参数资料
| 型号： | SC900AMLTRT |
| 厂商： | Semtech |
| 文件页数： | 14/23页 |
| 文件大小： | 0K |
| 描述： | IC REG LDO ADJ .2A/.15A 20-MLPQ |
| 标准包装： | 1 |
| 稳压器拓扑结构： | 正，可调式 |
| 输出电压： | 1.45 V ~ 3 V，1.75 V ~ 3.3 V |
| 输入电压： | 2.7 V ~ 5.5 V |
| 电压 - 压降（标准）： | 0.2V @ 200mA，0.15V @ 150mA |
| 稳压器数量： | 5 |
| 电流 - 输出： | 200mA（最小），150mA（最小），150mA（最小），150mA（最小），150mA（最小） |
| 电流 - 限制（最小）： | 250mA |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-VFQFN 裸露焊盘 |
| 供应商设备封装： | 20-MLPQ（4x4） |
| 包装： | 剪切带 (CT) |
| 产品目录页面： | 1358 (CN2011-ZH PDF) |
| 其它名称： | SC900AMLCT |
SC900A
POWER MANAGEMENT
Applications Information (Cont.)
Using the I 2 C Interface
The SC900A is a read-write slave mode I 2 C device and complies with the Philips I 2 C standard version 2.1 dated January
2000. The SC900A has six user-accessible internal 8-bit registers. The I 2 C interface has been designed for program
? exibility, in that once the slave address has been sent to the SC900A enabling it to be a slave transmitter/receiver,
any register can be written to or read from independently of each other. While there is no auto increment/decrement
capability in the SC900A I 2 C logic, a tight software loop can be designed to randomly access the next register indepen-
dent of which register you have been accessing. The start and stop commands frame the datapacket and the repeat
start condition is allowed if necessary.
SC900A Limitations to the I 2 C Speci ? cations
Seven-bit addressing is required for communication with the SC900A; ten-bit addressing is not allowed. Any general
call address will be ignored by the SC900A. Note that the SC900A is not CBUS compatible. Finally, the SC900A can
operate in standard mode (100kbit/s) or fast mode (400kbit/s).
Supported Formats
Direct Format - Write
The simplest format for an I 2 C write is the direct format. After the start condition [S], the slave address is sent, followed
by an eighth bit indicating a write. The SC900A I 2 C then acknowledges that it is being addressed, and the master re-
sponds with an 8-bit data byte consisting of the register address. The slave acknowledges and the master sends the
appropriate 8-bit data byte. Once again the slave acknowledges and the master terminates the transfer with the stop
condition [P].
I 2 C Direct Format - Write
S
Slave Address
W A Register Address
A
Data
A P
S: Start Condition
W: Write = ‘0’
A: Acknowledge (sent by slave)
Slave Address: 7 bit
Register Address: 8 bit
Data: 8 bit
P: Stop condition
Combined Format - Read
After the start condition [S], the slave address is sent, followed by an eighth bit indicating a write. The SC900A I 2 C
then acknowledges that it is being addressed, and the master responds with an 8-bit data byte consisting of the reg-
ister address. The slave acknowledges and the master sends the repeated start condition [Sr]. Once again the slave
address is sent, followed by an eighth bit indicating a read. The slave responds with an acknowledge and the previ-
ously addressed 8-bit data byte. The master then sends a non-acknowledge (NACK). Finally the master terminates the
transfer with the stop condition [P].
I 2 C Combined Format - Read
S
Slave Address
W A Register Address
A Sr Slave Address R
A
Data
NACK
P
S: Start Condition Slave Address: 7 bit
W: Write = ‘0’ Register Address: 8 bit
R: Read = ‘1’ Data: 8 bit
A: Acknowledge (sent by slave)
NACK: Non-Acknowledge (sent by master)
Sr: Repeated Start Condition
P: Stop condition
? 2005 Semtech Corp.
14
www.semtech.com
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SC900CT | 功能描述:插线板 DIRECT BOX, CUSTOM 48V PHANTOM LIFT RoHS:否 制造商:Switchcraft 产品类型:Bantam (TT) 正规化: 高度/机架数量: 深度: 端接类型: 位置/触点数量:48 |
| SC900EVB | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Programmable Penta ULDO with RESET and I2C Interface |
| SC900IMLTRT | 制造商:SEMTECH 制造商全称:Semtech Corporation 功能描述:Programmable Penta ULDO with RESET and I2C Interface |
| SC901001DR2 | 制造商:ON Semiconductor 功能描述: |
| SC9012 | 制造商:SILAN 制造商全称:Silan Microelectronics Joint-stock 功能描述:INFRARED REMOTE CONTROL TRANSMITTER |
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