HMC6352

www.honeywell.com

9

In Continuous Mode - Send 43(hex) slave address to read data and clock out the register data bytes for heading.

The “A” command is not allowed or required.

Waveform Examples

Example 1: This example shows how to read a single byte from the HMC6352. The Slave (HMC6352) continues to hold

the SDA line low after the acknowledge (ACK) bit because the first bit of the data byte is a zero. Remember that the data

read is last command sensitive.

Example 2: This example shows how to read two bytes from the HMC6352 (slave). The slave continues to hold the SDA

line low after the acknowledge bit because the first bit of the data bytes is zero.

Example 3: This example shows how to command HMC6352 to read a RAM register by sending the “g” command and

the register address 7F(hex). Note that this example does not show the process of reading the answer. See example 1

for reading a byte.

Example 4: This example shows how to write to a RAM register in the HMC6352 by sending the “G” command, the

register address 7F(hex), and the data byte 55(hex) to the HMC6352 slave.

SDA

SCL

M_SDA

S_SDA

SDA

SCL

M_SDA

S_SDA

SDA

SCL

M_SDA

S_SDA

43(hex)

Read From This I2C Address

55(hex)

Data

SDA

SCL

M_SDA

S_SDA

SDA

SCL

M_SDA

S_SDA

SDA

SCL

M_SDA

S_SDA

43(hex)

Read From This I2C Address

55(hex)

Data

00(hex)

Data

SDA

SCL

M_SDA

S_SDA

SDA

SCL

M_SDA

S_SDA

SDA

SCL

M_SDA

S_SDA

42(hex)

Write to This I2C Address

“g”

Command

7F(hex)

Register 7F

SDA

SCL

M_SDA

S_SDA

SDA

SCL

M_SDA

S_SDA

SDA

SCL

M_SDA

S_SDA

42(hex)

Write to This I2C Address

“G”

Command

7F(hex)

Register 7F

55(hex)

Data