MK30DN512ZVLK10 Freescale Semiconductor, MK30DN512ZVLK10 Datasheet - Page 844

• 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

Functional Description
The fixed frequency clock is an alternative clock source for the FTM counter that allows
the selection of a clock other than the system clock or an external clock. This clock input
is defined by chip integration. Refer the chip specific documentation for further
information. Due to FTM hardware implementation limitations, the frequency of the
fixed frequency clock must not exceed 1/2 of the system clock frequency.
The external clock passes through a synchronizer clocked by the system clock to assure
that counter transitions are properly aligned to system clock transitions.Therefore, to
meet Nyquist criteria considering also jitter, the frequency of the external clock source
must not exceed 1/4 of the system clock frequency.
36.4.2 Prescaler
The selected counter clock source passes through a prescaler that is a 7-bit counter. The
value of the prescaler is selected by the PS[2:0] bits. The following figure shows an
example of the prescaler counter and FTM counter.
36.4.3 Counter
The FTM has a 16-bit counter that is used by the channels either for input or output
modes. The FTM counter clock is the selected clock divided by the prescaler.
The FTM counter has these modes of operation:
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• up counting (see
• up-down counting (see
• quadrature mode (see
selected input clock
FTM counting is up.
PS[2:0] = 001
CNTIN = 0x0000
MOD = 0x0003
prescaler counter
FTM counter
Figure 36-167. Example of the Prescaler Counter
Up
K30 Sub-Family Reference Manual, Rev. 6, Nov 2011
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