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
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.