Kinetis MicrocontrollersのトピックRe: Where is Flex Bus on the MK22FX1M0VLL12

Where is Flex Bus on the MK22FX1M0VLL12

brentgreenwald — Mon, 31 Oct 2016 19:18:24 GMT

In the datasheet for the MK22FX1M0VLL12 the flexbus AD pins 21-23 are missing. Is there any reason why they are not included on the master pin out list? Or is there some other approach to wiring the 32 bit flex bus.

Re: Where is Flex Bus on the MK22FX1M0VLL12

Hui_Ma — Tue, 01 Nov 2016 06:36:48 GMT

For the pin resource limitation, the PTB[6~8] were removed from MK22FN1M0VLL12 , which is pin ALT5 function is FB_AD[21:23].

There could not do 32 bit data operation via MK22FN1M0VLL12 Flexbus module.

Customer could select K22 product such as MK22FN1M0VLQ12 or MK22FN1M0VMC12R as a replacement(if customer need to connect external 32-bit port size memory).

Thank you for the attention.

Have a great day,
Ma Hui
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Re: Where is Flex Bus on the MK22FX1M0VLL12

brentgreenwald — Tue, 01 Nov 2016 12:54:20 GMT

But then why dose the chip say it supports 32 bit?

Re: Where is Flex Bus on the MK22FX1M0VLL12

Hui_Ma — Wed, 02 Nov 2016 05:17:46 GMT

Thank you for the info. The MK22FN1M0VLL12 reference manual should be updated about related Flexbus module.

I will forward related info to Kinetis product team about this document issue.

Sorry for that may bring any inconvenience to you.