參數(shù)資料
型號: DS1554WP-120
廠商: DALLAS SEMICONDUCTOR
元件分類: Timer or RTC
英文描述: 0 TIMER(S), REAL TIME CLOCK
封裝: POWERCAP-34
文件頁數(shù): 2/21頁
文件大小: 284K
代理商: DS1554WP-120
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
-5.0V to +6.0V
Operating Temperature
0
°C to 70°C
Storage Temperature
-55
°C to +125°C
Soldering Temperature
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
(0
°C to 70°C)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Logic 1 Voltage All Inputs
VCC = 5V
±10%
VIH
2.2
VCC +0.3V
V
1
VCC = 3.3V
±10%
VIH
2.0
VCC +0.3V
V
1
Logic 0 Voltage All Inputs
VCC = 5V
±10%
VIL
-0.3
0.8
1
VCC = 3.3V
±10%
VIL
-0.3
0.6
1
DC ELECTRICAL CHARACTERISTICS
(0
°C to 70°C; V
CC = 5.0V
±=10%)
PARAMETER
SYMBOL
MIN
TYP
MAX
UNITS
NOTES
Active Supply Current
ICC
X
75
mA
2, 3
TTL Standby Current ( CE =VIH )
ICC1
X
6
mA
2, 3
CMOS Standby Current
( CE
≥=V
CC - 0.2V)
ICC2
X
4
mA
2, 3
Input Leakage Current (any input)
IIL
-1
+1
A
Output Leakage Current (any
output)
IOL
-1
+1
A
Output Logic 1 Voltage
(IOUT = -1.0 mA)
VOH
2.4
V
1
Output Logic 0 Voltage
(IOUT = 2.1 mA, DQ0-7 Outputs)
VOL1
0.4
V
1
(IOUT = 10.0 mA, IRQ /FT and
RST
outputs)
VOL2
0.4
V
1, 5
Write Protection Voltage
VPF
4.25
4.37
4.50
V
1
Battery Switch Over Voltage
VSO
VBAT
V
1, 4
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