MK30DN512ZVLK10 Freescale Semiconductor, MK30DN512ZVLK10 Datasheet - Page 845

• Manufacturer Part Number: MK30DN512ZVLK10
• Description: ARM Microcontrollers - MCU KINETIS 512K SLCD
• Manufacturer: Freescale Semiconductor

Specifications of MK30DN512ZVLK10

• Core: ARM Cortex M4
• Processor Series: K30
• Data Bus Width: 32 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 512 KB
• Data Ram Size: 128 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 1.71 V to 3.6 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-80
• Mounting Style: SMD/SMT

36.4.3.1 Up Counting
Up counting is selected when (QUADEN = 0) and (CPWMS = 0).
CNTIN defines the starting value of the count and MOD defines the final value of the
count (see the following figure). The value of CNTIN is loaded into the FTM counter,
and the counter increments until the value of MOD is reached, at which point the counter
is reloaded with the value of CNTIN.
The FTM period when using up counting is (MOD – CNTIN + 0x0001) × period of the
FTM counter clock.
The TOF bit is set when the FTM counter changes from MOD to CNTIN.
If (CNTIN = 0x0000), the FTM counting is equivalent to TPM up counting (that is, up
and unsigned counting) (see the following figure). If (CNTIN[15] = 1), then the initial
value of the FTM counter is a negative number in two's complement, so the FTM
counting is up and signed. Conversely if (CNTIN[15] = 0 and CNTIN ≠ 0x0000), then
the initial value of the FTM counter is a positive number, so the FTM counting is up and
unsigned.
Freescale Semiconductor, Inc.
FTM counter (in decimal values)
FTM counting is up.
CNTIN = 0xFFFC (in two's complement is equal to -4)
MOD = 0x0004
period of FTM counter clock
Figure 36-168. Example of FTM Up and Signed Counting
period of counting = (MOD - CNTIN + 0x0001) x period of FTM counter clock
TOF bit
K30 Sub-Family Reference Manual, Rev. 6, Nov 2011
set TOF bit
4
-4 -3 -2 -1
0
1
2
3
set TOF bit
4
-4 -3 -2 -1
0
1
2
Chapter 36 FlexTimer (FTM)
3 4
set TOF bit
-4 -3
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