mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 901

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

The following figure shows an example when the channel (n) is in output compare mode
and the channel (n) output is toggled when there is a match. In the output compare mode,
the channel output is not updated to its initial value when there is a write to CNTH or
CNTL registers (item 3). In this case, it is recommended to use the initialization
(Initialization) to update the channel output to the selected value (item 4).
Freescale Semiconductor, Inc.
Figure 37-223. FTM Behavior After the Reset When the Channel (n) Is in Combine Mode
Note
Note
channel (n) output
channel (n) output
– CNTINH:L = 0x0010
– Channel (n) is in low-true combine mode with CNTINH:L < C(n)VH:L < C(n+1)VH:L < MODH:L
– C(n)VH:L = 0x0015
– CNTINH:L = 0x0010
– Channel (n) is in output compare and the channel (n) output is toggled when there is a match
– C(n)VH:L = 0x0014
Figure 37-224. FTM Behavior After the Reset When the Channel (n) Is in Output
FTM counter
FTM counter
CLKS[1:0]
CLKS[1:0]
(1) FTM reset
(1) FTM reset
XXXX
XXXX
XX
XX
(2) FTM configuration
CNTH or CNTL registers
CNTH or CNTL registers
(2) FTM configuration
(3) write any value to
MCF51JF128 Reference Manual, Rev. 2, 03/2011
(3) write any value to
0x0000
0x0000
0b00
0b00
Compare Mode
Preliminary
0x0010
(4) write 0b01 to CLKS[1:0]
0x0010
(4) use of initialization to update
the channel output to the zero
(5) write 0b01 to CLKS[1:0]
0x0011
channel (n) pin is controlled by FTM
0x0011
0x0012
channel (n) pin is controlled by FTM
0b01
0x0012
0x0013
0b01
0x0013
0x0014
0x0014
0x0015
Chapter 37 FlexTimer (FTM)
0x0016
0x0015
0x0017
0x0016
0x0018
0x0017
901
. . .
. . .