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参数资料
| 型号： | MAX7302ATE+ |
| 厂商： | Maxim Integrated |
| 文件页数： | 23/30页 |
| 文件大小： | 0K |
| 描述： | IC LED DRIVER LINEAR 16-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 100 |
| 拓扑： | 开路漏极，PWM |
| 输出数： | 9 |
| 内部驱动器： | 是 |
| 类型 - 主要： | 背光，LED 闪烁器 |
| 类型 - 次要： | 白色 LED |
| 频率： | 1MHz |
| 电源电压： | 1.62 V ~ 3.6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-WFQFN 裸露焊盘 |
| 供应商设备封装： | 16-TQFN（3x3） |
| 包装： | 管件 |
| 工作温度： | -40°C ~ 125°C |
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SMBus/I 2 C Interfaced 9-Port,
Level-Translating GPIO and LED Driver with CLA
Acknowledge
The acknowledge bit is a clocked 9th bit that the recipi-
ent uses to handshake receipt of each byte of data (see
Figure 13). Thus, each effectively transferred byte
requires 9 bits. The master generates the 9th clock
pulse, and the recipient pulls down SDA during the
acknowledge clock pulse, such that the SDA line is sta-
ble low during the high period of the clock pulse. When
the master is transmitting to the MAX7302, the MAX7302
generates the acknowledge bit because the MAX7302
is the recipient. When the MAX7302 is transmitting to the
master, the master generates the acknowledge bit
because the master is the recipient.
The Slave Address
The MAX7302 has a 7-bit long slave address (Figure
14). The 8th bit following the 7-bit slave address is the
R/ W bit. Set R/ W bit low for a write command and high
for a read command.
The first 5 bits of the MAX7302 slave address (A6–A2)
are always 1, 0, 0, 1, and 1. Slave address bit A1, A0 is
selected by the address input AD0. AD0 can be con-
nected to GND, V DD , SDA, or SCL. The MAX7302 has
four possible slave addresses (see Table 5), and there-
fore, a maximum of four MAX7302 devices can be con-
trolled independently from the same interface.
Message Format for Writing to the MAX7302
A write to the MAX7302 comprises the transmission of the
MAX7302’s slave address with the R/ W bit set to zero, fol-
lowed by at least 1 byte of information (see Figure 16).
The first byte of information is the command byte. The
command byte determines which register of the
MAX7302 is to be written to by the next byte, if received.
If a STOP condition is detected after the command byte is
received, the MAX7302 takes no further action beyond
storing the command byte (see Figure 15).
Any bytes received after the command byte are data
bytes. The first data byte goes into the internal register of
the MAX7302 selected by the command byte (see Figure
16). If multiple data bytes are transmitted before a STOP
condition is detected, these bytes are generally stored in
subsequent MAX7302 internal registers because the
command byte address autoincrements (see Table 3).
Message Format for Reading
The MAX7302 is read using the MAX7302’s internally
stored command byte as an address pointer the same
way the stored command byte is used as an address
pointer for a write. The pointer autoincrements after
each data byte is read using the same rules as for a
write. Thus, a read is initiated by first configuring the
MAX7302 ’s command byte by performing a write
(Figure 15). The master can now read n consecutive
START
CONDITION
CLOCK PULSE
FOR ACKNOWLEDGE
bytes from the MAX7302 with the first data byte being
read from the register addressed by the initialized com-
mand byte (see Figure 17). When performing read-
SCL
1
2
8
9
after-write verification, remember to reset the command
SDA BY
TRANSMITTER
SDA BY
RECEIVER
S
byte ’s address because the stored command byte
address has been autoincremented after the write.
Figure 13. Acknowledge
SDA
1
0
0
1
1
A1
A0
R/W
ACK
MSB
SCL
Figure 14. Slave Address
LSB
D15
D14
D13
D12
D11
D10
D9
D8
ACKNOWLEDGE FROM MAX7302
S
SLAVE ADDRESS
0
A
REGISTER ADDRESS
A
P
Figure 15. Register Address Received
R/W
ACKNOWLEDGE FROM MAX7302
______________________________________________________________________________________
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相关代理商/技术参数 |
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| MAX7302ATE/GH9 | 制造商:Maxim Integrated Products 功能描述:LEVEL-TRANSLATING GPIO AND LED DRIVER WITH CLA - Rail/Tube |
| MAX7302ATE+ | 功能描述:外围驱动器与原件 - PCI 9-Port Level-Trans GPIO & LED Driver RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX7302ATE+T | 功能描述:外围驱动器与原件 - PCI 9-Port Level-Trans GPIO & LED Driver RoHS:否 制造商:PLX Technology 工作电源电压: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:FCBGA-1156 封装:Tray |
| MAX7302EVKIT+ | 制造商:Maxim Integrated Products 功能描述:MAX7302 EVAL KIT - Boxed Product (Development Kits) |
| MAX7304 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:I2C-Interfaced 16-Port, Level-Translating GPIO and LED Driver with High Level of Integrated |
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