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參數(shù)資料
| 型號： | DS1672S-33 |
| 英文描述： | Low Voltage Serial Timekeeping Chip |
| 中文描述： | 低電壓串行時鐘芯片 |
| 文件頁數(shù)： | 11/13頁 |
| 文件大小： | 104K |
| 代理商： | DS1672S-33 |
DS1672
11 of 13
POWER-UP DOWN CHARACTERISTICS
PARAMETER
V
CC
Detect to
RST
(V
CC
Falling)
V
CC
Detect to
RST
(V
CC
Rising)
V
CC
Fall Time; V
PF(MAX)
to V
PF(MIN)
V
CC
Rise Time; V
PF(MIN)
to V
PF(MAX)
(-40
°
C to +85
°
C)
UNITS
μs
ms
μ
s
μ
s
SYMBOL
t
RPD
t
RPU
t
F
t
R
MIN
TYP
MAX
10
NOTES
250
6
300
0
WARNING:
Under no circumstances are negative undershoots, of any amplitude, allowed when device is in write
protection.
NOTES:
1.
All voltages are referenced to ground.
2.
After this period, the first clock pulse is generated.
3.
A device must internally provide a hold time of at least 300 ns for the SDA signal (referenced to the
V
IHMIN
of the SCL signal) in order to bridge the undefined region of the falling edge of SCL.
4.
The maximum t
HD:DAT
has only to be met if the device does not stretch the LOW period (t
LOW
) of the
SCL signal.
5.
C
B
- total capacitance of one bus line in pF.
6.
If the
EOSC
bit in the Control Register is set to logic 1, t
RPU
is equal to 250 ms plus the start-up time
of the crystal oscillator.
7.
I
CCA
specified with SCL clocking at max frequency (400 kHz).
8.
I
CCS
specified with V
CC
= 3.3V and SDA, SCL=3.3V.
9.
I
CCS
specified with V
CC
= 3.0V and SDA, SCL=3.0V.
10.
I
CCS
specified with V
CC
= 2.0V and SDA, SCL=2.0V.
11.
A fast mode device can be used in a standard mode system, but the requirement t
SU:DAT
>= to 250 ns
must then be met. This will automatically be 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 = 1250 ns before the SCL line is released.
12.
I
OSC
specified with V
CC
= 0V, V
BACKUP
=3.6V and oscillator enabled.
13.
I
BACKUP
specified with V
CC
= 0V, V
BACKUP
=3.6V and oscillator disabled.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1672S-33/T&R | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 8SOIC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC TIMEKEEPER 3.3V 32-BIT 8-SOIC 制造商:Maxim Integrated Products 功能描述:Real Time Clock I2C 32-Bit Binary Counter RTC |
| DS1672S-33/T&R | 功能描述:實時時鐘 I2C 32-Bit Binary Counter RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1672S-33/TR | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C 32-Bit Binary Counter RTC |
| DS1672S-33+ | 功能描述:實時時鐘 I2C 32-Bit Binary Counter RTC RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| DS1672S-33+T&R | 制造商:Maxim Integrated Products 功能描述:32 BIT COUNTER SOIC 3.3V TRL LFREE 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 8SOIC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 8SOIC - Cut TR (SOS) 制造商:Maxim Integrated Products 功能描述:Maxim Integrated DS1672S-33+T&R Real Time Clocks (RTC) 制造商:Maxim Integrated Products 功能描述:IC TIMEKEEPER 3.3V 32-BIT 8-SOIC 制造商:Maxim Integrated Products 功能描述:Real Time Clock I2C 32-Bit Binary Counter RTC |
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