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HCM-5534-90-1201/1302 (CM3626)

The HCM-5534-90-1201 (CM3626) is a controller for vehicle and other applications with a steady voltage less than or equal to 32VDC. It has 36 inputs and 26 outputs as well as two CAN/J1939 communication ports. The CM3626 is especially suited for applications with higher demands on functional safety, where there is a need to prove the safety integrity of each implemented safety function. All outputs have diagnostics for both internal and external faults and, when used in safe mode, have return switches that provide a redundant shut down path. Two versions of the CM3626 are available: The HCM-5534-90-1201 with 768 kB of flash and the HCM-5534-90-1302 with an additional 2 MB of flash.

Frequently Asked Questions (FAQ)

Q: What is the CM3626's part number?

    A: Four part numbers are available for the CM3626.  The 1201 uses the internal Flash, EEPROM and internal RAM. The 1302 variant has an external memory, 2 MB flash and 512 KB RAM memory available. The 1601 and 1602 models are similar to the 1201 and 1302 respectively, however they both have a fixed CAN1 baud rate of 500K instead of 250K.

Q: What is the frequency range for the frequency inputs?

    A: All modules have a 10kHz max frequency.  The CM3626 user guide also indicates that there is a minimum 1kHz frequency.

Q: What is the 5V reference output voltage and current rating?

    A: All variants have a selectable 5V or 8V reference output.  The CM2115 is rated for 300mA and the CM3626 is rated for 1A.

Q: One CAN channel is listed as 250K and the other 250K/500K. Does this mean that one channel only supports 250K?

    A: Correct, we have a change in the works for HCM-5534-90-1302 that would allow 500K on CAN1 as well.

Q: The calibration interface isn’t specified, what do they support (CCP/XCP/other)?

    A: XCP-compliant A2L files are generated for use with CANape, VISION, etc.

Q: Many of the PWM outputs have either a 250Hz or 500Hz max frequency, is this correct?

    A: Many do, but not all.  Note: The CM2115 LSOs can PWM at 1500Hz.

Open Load Detection

The High Side Outputs (HSOs) have software controllable open-load detection which requires a diagnostic pulse. This feature injects a small leakage current out of the output to detect the value of load connected. This can make it appear as though the ECU is providing power on the HSOs while the software is not actively driving the output. When enabled, this will check for open loads once per second when an output is in the off state. When disabled, the output will not check for open loads and will therefore not source any additional leakage current. When enabled, all HSOs will check for open loads. Open load detection cannot be enabled or disabled for individual outputs. It is the system designer’s responsibility to ensure that the loads connected to outputs of this type are not adversely affected by the leakage current specified. If they are, the open load detection feature should be disabled.

If you need to disable this feature, you can use the Raptor ‘Set Hardware Option’, configured as shown below:

The open-load detection feature can also be disabled to reduce the amount of output leakage current in the off state, making the output usable with many LED-type loads.

The table below shows the differences between the CM3626 variants.

Module Flash Size RAM Size Fixed CAN1 Baud Rate
HCM-5534-90-1201 768 kB 64 kB 250K
HCM-5534-90-1302 768 kB + 2 MB external 64 kB + 512 kB external 250K
HCM-5534-90-1601 768 kB 64 kB 500K
HCM-5534-90-1602 768 kB + 2 MB external 64 kB + 512 kB external 500K











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