- 您现在的位置：买卖IC网 > Sheet目录341 > MAX7307AUB+T (Maxim Integrated)IC LED DRIVER LINEAR 10-UMAX
SMBus/I 2 C Interfaced 4-Port, Level-Translating
GPIOs and LED Drivers
WRITE TO OUTPUT PORTS REGISTERS
(P4)
SCL
1
2
3
4
5
6
7
8
9
SLAVE ADDRESS
REGISTER ADDRESS
SDA
S
1
0
0
1
1
A1
A0
0
A
0
0
0
0
0
1
0
0
A
MSB
DATA
LSB
A A
P
START CONDITION
R/W
ACKNOWLEDGE FROM SLAVE
ACKNOWLEDGE FROM SLAVE
STOP
ACKNOWLEDGE
P4–P1
Figure 14. Write to Output Port Registers
READ FROM INPUT PORTS REGISTERS
t PPV
DATA VALID
SCL
1
2
3
4
5
6
7
8
9
SDA
S
1
0
0
1
1
A1
A0
1
A
MSB
DATA1
LSB
A
MSB
DATA4
LSB
NA
P
START CONDITION
R/W
ACKNOWLEDGE FROM SLAVE
ACKNOWLEDGE FROM MASTE R
STOP
NO ACKNOWLEDGE
P4–P1
DATA1
DATA2
DATA3
DATA4
Figure 15. Read from Input Port Registers
INTERRUPT VALID/RESET
t PH
t PSU
SCL
1
2
3
4
5
6
7
8
9
SDA
S
1
0
0
1
1
1
A0
1
A
MSB
DATA2
LSB
A
MSB
DATA3
LSB
NA
P
START CONDITION
R/W
ACKNOWLEDGE FROM SLAVE
ACKNOWLEDGE FROM MASTER
STOP
NO ACKNOWLEDGE
P4–P1
DATA1
DATA2
DATA3
INT
t IV
t IR
t IV
t IR
Figure 16. Interrupt and Reset Timing
same rules as for a write. Thus, a read is initiated by first
configuring the MAX7306/MAX7307’s command byte
by performing a write (Figure 13). The master can now
read n consecutive bytes from the MAX7306/
MAX7307 with the first data byte being read from the
register addressed by the initialized command byte
(Figure 15). When performing read-after-write verifica-
tion, remember to reset the command byte’s address
because the stored command byte address has been
autoincremented after the write (see Table 1).
Operation with Multiple Masters
If the MAX7306/MAX7307 are operated on a 2-wire
interface with multiple masters, a master reading the
MAX7306/MAX7307 should use a repeated start
between the write that sets the MAX7306/MAX7307’s
address pointer, and the read(s) that takes the data
from the location(s). This is because it is possible for
master 2 to take over the bus after master 1 has set up
the MAX7306/MAX7307’s address pointer, but before
master 1 has read the data. If master 2 subsequently
changes the MAX7306/MAX7307 ’s address pointer,
then master 1’s delayed read can be from an unexpect-
ed location.
Bus Timeout
Clear device configuration register 0x27 bit D7 to
enable the bus timeout function (see Table 2), or set it
to disable the bus timeout function. Enabling the time-
out feature resets the MAX7306/MAX7307 serial-bus
interface when SCL stops either high or low during a
read or write. If either SCL or SDA is low for more than
20
______________________________________________________________________________________
发布紧急采购，3分钟左右您将得到回复。
相关PDF资料
MAX831EVKIT-SO
EVAL KIT FOR MAX831
MAX8513EVKIT
EVAL KIT FOR MAX8513
MAX8552EUB+
IC DRIVER MOSFET HS 10-UMAX
MAX8595XETA+T
IC LED DRIVR WHITE BCKLGT 8-TDFN
MAX8607ETD+T
IC LED DRIVR PHOTO FLASH 14-TDFN
MAX8608YETD+T
IC LED DRVR WT/OLED BCKLT 14TDFN
MAX8631XETI+T
IC LED DRVR WHITE BCKLGT 28-TQFN
MAX8645YETI+T
IC LED DRVR WHITE BCKLGT 28-TQFN
相关代理商/技术参数
MAX7307EVKIT+
制造商:Maxim Integrated Products 功能描述:MAX7307 EVAL KIT/EVAL SYS - Rail/Tube
MAX730A
制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:5V, Step-Down, Current-Mode PWM DC-DC Converters
MAX730AC/D
功能描述:直流/直流开关转换器 DICE SALES DICE RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX730AC/D DIE
制造商:Maxim Integrated Products 功能描述:
MAX730ACPA
功能描述:直流/直流开关转换器 5V Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX730ACPA+
功能描述:直流/直流开关转换器 5V Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX730ACSA
功能描述:直流/直流开关转换器 5V Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT
MAX730ACSA+
功能描述:直流/直流开关转换器 5V Step-Down DC/DC Converter RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT