MK30DN512ZVLK10 Freescale Semiconductor, MK30DN512ZVLK10 Datasheet - Page 726

• 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

CMP Functional Description
32.8.1 CMP Functional Modes
There are three main sub-blocks to the comparator module: the comparator itself, the
window function and the filter function. The filter, CR0[FILTER_CNT] can be clocked
from an internally or external clock source. Additionally, the filter is programmable with
respect to how many samples must agree before a change on the output is registered. In
the simplest case, only 1 sample must agree. In this case, the filter acts as a simple
sampler.
The external sample input is enabled using CR1[SE]. When set, the output of the
comparator is sampled only on rising edges of the sample input.
The "windowing mode" is enabled by setting CR1[WE]. When set, the comparator output
is sampled only when the WINDOW input signal is equal to one. This feature can be
used to ignore the comparator output during time periods in which the input voltages are
not valid. This is especially useful when implementing zero-crossing-detection for certain
PWM applications.
The comparator filter and sampling features can be combined as shown in the following
table. Individual modes are discussed below.
726
Mode #
2A
2B
3A
3B
4A
4B
5A
5B
1
CR1[EN]
0
1
1
1
1
1
1
1
1
CR1[WE]
Table 32-29. Comparator Sample/Filter Controls
X
0
0
0
0
0
0
1
1
K30 Sub-Family Reference Manual, Rev. 6, Nov 2011
CR1[SE]
X
0
0
1
0
1
0
0
0
Table continues on the next page...
CR0[FILTER_C
> 0x01
> 0x01
0x00
0x01
0x01
0x00
NT]
X
X
X
FPR[FILT_PER]
> 0x00
> 0x00
0x00
0x00
X
X
X
X
X
Refer to the
Refer to the
Refer to the
Comparator output is sampled on
every rising bus clock edge when
Refer to the
SAMPLE=1 to generate COUTA
Sampled, Non-Filtered mode
Refer to the
Sampled, Filtered mode
Freescale Semiconductor, Inc.
Mode (#s 3A &
Mode (#s 4A &
Continuous Mode
Windowed mode
Operation
Sampled, Non-Filtered
2A &
5A &
Disabled
Continuous Mode (#s
Disabled Mode (#
Windowed Mode (#s
Sampled, Filtered
2B).
5B).
3B).
4B).
1).