TDA9209 Ver la hoja de datos (PDF) - STMicroelectronics
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TDA9209 Datasheet PDF : 22 Pages
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Figure 7. DC Coupling
TDA 9209
Pins17-19-21
OUTPUT 1,2,3 DC LEVEL
0.5V to 2.5V (8bits)
Figure 8. DC Coupling with Feedback (LCD mode)
TDA9209
CRT
Driver
CRT
TDA 9209
CUT-OFF 1,2,3 DC LEVEL
0.5V to 2.5V (8bits)
Pins 17-19-21
Pins 15-16-22
CRT
Driver
CRT
4.12 Stand-by Mode
The TDA9209 has a stand-by mode. As soon as
the VCC power (Pin 20) gets lower than 3V (typ.),
the device is set in stand-by mode whatever the
voltage on analog VCCA (Pin 7) is. The analog
blocks are internally switched-off while the logic
parts (I2C bus, power-on reset) are still supplied.
In stand-by mode, the power consumption is be-
low 20 mW.
4.13 Serial Interface
The 2-wire serial interface is an I2C interface. The
slave address of TDA9209 is DC hex.
A6 A5 A4 A3 A2 A1 A0 W
1
1
0
1
1
1
0
0
The host MCU can write into the TDA9209 regis-
ters. Read mode is not available.
In order to write data into the TDA9209, after the
“start” message, the MCU must send the following
data (see Figure 9):
– the I2C address slave byte with a low level for the
R/W bit,
– the byte to the internal register address where
the MCU wants to write data,
– the data.
All bytes are sent with MSB bit first. The transfer of
written data is ended with a “stop” message.
When transmitting several data, the register ad-
dresses and data can be written with no need to
repeat the start and slave addresses.
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