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參數(shù)資料
| 型號(hào)： | DS1339U-3+T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 10/20頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC I2C W/ALARM 8-USOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 類型： | 時(shí)鐘/日歷 |
| 特點(diǎn)： | 警報(bào)器，閏年，方波輸出，涓流充電器 |
| 時(shí)間格式： | HH:MM:SS（12/24 小時(shí)） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | I²C，2 線串口 |
| 電源電壓： | 2.7 V ~ 3.3 V |
| 電壓 - 電源，電池： | 1.3 V ~ 3.7 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-uMAX |
| 包裝： | 帶卷 (TR) |
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DS1339 I
2C Serial Real-Time Clock
18 of 20
sets the register pointer on the DS1339, with the DS1339 acknowledging the transfer. The master may
then transmit zero or more bytes of data, with the DS1339 acknowledging each byte received. The
address pointer increments after each data byte is transferred. The master generates a STOP condition to
terminate the data write.
2) Slave Transmitter Mode (Read Mode): The first byte is received and handled as in the slave receiver
mode. However, in this mode, the direction bit indicates that the transfer direction is reversed. Serial data
is transmitted on SDA by the DS1339 while the serial clock is input on SCL. START and STOP conditions
are recognized as the beginning and end of a serial transfer (Figure 8). The slave address byte is the first
byte received after the START condition is generated by the master. The slave address byte contains the
7-bit DS1339 address, which is 1101000, followed by the direction bit (R/
W), which is 1 for a read. After
receiving and decoding the slave address byte the slave outputs an acknowledge on the SDA line. The
DS1339 then begins to transmit data starting with the register address pointed to by the register pointer. If
the register pointer is not written to before the initiation of a read mode the first address that is read is the
last one stored in the register pointer. The address pointer is incremented after each byte is transferred.
The DS1339 must receive a “not acknowledge” to end a read.
Figure 7. Data Write—Slave Receiver Mode
Figure 8. Data Read (from Current Pointer Location)—Slave Transmitter Mode
Figure 9. Data Read (Write Pointer, Then Read)—Slave Receive and Transmit
...
A
XXXXXXXX
A
S
0
XXXXXXXX
A
XXXXXXXX
A
XXXXXXXX
A P
S - Start
A - Acknowledge (ACK)
P - Stop
<R
/W
>
DATA TRANSFERRED
(X+1 BYTES + ACKNOWLEDGE)
1101000
<Slave Address>
<Word Address (n)>
<Data(n)>
<Data(n+1)>
<Data(n+X)>
Master to slave
Slave to master
...
A
XXXXXXXX
A
1101000
S
1
XXXXXXXX
A XXXXXXXX
XXXXXXXX
A P
<Data(n+2)>
<Data(n+X)>
A
S - Start
A - Acknowledge (ACK)
P - Stop
A - Not Acknowledge (NACK)
<R
W
>
DATA TRANSFERRED
(X+1 BYTES + ACKNOWLEDGE)
NOTE: LAST DATA BYTE IS FOLLOWED BY A NACK
<Slave Address>
<Data(n)>
<Data(n+1)>
Master to slave
Slave to master
...
A
XXXXXXXX
A
XXXXXXXX
A
XXXXXXXX
A P
S - Start
Sr - Repeated Start
A - Acknowledge (ACK)
P - Stop
A - Not Acknowledge (NACK)
DATA TRANSFERRED
(X+1 BYTES + ACKNOWLEDGE)
NOTE: LAST DATA BYTE IS FOLLOWED BY A NACK
A
XXXXXXXX
A
1101000
S
0
<R
W
>
<Word Address (n)>
A
1101000
Sr
1
<R
W
>
<Slave Address>
<Data(n)>
<Data(n+1)>
<Data(n+2)>
<Data(n+X)>
Master to slave
Slave to master
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| DS1340 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C RTC with Trickle Charger |
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| DS1340C-18 | 功能描述:實(shí)時(shí)時(shí)鐘 I2C RTC w/Trickle Charger 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 |
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