Sensors中的主题 Re: MMA51XX

MMA51XX

Jhonemagee — Tue, 03 Feb 2026 21:28:11 GMT

Can this sensor be connected directly to the psi5 port of the ecu

Re: MMA51XX

JozefKozon — Tue, 30 Jan 2024 08:51:53 GMT

Dear Jhonemagee,

if your ECU has the PSI5 1.3 version, then yes.

JozefKozon_0-1706604647383.pngJozefKozon_1-1706604679830.png

Alternatively you can use our SEN-PSI5-ADAPTER.

https://www.nxp.com/docs/en/user-guide/UM11524.pdf

With Best Regards,

Jozef

Re: MMA51XX

Jhonemagee — Wed, 31 Jan 2024 01:20:08 GMT

Dear JozefKozon,

We ECU has the PSI5 1.3 version. I wonder if this sensor can directly implement synchronous parallel mode without PHY. Just like the picture says

微信图片_20240131084618.jpg

Re: MMA51XX

Jhonemagee — Wed, 31 Jan 2024 01:29:06 GMT

Dear JozefKozon,

Is the No. 3 pin IDATA of the chip output a current signal or a voltage signal?

Re: MMA51XX

JozefKozon — Fri, 02 Feb 2024 05:20:42 GMT

Dear Jhonemagee,

the recommended connection for the MMA51xx sensors is daisy chain as in the Figure 25. in the MMA51xxKW datasheet. It is similar to your bus configuration with added discrete components. The recommended external components are in the Table below the Figure 1.

JozefKozon_4-1706680777068.png

Screenshot_1.png

JozefKozon_3-1706680488513.png

Please also refer to this document, where an application example for PSI5-P10P-500/3L compatible sensors is described.

JozefKozon_2-1706680456729.png

With Best Regards,

Jozef

Re: MMA51XX

Jhonemagee — Fri, 02 Feb 2024 01:18:48 GMT

Dear JozefKozon,

Is the No. 3 pin IDATA of the sensor output a current signal or a voltage signal?

Re: MMA51XX

JozefKozon — Fri, 02 Feb 2024 06:23:39 GMT

Dear Jhonemagee,

please refer to the section 4.2.1.2 in the MMA51xxKW datasheet. The IDATA pin sources current. So it is a current pin.

JozefKozon_2-1706854937915.png

JozefKozon_3-1706854985461.png

With Best Regards,

Jozef