MK21DN512VMC5 Freescale Semiconductor, MK21DN512VMC5 Datasheet - Page 28

• Manufacturer Part Number: MK21DN512VMC5
• Description: ARM Microcontrollers - MCU ARM+512Kb+USB+DryIce
• Manufacturer: Freescale Semiconductor

Specifications of MK21DN512VMC5

• Core: ARM Cortex M4
• Processor Series: MK21DN512
• Data Bus Width: 16 bit/32 bit
• Maximum Clock Frequency: 50 MHz
• Program Memory Size: 512 KB
• Data Ram Size: 64 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: MAPBGA-121
• Mounting Style: SMD/SMT
• A/d Bit Size: 16 bit
• Interface Type: Serial
• Length: 8 mm
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Timers: 2
• On-chip Dac: Yes
• Program Memory Type: Flash
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 1.71 V

Peripheral operating requirements and behaviors
6.3.2.2 Oscillator frequency specifications
1. Other frequency limits may apply when external clock is being used as a reference for the FLL or PLL.
2. When transitioning from FBE to FEI mode, restrict the frequency of the input clock so that, when it is divided by FRDIV, it
3. Proper PC board layout procedures must be followed to achieve specifications.
4. Crystal startup time is defined as the time between the oscillator being enabled and the OSCINIT bit in the MCG_S register
6.3.3 32 kHz Oscillator Electrical Characteristics
This section describes the module electrical characteristics.
6.3.3.1 32 kHz oscillator DC electrical specifications
1. When a crystal is being used with the 32 kHz oscillator, the EXTAL32 and XTAL32 pins should only be connected to
28
Symbol
f
f
f
t
osc_hi_1
osc_hi_2
ec_extal
dc_extal
f
remains within the limits of the DCO input clock frequency.
being set.
required oscillator components and must not be connected to any other devices.
osc_lo
t
cst
Symbol
C
V
V
R
BAT
para
pp
F
Oscillator crystal or resonator frequency — low
frequency mode (MCG_C2[RANGE]=00)
Oscillator crystal or resonator frequency — high
frequency mode (low range)
(MCG_C2[RANGE]=01)
Oscillator crystal or resonator frequency — high
frequency mode (high range)
(MCG_C2[RANGE]=1x)
Input clock frequency (external clock mode)
Input clock duty cycle (external clock mode)
Crystal startup time — 32 kHz low-frequency,
low-power mode (HGO=0)
Crystal startup time — 32 kHz low-frequency,
high-gain mode (HGO=1)
Crystal startup time — 8 MHz high-frequency
(MCG_C2[RANGE]=01), low-power mode
(HGO=0)
Crystal startup time — 8 MHz high-frequency
(MCG_C2[RANGE]=01), high-gain mode
(HGO=1)
Description
1
Table 17. 32kHz oscillator DC electrical specifications
Supply voltage
Internal feedback resistor
Parasitical capacitance of EXTAL32 and XTAL32
Peak-to-peak amplitude of oscillation
Description
K21 Sub-Family Data Sheet Data Sheet, Rev. 3, 08/2012.
Table 16. Oscillator frequency specifications
Min.
32
40
—
—
—
—
—
3
8
1.71
Typ.
750
250
Min.
0.6
50
—
—
—
—
—
—
—
1
Max.
Typ.
100
0.6
40
32
50
60
—
—
—
—
—
8
5
Freescale Semiconductor, Inc.
MHz
MHz
MHz
Max.
Unit
kHz
3.6
ms
ms
ms
ms
—
—
%
7
Notes
Unit
1,
3,
MΩ
pF
V
V
2
4