参数资料
| 型号： | AS1119-BWLT |
| 厂商： | ams |
| 文件页数： | 12/31页 |
| 文件大小： | 0K |
| 描述： | IC LED 144CH DRIVER 36WLCSP |
| 标准包装： | 1 |
| 显示器类型： | LED |
| 配置： | 点阵 |
| 接口： | I²C |
| 电流 - 电源： | 4mA |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 36-UFBGA，WLCSP |
| 供应商设备封装： | 36-WLCSP |
| 包装： | 标准包装 |
| 其它名称： | AS1119-BWLTDKR |
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AS1119
Datasheet - D e t a i l e d D e s c r i p t i o n
acknowledge bit on the last byte that has been clocked out of the slave. In this case, the slave must leave the
data line HIGH to enable the master to generate the STOP condition.
- Figure 15 on page 10 details how data transfer is accomplished on the I2C bus. Depending upon the state of the
R/W bit, two types of data transfer are possible:
- Master Transmitter to Slave Receiver . The first byte transmitted by the master is the slave address, followed by
a number of data bytes. The slave returns an acknowledge bit after the slave address and each received byte.
- Slave Transmitter to Master Receiver . The first byte, the slave address, is transmitted by the master. The slave
then returns an acknowledge bit. Next, a number of data bytes are transmitted by the slave to the master. The
master returns an acknowledge bit after all received bytes other than the last byte. At the end of the last received
byte, a not-acknowledge is returned. The master device generates all of the serial clock pulses and the START
and STOP conditions. A transfer is ended with a STOP condition or a repeated START condition. Since a
repeated START condition is also the beginning of the next serial transfer, the bus will not be released.
The AS1119 can operate in the following slave modes:
- Slave Receiver Mode . Serial data and clock are received through SDA and SCL. After each byte is received, an
acknowledge bit is transmitted. START and STOP conditions are recognized as the beginning and end of a serial
transfer. Address recognition is performed by hardware after reception of the slave address and direction bit.
- Slave Transmitter Mode . The first byte (the slave address) is received and handled as in the slave receiver
mode. However, in this mode the direction bit will indicate that the transfer direction is reversed. Serial data is
transmitted on SDA by the AS1119 while the serial clock is input on SCL. START and STOP conditions are recog-
nized as the beginning and end of a serial transfer.
I2C Device Address Byte
The address byte (see Figure 16) is the first byte received following the START condition from the master device.
Figure 16. I2C Device Address Byte
MSB
6
5
4
3
2
1
LSB
address:
0
1
1
1
0
AD1
AD0
R/W
- The bit 1 and bit 2 of the address byte are the device select pins AD0 and AD1, which must be set to V DD or to
GND. A maximum of four devices with the same pre-set code can therefore be connected on the same bus at
one time.
- The last bit of the address byte (R/W) define the operation to be performed. When set to a 1 a read operation is
selected; when set to a 0 a write operation is selected.
Following the START condition, the AS1119 monitors the I2C bus, checking the device type identifier being transmitted. Upon receiving the
address code, and the R/W bit, the slave device outputs an acknowledge signal on the SDA line.
Command Byte
Figure 17. Command Byte
MSB
A7
6
A6
5
A5
4
A4
3
A3
2
A2
1
A1
LSB
A0
Revision 1.04
11 - 30
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| AS1119DB | 制造商:ams 功能描述: |
| AS1119-DB | 制造商:ams 功能描述:AS1119 Demo Board with LED clip-on |
| AS1119-WK_DK_ST | 功能描述:AS1119 18, Non-Isolated Output LED Driver Evaluation Board 制造商:ams 系列:- 零件状态:有效 电流 - 输出/通道:- 输出和类型:18，非隔离 电压 - 输出:- 特性:可调光 电压 - 输入:2.7 V ~ 5.5 V 所含物品:板 使用的 IC/零件:AS1119 标准包装:1 |
| AS1119-XXX-I-A1-D | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Analog Filter |
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