HMC6352-TR datasheet, PDF - EEWORLD Datasheet

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HMC6352-TR: Descriptionmodule compass dgtl 2axis 24plcc; CategoryThe sensor; File Size494KB，14 Pages; ManufacturerHoneywell; Websitehttp://www.ssec.honeywell.com/; Environmental Compliance

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HMC6352-TR Overview

module compass dgtl 2axis 24plcc

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2-Axis Compass with Algorithms

HMC6352

The Honeywell HMC6352 is a fully integrated compass module that

combines 2-axis magneto-resistive sensors with the required analog and

digital support circuits, microprocessor and algorithms for heading

computation. By combining the sensor elements, processing electronics,

and firmware in to a 6.5mm by 6.5mm by 1.5mm LCC package,

Honeywell offers a complete, ready to use electronic compass. This

provides design engineers with the simplest solution to integrate high

volume, cost effective compasses into wireless consumer electronics,

vehicle compassing, and antenna positioning.

Honeywell continues to maintain product excellence and performance by

introducing innovative solid-state magnetic sensor solutions. These are highly reliable, top performance products that are

delivered when promised. Honeywell’s magnetic sensor products provide real solutions you can count on.

FEATURES

Compass with Heading Output

Full Integration of 2-Axis Magnetic

Sensors and Electronics

Compass Algorithms

Small Surface Mount Package

(6.5 x 6.5 x 1.5mm, 24-pin LCC)

Low Voltage Operation (2.7 to 5.2V )

I C 2-Wire Serial Interface

Lead Free Package Construction

Wide Magnetic Field Range (± 2 Oe)

Set/Reset Strap Drive

BENEFITS

A complete compass solution including compass firmware

complete

A chip-scaledigital compass solution with heading angle output in a

package.

For computation of heading, and magnetic calibration for hard-iron.

Small size, easy to assemble and compatible with high speed SMT

assembly

Compatible with battery powered applications

Works as a Slave to Customer’s Master Processor (100kHz).

Complies with Current Environmental Standards (RoHS)

Sensor Can Be Used in Strong Magnetic Field Environments

Stray Magnetic Field Protection and Temperature Compensation

HMC6352

All bus transactions begin with the master device issuing the start sequence followed by the slave address byte. The

address byte contains the slave address; the upper 7 bits (bits7-1), and the Least Significant bit (LSb). The LSb of the

address byte designates if the operation is a read (LSb=1) or a write (LSb=0). At the 9 clock pulse, the recieving slave

device will issue the ACK (or NACK). Following these bus events, the master will send data bytes for a write operation, or

the slave will transmit back data for a read operation. All bus transactions are terminated with the master issuing a stop

sequence.

The following timing diagram shows an example of a master commanding a HMC6352 (slave) into sleep mode by sending

the “S” command. The bottom two traces show which device is pulling the SDA line low.

START

ACK

STOP

SDA

SCL

M_SDA

S_SDA

42(hex)

Write to This I C Address

“S”

Command

I C bus control can be implemented with either hardware logic or in software. Typical hardware designs will release the

SDA and SCL lines as appropriate to allow the slave device to manipulate these lines. In a software implementation, care

must be taken to perform these tasks in code.

Command Protocol

The command protocol defines the content of the data (payload) bytes of I C protocol sent by the master, and the slave

device (HMC6352).

After the master device sends the 7-bit slave address, the 1-bit Read/Write, and gets the 1-bit slave device acknowledge

bit returned; the next one to three sent data bytes are defined as the input command and argument bytes. To conserve

data traffic, all response data (Reads) will be context sensitive to the last command (Write) sent. All write commands shall

have the address byte least significant bit cleared (factory default 42(hex)). These commands then follow with the ASCII

command byte and command specific binary formatted argument bytes in the general form of:

(Command ASCII Byte) (Argument Binary MS Byte) (Argument Binary LS Byte)

The slave (HMC6352) shall provide the acknowledge bits between each data byte per the I C protocol. Response byte

reads are done by sending the address byte (factory default 43(hex)) with the least significant bit set, and then clocking

back one or two response bytes, last command dependant. For example, an “A” command prompts the HMC6352 to

make a sensor measurement and to route all reads for a two byte compass heading or magnetometer data response.

Then all successive reads shall clock out two response bytes after sending the slave address byte. Table 1 shows the

HMC6352 command and response data flow.

www.honeywell.com

HMC6352-TR Related Products

	HMC6352-TR	HMC6352-EVAL	HMC6352-DEMO
Description	module compass dgtl 2axis 24plcc	evaluation board for hmc6352	demonstration board for hmc6352

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