HMC6352 Honeywell, HMC6352 Datasheet
HMC6352
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HMC6352 Summary of contents
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... 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 6.5mm by 6.5mm by 1.5mm LCC package, Honeywell offers a complete, ready to use electronic compass ...
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... Vsupply to GND Vsupply to GND Sleep Mode (Vsupply = 3.0V) Steady State (Vsupply = 3.0V) Steady State (Vsupply = 5.0V) Dynamic Peaks Total applied field HMC6352 Sensitivity starts to degrade. Enable set/reset function to restore sensitivity. No permanent damage and set/reset function restores performance. Ambient Ambient For Lead-Free SMT Reflow Max 240° ...
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... The default (factory) HMC6352 7-bit slave address is 42(hex) for write operations, or 43(hex) for read operations. The HMC6352 Serial Clock (SCL) and Serial Data (SDA) lines do not have internal pull-up resistors, and require resistive pull-ups (Rp) between the master device (usually a host microprocessor) and the HMC6352. Pull-up resistance values of about 10k ohms are recommended with a nominal 3 ...
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... 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. ...
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... The “S” command returns the processor to sleep mode. The three operational modes are defined by two bits in the internal HMC6352 Operation Mode register. If the master device sends the “L” command, the current operational mode control byte in the RAM register is loaded into the internal EEPROM register and becomes the default operational mode on the next power-up ...
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... Exposure of the HMC6352 to magnetic fields above 20 gauss (disturbing field threshold) leads to possible measurement inaccuracy or “stuck” sensor readings until the set/reset function is performed. With the periodic Set/Reset bit set, the set/reset function occurs every few minutes ...
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... The calibration routine collects these readings to correct for hard-iron distortions of the earth’s magnetic field. These hard- iron effects are due to magnetized materials nearby the HMC6352 part that in a fixed position with respect to the end user platform. An example would be the magnetized chassis or engine block of a vehicle in which the compass is mounted onto ...
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... All commands are accepted in the standby mode. Honeywell strongly recommends using this mode during the initial setup stage. Setting up of the HMC6352 operation mode and its slave address are typical set up examples. Although execution of all commands in the Query and Continuous Modes is acceptable, the completion outcome is not guaranteed. ...
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... S_SDA 43(hex) Read From This I2C Address 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. SDA SDA ...
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... PCB PAD DEFINITION (Dimensions in Millimeters) The HMC6352 is a fine pitch LCC package with a 0.80mm pin pitch (spacing), with the pin pads defined as 0.70mm by 0.33mm in size. PCB pads are recommended to be oversized by 0.025mm from each pad for a short dimension oversize of 0.05mm. The interior PCB pad is recommended to be 0.05mm oversized per pin with an exterior oversize of 0.20mm for proper package centering and to permit test probing ...
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... 1.37 SOLDERING GUIDELINES Most LCC packages have no special requirements beyond normal procedures for attaching SMT components to printed circuit boards. The exception to this process is the Honeywell HMC6352 that has a FR4 substrate package with epoxy top encapsulation. www.honeywell.com TOP VIEW TOP VIEW 0.80 ...
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... PCB assembly. REFERENCE DESIGN The schematic diagram in Figure 1 shows the basic HMC6352 application circuit with a minimum of external components. From Figure 1, the host microprocessor ( P) controls the HMC6352 via I clock (SCL) ...
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... The 0.01 F supply decoupling capacitor in this reference can be omitted if another supply filter capacitor is already included in the overall circuit design. If the supply traces extend beyond a couple inches to the HMC6352 advisable to add a local supply decoupling capacitor near the HMC6352 to retain optimum circuit stability. ...
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... ORDERING INFORMATION Ordering Number Product HMC6352 Digital Compass Solution, I2C HMC6352 T/R Tape and Reel with 1k pieces/reel FIND OUT MORE For more information on Honeywell’s Magnetic Sensors visit us online at www.magneticsensors.com or contact us at 800-323-8295 (763-954-2474 internationally). The application circuits herein constitute typical usage and interface of Honeyw ell product. Honeywell does not warranty or assume liability of customer- designed circuits derived from this description or depiction ...