topic Re: MPXY 8600 in 8-bit Microcontrollers

MPXY 8600

riccardocescato — Tue, 23 Sep 2014 13:28:07 GMT

Hi,

I need a clarification about the functional modes of the MPXY8600 sensor.

The datasheet says:

-"The Stop2 mode found in other Freescale S08 family members is not available; but the Stop3 mode is also present like other members of

the Freescale S08 family members." -

But there is no specification about how to set it.

In the SPMSC2 register I can write only the PDC bit while the PPDC, that was present in the mpxy8300 family, is reserved.

So, how can I set the Stop 3 Mode?

Can I equally write this last bit of the SPMSC2 register to obtain a Stop 3 Mode?

Thanks,

Riccardo

ZhangJennie — Thu, 25 Sep 2014 02:29:13 GMT

hello Riccardo,

here is stop3 sample code i ever made for HCS08 JM60. you could refer it to your project,

===============================================

this answer is for you. if it helps, please click on "correct answer" button. thanks!

Best Regards,

ZhangJun

riccardocescato — Tue, 07 Oct 2014 11:04:26 GMT

Hi Zhang,

I read your project but I can't understand where you set the Stop Mode.

In the main.c you set only the KBI and the Timer.

I can't see any setting for the register SPMSC2 so I can't understand how it is possible that the JM60 can go in Stop 3 Mode.

Can you explain me briefly?

Thanks,

Riccardo

ZhangJennie — Wed, 08 Oct 2014 09:32:32 GMT

hello Riccardo,

SPMSC2: PPDC bit is to control whether stop2 or stop3 selected.

0 Stop3 mode enabled.

1 Stop2, partial power down, mode enabled.

the default value of PPDC is 0, so the default stop mode is stop3. that's the reason I didn't set SPMSC2: PPDC in sample code.

when execute __asm STOP , program goes into stop3 mode.

The code have two interrupt: timer and KBI

- when code is running, it is in stop3 mode, timer can not work

- when KBI happens(KBI #0), it wake up stop3

- go on running code, timer can work now.

===============================================

this answer is for you. if it helps, please click on "correct answer" button. thanks!

Best Regards,

ZhangJun