参数资料
型号: MAX8738EUA+T
厂商: Maxim Integrated Products
文件页数: 2/13页
文件大小: 0K
描述: IC CALIBR TFT VCOM 8UMAX
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
类型: 视频滤波器
应用: LCD 显示器
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-uMAX
包装: 带卷 (TR)
MAX8738
Applications Information
I2C-Bus-Compatible Interface
The MAX8738 is a receive-only device with an I2C
address of 5Eh. The 2-wire, I2C-bus-compatible serial
interface (pins SCL and SDA) is designed to attach to a
I2C bus. Connect both SCL and SDA lines to the positive
bus supply through individual pullup resistors. Calculate
the required value of the pullup resistors using:
where tR is the rise time in the Electrical Char-
acteristics, and CBUS is the total capacitance on the
bus.
The MAX8738 is compatible with the standard I2C inter-
face protocol as defined in the following subsections.
See Figure 6.
Bus Not Busy
The I2C bus is not busy when both data and clock lines
remain HIGH. Data transfers may be initiated only when
the bus is not busy.
START Data Transfer (S)
Starting from an idle bus state (both SDA and SCL are
high), a START condition consists of a HIGH to LOW
transition of the SDA line while the clock (SCL) is HIGH.
All commands must be preceded by a START condition.
STOP Data Transfer (P)
A STOP condition consists of a LOW to HIGH transition
of the SDA line while the clock (SCL) is HIGH. All oper-
ations must be ended with a STOP condition.
R
t
C
PULLUP
R
BUS
EEPROM-Programmable TFT VCOM
Calibrator with I2C Interface
10
______________________________________________________________________________________
MAX8738
AVDD
RSET
R2
R1
VCOM
SET
GND
AVDD
OUT
MAX8738
EQUIVALENT CIRCUIT
MECHANICAL
POTENTIOMETER
RD
RE
RF
R1 = RD
R2 = RF
RSET =
RD x (RD + RE + RF)
20 x RE
Figure 5. Replacement of Mechanical Potentiometer Circuit
SCL
SDA
START
CONDITION
S
STOP
CONDITION
P
DATA LINE
STABLE
DATA VALID
CHANGE
OF DATA
ALLOWED
Figure 6. I2C Bus START, STOP, and Data Change Conditions
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MAX8739ETP+ 功能描述:LCD 驱动器 TFT LCD DC/DC Converter RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube
MAX8739ETP+T 功能描述:LCD 驱动器 TFT LCD DC/DC Converter RoHS:否 制造商:Maxim Integrated 数位数量:4.5 片段数量:30 最大时钟频率:19 KHz 工作电源电压:3 V to 3.6 V 最大工作温度:+ 85 C 最小工作温度:- 20 C 封装 / 箱体:PDIP-40 封装:Tube
MAX8739ETP-T 功能描述:直流/直流开关转换器 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