Datasheet
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
EXTAL XTAL
OSCILLATOR
EXTAL XTAL
OSCILLATOR
EXTAL XTAL
OSCILLATOR
EXTAL XTAL
OSCILLATOR
EXTAL XTAL
OSCILLATOR
EXTAL XTAL
OSCILLATOR
MCU
ADCx
MCU
ADCx
MCU
RESET_b
MCU
NMI_b
MCU
RESET_b
Supervisor Chip
OUT
Active high,
open drain
RESET_b
SWD_DIO
SWD_CLK
Analog input
High voltage input
RESET_b
VDD
VDD
VDD
VDD
VDD
VDD
Drawing Title:
Size Document Number Rev
Date: Sheet
of
Page Title:
ICAP Classification: FCP: FIUO: PUBI:
SCH-XXXXX PDF: SPF-XXXXX X
<Title>
C
Friday, February 06, 2015
<PageTitle>
1 1
___ ___
X
Drawing Title:
Size Document Number Rev
Date: Sheet
of
Page Title:
ICAP Classification: FCP: FIUO: PUBI:
SCH-XXXXX PDF: SPF-XXXXX X
<Title>
C
Friday, February 06, 2015
<PageTitle>
1 1
___ ___
X
Drawing Title:
Size Document Number Rev
Date: Sheet
of
Page Title:
ICAP Classification: FCP: FIUO: PUBI:
SCH-XXXXX PDF: SPF-XXXXX X
<Title>
C
Friday, February 06, 2015
<PageTitle>
1 1
___ ___
X
R
1 2
0.1uF
12
R5
1 2
Cx
12
0.1uF
12
RESONATOR
1 3
2
Cy
12
Cx
12
CRYSTAL
21
J1
HDR_5X2
1 2
3 4
65
7 8
9 10
Cy
12
10k
12
10k
12
R4
12
CRYSTAL
21
0.1uF
12
10k
12
CRYSTAL
21
R1
1 2
R3
1 2
C
12
RESONATOR
1 3
2
R2
1 2
10k
12
10k
12
RF
1 2
RS
12
BAT54SW
1 2
3
RS
12
RS
12
C
12
RF
1 2
RS
1 2
RF
1 2
CRYSTAL
21
Figure 50. SWD debug interface
• Low leakage stop mode wakeup
Select low leakage wakeup pins (LLWU_Px) to wake the MCU from one of the
low leakage stop modes (LLS/VLLSx). See for pin selection.
• Unused pin
Unused GPIO pins must be left floating (no electrical connections) with the MUX
field of the pin’s PORTx_PCRn register equal to 0:0:0. This disables the digital
input path to the MCU.
If the USB module is not used, leave the USB data pins (USB0_DP, USB0_DM)
floating. Connect USB_VDD to ground through a 10 kΩ resistor if the USB module
is not used.
6.1.5
Crystal oscillator
When using an external crystal or ceramic resonator as the frequency reference for the
MCU clock system, refer to the following table and diagrams.
The feedback resistor, RF, is incorporated internally with the low power oscillators. An
external feedback is required when using high gain (HGO=1) mode.
Internal load capacitors (Cx, Cy) are provided in the low frequency (32.786kHz) mode.
Use the SCxP bits in the OSC0_CR register to adjust the load capacitance for the
crystal. Typically, values of 10pf to 16pF are sufficient for 32.768kHz crystals that have
a 12.5pF CL specification. The internal load capacitor selection must not be used for
high frequency crystals and resonators.
Design considerations
128
Kinetis KL82 Microcontroller, Rev. 3, 08/2016
NXP Semiconductors