参数资料
| 型号： | NCP4208MNR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 17/30页 |
| 文件大小： | 0K |
| 描述： | IC CTLR 8PH VR11.1 PMBUS 48-QFN |
| 标准包装： | 2,500 |
| 应用： | 控制器，Intel VR11.1 |
| 输入电压： | 4.7 V ~ 5.75 V |
| 输出数： | 8 |
| 输出电压： | 0.16 V ~ 5 V |
| 工作温度： | 0°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 48-VFQFN 裸露焊盘 |
| 供应商设备封装： | 48-QFN（7x7） |
| 包装： | 带卷 (TR) |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页当前第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页
NCP4208
1
9
1
9
SCL
SDA
0
1
0
0
0
0
0
R/W
D7
D6
D5
D4
D3
D2
D1
D0
START BY
MASTER
1
FRAME 1
SERIAL BUS ADDRESS
BYTE
ACK. BY
NCP4208
9
1
FRAME 2
COMMAND CODE
ACK. BY
NCP4208
9
SCL
SDA
0
1
0
0
0
0
0
R/W
D7
D6
D5
D4
D3
D2
D1
D0
REPEATED START
BY MASTER
FRAME 1
SERIAL BUS ADDRESS
BYTE
ACK. BY
NCP4208
FRAME 2
DATA BYTE
FROM NCP4208
NO ACK. BY
MASTER
STOP BY
MASTER
Figure 13. Read Byte
3. It is not possible to read or write a data byte from a
data register without first writing to the address
pointer register, even if the address pointer register
is already at the correct value.
4. In addition to supporting the send byte, the
NCP4208 also supports the read byte, write byte,
read word and write word protocols.
Write Operations
The following abbreviations are used in the diagrams:
S—START
P—STOP
R—READ
W—WRITE
A—ACKNOWLEDGE
A—NO ACKNOWLEDGE
The NCP4208 uses the following I 2 C write protocols.
Send Byte
In this operation, the master device sends a single
command byte to a slave device as follows:
1. The master device asserts a start condition on SDA.
If the master is required to read data from the register
immediately after setting up the address, it can assert a repeat
start condition immediately after the final ACK and carry
out a single byte read without asserting an intermediate stop
condition.
Write Byte
In this operation, the master device sends a command byte
and one data byte to the slave device as follows: The master
device asserts a start condition on SDA.
1. The master sends the 7 ? bit slave address followed
by the write bit (low).
2. The addressed slave device asserts ACK on SDA.
3. The master sends a command code.
4. The slave asserts ACK on SDA.
5. The master sends a data byte.
6. The slave asserts ACK on SDA.
7. The master asserts a stop condition on SDA and
the transaction ends.
The byte write operation is shown Figure 15.
1 2 3 4 5 6 7 8
2. The master sends the 7 ? bit slave address followed
by the write bit (low).
S
SLAVE
ADDRESS
W A
COMMAND
CODE
A DATA A P
3. The addressed slave device asserts ACK on SDA.
S
W A
A P
4. The master sends a command code.
5. The slave asserts ACK on SDA.
6. The master asserts a stop condition on SDA and
the transaction ends.
For the NCP4208, the send byte protocol is used to clear
Faults. This operation is shown in Figure 14.
1 2 3 4 5 6
SLAVE COMMAND
ADDRESS CODE
Figure 15. Single Byte Write to a Register
Write Word
In this operation, the master device sends a command byte
and two data bytes to the slave device as follows:
1. The master device asserts a start condition on SDA.
2. The master sends the 7 ? bit slave address followed
by the write bit (low).
Figure 14. Send Byte Command
http://onsemi.com
17
相关PDF资料 |
PDF描述 |
|---|---|
| NCP4302BDR2G | IC REG CTRLR FLYBK ISO PWM 8SOIC |
| NCP4326DR2G | IC SECONDARY CTLR SW PS 16-SOIC |
| NCP4330DR2G | IC DRIVER POST REGULATION 8-SOIC |
| NCP4331DR2G | IC REG CTRLR BUCK PWM 16-SOIC |
| NCP4350DR2G | IC SUPERVISOR DESKTOP PS 16-SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP4300A | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Dual Operational Amplifier and Voltage Reference |
| NCP4300A/D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Dual Operational Amplifier and Voltage Reference |
| NCP4300A_05 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:Dual Operational Amplifier and Voltage Reference |
| NCP4300AD | 功能描述:运算放大器 - 运放 2.6V Ref. RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| NCP4300ADG | 功能描述:运算放大器 - 运放 2.6V Ref. Dual Op AMP RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
发布紧急采购，3分钟左右您将得到回复。