参数资料
型号: ST72T734J6B1
厂商: 意法半导体
元件分类: ADC
英文描述: 8-BIT USB MCU FOR MONITORS, WITH UP TO 60K OTP, 1K RAM, ADC, TIMER, SYNC, TMU, PWM/BRM, H/W DDC & I2C
中文描述: 8位USB单片机的显示器,高达60K章检察官办公室,每1000内存,模数转换器,定时器,同步,材质单元,脉宽调制/的BRM,的H / W DDC的
文件页数: 142/144页
文件大小: 1280K
代理商: ST72T734J6B1
ST72774/ST727754/ST72734
97/144
DDC INTERFACE (Cont’d)
4.8.3 Signal Description
Serial Data (SDA)
The SDA bidirectional pin is used to transfer data
in and out of the device. It is an open-drain output
that may be or-wired with other open-drain or
open-collector pins. An external pull-up resistor
must be connected to the SDA line. Its value
depends on the load of the line and the transfer
rate.
Serial Clock (SCL)
The SCL input pin is used to synchronize all data in
and out of the device when in I2C bidirectional
mode. An external pull-up resistor must be
connected to the SCL line. Its value depends on
the load of the line and the transfer rate.
Note:When the DDC1/2B and DDC/CI-Factory Interfaces
are disabled (HWPE bit=0 in the DCR register and
PE bit=0 in the CR register), SDA and SCL pins re-
vert to standard I/O pins.
Transmit-only Clock (Vsync/Vsync2)
The Vsync input pins are used to synchronize all
data in and out of the device when in Transmit-only
mode.
These pins are ONLY used by the DDC1/2B
interface (when in DDC1 mode).
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