LNBH221PD-TR STMicroelectronics, LNBH221PD-TR Datasheet - Page 11

• Manufacturer Part Number: LNBH221PD-TR
• Description: IC CONTROL/LNB SUPP DL 36PWRSOIC
• Manufacturer: STMicroelectronics

Specifications of LNBH221PD-TR

• Applications: Converter, Analog and Digital Satellite STB Receivers/SatTV
• Voltage - Input: 8 ~ 15 V
• Number Of Outputs: 2
• Voltage - Output: 13.3V, 18V
• Operating Temperature: 0°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 36-PowerSOIC
• Output Voltage: 14.75 V
• Output Current: 750 mA
• Input Voltage: - 0.3 V to + 16 V
• Operating Temperature Range: - 40 C to + 125 C
• Mounting Style: SMD/SMT
• Duty Cycle (max): 60 %
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-4271-2

5.4
5.5
5.6
Figure 5.
Byte format
Every byte transferred to the SDA line must contain 8 bits. Each byte must be followed by an
acknowledge bit. The MSB is transferred first.
Acknowledge
The master (micropower) puts a resistive HIGH level on the SDA line during the
acknowledge clock pulse (see
to pull-down (LOW) the SDA line during the acknowledge clock pulse, so that the SDA line is
stable LOW during this clock pulse. The peripheral which has been addressed has to
generate an acknowledge after the reception of each byte, otherwise the SDA line remains
at the HIGH level during the ninth clock pulse time. In this case the master transmitter can
generate the STOP information in order to abort the transfer. The LNBH221 won't generate
the acknowledge if the V
Transmission without acknowledgement
Avoiding to detect the acknowledge of the LNBH221, the micropower can use a simpler
transmission: simply it waits one clock without checking the slave acknowledging, and sends
the new data.
This approach of course is less protected from misworking and decreases the noise
immunity.
Data validity on the I²C bus
CC
supply is below the under voltage lockout threshold (6.7 V typ.).
Figure
Doc ID 9913 Rev 6
7). The peripheral (LNBH221) that acknowledges has
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