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參數(shù)資料
| 型號： | M41T0M |
| 廠商： | 意法半導體 |
| 英文描述： | SERIAL REAL-TIME CLOCK |
| 中文描述： | 串行實時時鐘 |
| 文件頁數(shù)： | 9/20頁 |
| 文件大?。?/td> | 260K |
| 代理商： | M41T0M |
9/20
M41T0
OPERATION
The M41T0 clock operates as a slave device on
the serial bus. Access is obtained by implementing
a start condition followed by the correct slave ad-
dress (D0h). The 8 bytes contained in the device
can then be accessed sequentially in the following
order:
1.
Seconds Register
2.
Minutes Register
3.
Century/Hours Register
4.
Day Register
5.
Date Register
6.
Month Register
7.
Years Register
8.
Control Register
2-Wire Bus Characteristics
This bus is intended for communication between
different ICs. It consists of two lines: one bi-direc-
tional for data signals (SDA) and one for clock sig-
nals (SCL). Both the SDA and the SCL lines must
be connected to a positive supply voltage via a
pull-up resistor.
The following protocol has been defined:
– Data transfer may be initiated only when the bus
is not busy.
– During data transfer, the data line must remain
stable whenever the clock line is High. Changes
in the data line while the clock line is High will be
interpreted as control signals.
Accordingly, the following bus conditions have
been defined:
Bus not busy.
Both data and clock lines remain
High.
Start data transfer.
A change in the state of the
data line, from High to Low, while the clock is High,
defines the START condition.
Stop data transfer.
A change in the state of the
data line, from Low to High, while the clock is High,
defines the STOP condition.
Data valid.
The state of the data line represents
valid data when after a start condition, the data line
is stable for the duration of the High period of the
clock signal. The data on the line may be changed
during the Low period of the clock signal. There is
one clock pulse per bit of data.
Each data transfer is initiated with a start condition
and terminated with a stop condition. The number
of data bytes transferred between the start and
stop conditions is not limited. The information is
transmitted byte-wide and each receiver acknowl-
edges with a ninth bit.
By definition, a device that gives out a message is
called “transmitter”, the receiving device that gets
the message is called “receiver”. The device that
controls the message is called “master”. The de-
vices that are controlled by the master are called
“slaves”.
Acknowledge.
Each byte of eight bits is followed
by one Acknowledge Bit. This Acknowledge Bit is
a low level put on the bus by the receiver, whereas
the master generates an extra acknowledge relat-
ed clock pulse.
A slave receiver which is addressed is obliged to
generate an acknowledge after the reception of
each byte. Also, a master receiver must generate
an acknowledge after the reception of each byte
that has been clocked out of the slave transmitter.
The device that acknowledges has to pull down
the SDA line during the acknowledge clock pulse
in such a way that the SDA line is a stable Low dur-
ing the High period of the acknowledge related
clock pulse. Of course, setup and hold times must
be taken into account. A master receiver must sig-
nal an end-of-data to the slave transmitter by not
generating an acknowledge on the last byte that
has been clocked out of the slave. In this case, the
transmitter must leave the data line High to enable
the master to generate the STOP condition.
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| M41T0M6E | SERIAL REAL-TIME CLOCK |
| M41T0M6F | SERIAL REAL-TIME CLOCK |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| M41T0M6 | 功能描述:實時時鐘 ENV 511-M41T0M6E 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41T0M6E | 功能描述:實時時鐘 Serial 64 (8X8) 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41T0M6F | 功能描述:實時時鐘 Serial 64 (8X8) 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: 安裝風格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
| M41T0M6T | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:SERIAL REAL-TIME CLOCK |
| M41T0-SKT | 制造商:P&S 功能描述:Serial Real-Time Clock 制造商:P&S 功能描述:Serial RTC |
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