Information

Reset clears the CNT register. Writing any value to COUNT updates the counter with its
initial value, CNTIN.
When BDM is active, the FTM counter is frozen. This is the value that you may read.
Addresses: FTM0_CNT is 4003_8000h base + 4h offset = 4003_8004h
FTM1_CNT is 4003_9000h base + 4h offset = 4003_9004h
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
0
COUNT
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
FTMx_CNT field descriptions
Field Description
31–16
Reserved
This read-only field is reserved and always has the value zero.
15–0
COUNT
Counter Value
35.3.5 Modulo (FTMx_MOD)
The Modulo register contains the modulo value for the FTM counter. After the FTM
counter reaches the modulo value, the overflow flag (TOF) becomes set at the next clock,
and the next value of FTM counter depends on the selected counting method; see
Counter.
Writing to the MOD register latches the value into a buffer. The MOD register is updated
with the value of its write buffer according to Registers updated from write buffers.
If FTMEN = 0, this write coherency mechanism may be manually reset by writing to the
SC register whether BDM is active or not.
Initialize the FTM counter, by writing to CNT, before writing to the MOD register to
avoid confusion about when the first counter overflow will occur.
Addresses: FTM0_MOD is 4003_8000h base + 8h offset = 4003_8008h
FTM1_MOD is 4003_9000h base + 8h offset = 4003_9008h
Bit 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
R
Reserved MOD
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Chapter 35 FlexTimer Module (FTM)
K20 Sub-Family Reference Manual, Rev. 2, Feb 2012
Freescale Semiconductor, Inc. 699