260°C for 10 seconds (See Note 8)
* 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.
RECOMMENDED DC OPERATING CONDITIONS
PARAMETER
Logic 1 Voltage All Inputs
V
CC
= 5V
±
10%
V
CC
= 3.3V
±
10%
Logic 0 Voltage All Inputs
V
CC
= 5V
±
10%
V
CC
= 3.3V
±
10%
(0
°
C to 70
°
C)
UNITS
SYMBOL
MIN
TYP
MAX
NOTES
V
IH
V
IH
2.2
2.0
V
CC
+0.3V
V
CC
+0.3V
V
V
1
1
V
IL
V
IL
-0.3
-0.3
0.8
0.6
1
1
DC ELECTRICAL CHARACTERISTICS
PARAMETER
Active Supply Current
(0
°
C to 70
°
C; V
CC
= 5.0V
±
=
10%)
TYP
MAX
X
75
X
6
X
4
SYMBOL
I
CC
I
CC1
I
CC2
MIN
UNITS
mA
mA
mA
NOTES
2, 3
2, 3
2, 3
TTL Standby Current (
CE
=V
IH
)
CMOS Standby Current
(
CE
=
V
CC
- 0.2V)
Input Leakage Current (any input)
Output Leakage Current (any
output)
Output Logic 1 Voltage
(I
OUT
= -1.0 mA)
Output Logic 0 Voltage
(I
OUT
= 2.1 mA, DQ0-7 Outputs)
(I
OUT
= 10.0 mA,
IRQ
/FT and
RST
outputs)
Write Protection Voltage
Battery Switch Over Voltage
I
IL
I
OL
-1
-1
+1
+1
μ
A
μ
A
V
OH
2.4
V
1
V
OL1
V
OL2
0.4
0.4
V
V
1
1, 5
V
PF
V
SO
4.25
4.37
V
BAT
4.50
V
V
1
1, 4
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