MK30DN512ZVLK10 Freescale Semiconductor, MK30DN512ZVLK10 Datasheet - Page 552

• 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
25.8.1.2 Oscillator Start-Up
The OSC enters start-up state when it is configured to generate clocks (internally the
OSC_EN transitions high) using the internal oscillator circuits by setting the external
reference clock selection bit. In this state, the OSC module is enabled and oscillations are
starting up, but have not yet stabilized. When the oscillation amplitude becomes large
enough to pass through the input buffer, XTL_CLK begins clocking the counter. When
the counter reaches 4096 cycles of XTL_CLK, the oscillator is considered stable and
XTL_CLK is passed to the output clock OSC_CLK_OUT.
25.8.1.3 Oscillator Stable
The OSC enters stable state when it is configured to generate clocks (internally the
OSC_EN transitions high) using the internal oscillator circuits by setting the external
reference clock selection bit and the counter reaches 4096 cycles of XTL_CLK (when
CNT_DONE_4096 is high). In this state, the OSC module is producing a stable output
clock on OSC_CLK_OUT. Its frequency is determined by the external components being
used.
25.8.1.4 External Clock Mode
The OSC enters external clock state when it is enabled and external reference clock
selection bit is cleared. For details regarding external reference clock source in this MCU,
refer to the chip configuration chapter. In this state, the OSC module is set to buffer (with
hysteresis) a clock from EXTAL onto the OSC_CLK_OUT. Its frequency is determined
by the external clock being supplied.
25.8.2 OSC Module Modes
The OSC is a Pierce-type oscillator that supports external crystals or resonators operating
over the frequency ranges shown in
Table
25-5. These modes assume the following
conditions: OSC is enabled to generate clocks (OSC_EN=1), configured to generate
clocks internally (MCG_C2[EREFS] = 1), and some or one of the other peripherals
(MCG, Timer, and so on) is configured to use the oscillator output clock
(OSC_CLK_OUT).
K30 Sub-Family Reference Manual, Rev. 6, Nov 2011
552
Freescale Semiconductor, Inc.