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參數(shù)資料
| 型號(hào)： | DS1339C-2 |
| 英文描述： | I2C Serial Real-Time Clock |
| 中文描述： | I2C串行實(shí)時(shí)時(shí)鐘 |
| 文件頁(yè)數(shù)： | 15/18頁(yè) |
| 文件大?。?/td> | 279K |
| 代理商： | DS1339C-2 |
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DS1339 I
2
C Serial Real-Time Clock
15 of 18
Figure 7. Programmable Trickle Charger
I
2
C SERIAL DATA BUS
The DS1339 supports the I
2
C bus protocol. A device that sends data onto the bus is defined as a transmitter and a
device receiving data as a receiver. The device that controls the message is called a master. The devices that are
controlled by the master are referred to as slaves. The bus must be controlled by a master device that generates
the serial clock (SCL), controls the bus access, and generates the START and STOP conditions. The DS1339
operates as a slave on the I
C bus. Within the bus specifications, a standard mode (100kHz cycle rate) and a fast
mode (400kHz cycle rate) are defined. The DS1339 works in both modes. Connections to the bus are made via the
open-drain I/O lines SDA and SCL.
The following bus protocol has been defined (Figure 8):
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 are 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 a
START condition.
Stop data transfer:
A change in the state of the data line, from LOW to HIGH, while the clock line 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 must be changed during the LOW
period of the clock signal. There is one clock pulse per bit of data.
1 OF 16 SELECT
NOTE:
ONLY 1010 ENABLES CHARGER
1 OF 2
SELECT
1 OF 3
SELECT
TCS3
BIT 7 BIT 6 BIT 5 BIT 4 BIT 3
TCS2
TCS1
TCS0
DS1
DS0
BIT 2
ROUT1
BIT 1 BIT 0
ROUT0
250
2k
4k
R1
R3
R2
TRICKLE CHARGE REGISTER
TCS
0-3
= TRICKLE CHARGER SELECT
DS
0-1
= DIODE SELECT
ROUT
0-1
= RESISTOR SELECT
V
CC
V
BACKUP
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| DS1345ABL-100-IND | NVRAM (Battery Based) |
| DS1345ABL-70 | NVRAM (Battery Based) |
| DS1345ABL-70-IND | NVRAM (Battery Based) |
| DS1345ABP-100 | NVRAM (Battery Based) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1339C-2- | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C Serial Real-Time Clock |
| DS1339C-2# | 功能描述:實(shí)時(shí)時(shí)鐘 I2C Serial 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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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 |
| DS1339C-2+ | 制造商:Maxim Integrated Products 功能描述:REAL TIME CLOCK SERL 16SOIC W - Bulk |
| DS1339C-3 | 功能描述:實(shí)時(shí)時(shí)鐘 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(shí)間格式:HH:MM:SS RTC 存儲(chǔ)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 |
| DS1339C-3- | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C Serial Real-Time Clock |
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