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参数资料
| 型号： | DS1374U-3 |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | I2C, 32-Bit Binary Counter Watchdog RTC with Trickle Charger and Reset Input/Output |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO10 |
| 封装： | 3 MM, MICRO, SOP-10 |
| 文件页数： | 5/15页 |
| 文件大小： | 616K |
| 代理商： | DS1374U-3 |
D
I
2
C, 32-Bit Binary Counter Watchdog RTC with
Trickle Charger and Reset Input/Output
_____________________________________________________________________
5
POWER-UP/POWER-DOWN CHARACTERISTICS
(T
A
= -40°C to +85°C) (Figure 3)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
V
CC
Detect to Recognize Inputs
(V
CC
Rising)
t
RPU
(Note 23)
250
ms
V
CC
Fall Time; V
PF(MAX)
to
V
PF(MIN)
t
F
300
μs
V
CC
Rise Time; V
PF(MIN)
to
V
PF(MAX)
t
R
0
μs
WARNING:
Under no circumstances are negative undershoots, of any amplitude, allowed when the device is in write protection.
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
Note 7:
Note 8:
Note 9:
Note 10:
The
RST
pin has an internal 50k
pullup resistor to V
CC
.
Note 11:
Trickle charger disabled.
Note 12:
I
CCA
—SCL clocking at max frequency = 400kHz.
Note 13:
Specified with I
2
C bus inactive.
Note 14:
Measured with a 32.768kHz crystal attached to the X1 and X2 pins.
Note 15:
WDSTR = 1. BBSQW = 1 is required for operation when V
CC
is below the power-fail trip point (or absent).
Note 16:
C
B
—total capacitance of one bus line in pF.
Note 17:
After this period, the first clock pulse is generated.
Note 18:
The maximum t
HD:DAT
only has to be met if the device does not stretch the low period (t
LOW
) of the SCL signal.
Note 19:
A device must internally provide a hold time of at least 300ns for the SDA signal (referred to as the V
IHMIN
of the SCL sig-
nal) to bridge the undefined region of the falling edge of SCL.
Note 20:
A fast-mode device can be used in a standard-mode system, but the requirement t
SU:DAT
≥
to 250ns must be met. This is
automatically the case if the device does not stretch the low period of the SCL signal. If such a device does stretch the low
period of the SCL signal, it must output the next data bit to the SDA line t
R
max + t
SU:DAT
= 1000 + 250 = 1250ns before
the SCL line is released.
Note 21:
Guaranteed by design. Not production tested.
Note 22:
The parameter t
OSF
is the period of time the oscillator must be stopped for the OSF flag to be set over the voltage range of
0V
≤
V
CC
≤
V
CC MAX
and 1.3V
≤
V
BACKUP
≤
3.7V.
Note 23:
This delay applies only if the oscillator is enabled and running. If the
EOSC
bit is 1, the startup time of the oscillator is
added to this delay.
Limits at -40°C are guaranteed by design and not production tested.
All voltages are referenced to ground.
V
BACKUP
should not exceed V
CC
MAXor 3.7V, whichever is greater.
The use of the 250
trickle-charge resistor is not allowed at V
CC
> 3.63V and should not be enabled.
Measured at V
CC
= typ, V
BACKUP
= 0V, register 09h = A5h.
Measured at V
CC
= typ, V
BACKUP
= 0V, register 09h = A6h.
Measured at V
CC
= typ, V
BACKUP
= 0V, register 09h = A7h.
SCL only.
SDA and SQW and
INT
.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1374U-3/T&R | 制造商:Maxim Integrated Products 功能描述:ELAPD TC 10PIN USOP 3.0 T&R - Tape and Reel |
| DS1374U-3+ | 功能描述:实时时钟 I2C 32-Bit Binary Counter Watchdog RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1374U-3+T&R | 制造商:Maxim Integrated Products 功能描述: 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 10USOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC RTC I2C W/CHARGER 10-USOP 制造商:Maxim Integrated Products 功能描述:Real Time Clock I2C 32-Bit Binary Counter Watchdog |
| DS1374U-3+T&R | 功能描述:实时时钟 I2C 32-Bit Binary Counter Watchdog RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1374U-33 | 功能描述:实时时钟 I2C 32-Bit Binary Counter Watchdog RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
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