HP206C Datasheet, PDF (9/17 Pages) List of Unclassifed Manufacturers – PRECISION BAROMETER AND ALTIMETER SENSOR

DataSheet
HP206C
5.2 I²C Device and Register Address
The I²C device address is shown below. The LSB of the device address is corresponding to address 0XEC (write)
and 0XED (read).
A7 A6 A5 A4 A3 A2 A1
W/R
1
1
1
0
1
1
0
0/1
5.3 I²C Protocol
The 1st TYPE: the host issuing a single byte command to the device
The host shall issue the Device Address (ID) followed by a Write Bit before sending a Command byte. The
device will reply an ACK after it received a correct SOFT_RST command.
111011000000001100
S
Device Address
WA
Command
AP
The 2nd TYPE: the host writing a register inside the device
The host shall issue the Device Address (ID) followed by a Write Bit before sending a command byte and a
data byte. This format only applies while the user wants to send the WRITE_REG command.
1 1 1 0 1 1 00 0 1 1 0 0 1 0 1 0 0 0 0 0 0 0 1 1 0 0
S
Device Address W A
Command
A
Data
AP
The 3rd TYPE: the host reading a register from the device
In this activity there are two frames that are sent separately. The first frame is to send the READ_REG
command which contains a 2-bit binary number of 10 followed by a 6-bit register address. The format of
the first frame is identical to the 1^st type activity. In the second frame, the device will send back the
register data after receiving the correct device address followed by a read bit. This format only applies
while the user wants to use the READ_REG command.
1 1 1 0 1 1 0 0 0 1 0 00011 0 0
S
Device Address W A Command
AP
111011 010100101101
S
Device Address
RA
Data
NP
The 4th TYPE: the host reading the 3-byte or 6-byte ADC data from the device
In this activity there are two frames that are sent separately. The first frame is identical to sending a
single command, which can be one of the conversion result reading commands. In the second frame,
the device will send back the ADC data (either 3 bytes or 6 bytes depending on the commands) after
receiving the
1 1 1 0 1 1 00 0 0 0 0 0 0 1 1 0 0
S
Device Address
WA
Command
AP
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