FTM pins

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FTM pins

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Contributor III

Hi, all.

I'm using FRDM-K64F.

I'm trying to make custom board with K64(144pin).

Q1

According to the user manual,

10.3.1 K64 Signal Multiplexing and Pin Assignments

There are some FTM CH pins on the ALT3 column.

Some FTM channels are duplicated like below.

Are these pins correct?

pin60 = FTM1 CH0

pin64 = FTM1 CH0

pin81 = FTM1 CH0

pin61 = FTM1 CH1

pin65 = FTM1 CH1

pin82 = FTM1 CH1

pin62 = FTM2 CH0

pin97 = FTM2 CH1

pin63 = FTM2 CH0

pin98 = FTM2 CH1

Q2

According to the user manual,

10.3.1 K64 Signal Multiplexing and Pin Assignments

On the ALT3 column,  FTM3 CH0, CH1, CH2 and CH3 are not existed.

Which pins can I get FTM3 CH0...3 signal?

Q3

How many FTM channels can I use?

I think 20 channels like below.

Is this correct?

FTM0  8 channels

FTM1  2 channels

FTM2  2 channels

FTM3  8 channels

Best regards,

Kiyoshi

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1 Reply

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Senior Contributor II

Hello Kiyoshi,

Q1

Yes, you can use any of those pins to route the FTM channels. The option to route the same functionality to more than one pin is useful for the PCB design.

Q2

FTM3_CH0:

- PTE5

- PTD0

FTM3_CH1:

- PTE6

- PTD1

FTM3_CH2:

- PTE7

- PTD1

FTM3_CH3:

- PTE8

- PTD3

Q3

You can use 8 FTM channels per instance (4 instances * 8 channels = 32 channels). The channels can work without a pin (such an internal base time) so you can use it even if it is not routed to a pin.

Please let me know if this information is useful or if I can do anything else for you.

Best regards,

Earl.

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