Freescale Semiconductor FRDM-KL82Z User manual

© 2016 Freescale Semiconductor, Inc. All rights reserved.
FRDM-KL82Z User’s Guide
1.Introduction
The Freescale Freedom development platform is a set of
software and hardware tools for evaluation and
development. It is an ideal tool for the rapid prototyping
of microcontroller-based applications.
The FRDM-KL82Z supports the power supply voltage
ranging from 1.71 V to 3.6 V. It features a KL82Z, a
device boasting up to 128 KB Flash and 96 KB SRAM,
and numerous analog and digital peripherals. In addition,
it also offers QSPI interface to expand program memory
and USB FS 2.0 without requiring an external crystal.
The FRDM-KL82Z includes the Freescale open
standard embedded serial and debugging adapter known
as OpenSDA. This circuit offers the user several options
for serial communications, flash programming, and run
control debugging.
The FRDM-KL82Z hardware provides a broad range of
expansion board options. The MCU operates normally
when the board power is 3.3 V or 1.8 V. The on-board
interfaces include an RGB LED, which works only
when VDD is 3.3 V, a 6-axis digital sensor
(FXOS8700CQ, combining a 3D accelerometer and 3D
magnetometer), two Touch Sensing Interface (TSI)
touch pads.
Freescale Semiconductor, Inc.
Document Number: FRDMKL82ZUG
User’s Guide
Rev. 0, 01/2016
Contents
1. Introduction........................................................................1
1.1. Features................................................................... 2
1.2. Getting started......................................................... 4
2. Contents.............................................................................4
3. FRDM-KL82Z hardware description................................. 4
3.1. Power supply .......................................................... 4
3.2. Serial and Debugging Adapter version 2
(OpenSDAv2)....................................................................... 5
3.3. Microcontroller....................................................... 7
3.4. Touch interface..................................................... 10
3.5. I2C Inertial Sensor: 6-axis accelerometer and
magnetometer...................................................................... 10
3.6. RGB LED ............................................................. 11
3.7. Flexio/Camera header........................................... 12
3.8. Analog reference voltage ...................................... 12
3.9. Input/output headers ............................................. 12
4. Jumper table..................................................................... 14
5. Reference Documents...................................................... 16
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Introduction
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There are many software development tool options available to the user. Choices include Kinetis Design
Studio (KDS), IAR Embedded Workbench, and Keil MDK featuring the µVision IDE.
All of these features enable users to rapidly prototype many embedded designs: a powerful
microcontroller built on a very low-power core and SOC platform, easy-access to I/O with a large
ecosystem of compatible hardware, a flexible programming and debugging interface, and a large
ecosystem of software development environments.
1.1. Features
The FRDM-KL82Z hardware is a Freescale Freedom development platform assembled with the
following features:
Board power selected with 3.3 V or 1.8 V MCU operation
MKL82Z128VLK7 MCU (96 MHz, 128 KB Flash, 96 KB SRAM, 80 LQFP package) (U16)
Accelerometer and magnetometer, FXOS8700CQ ( U6 )
1x128 Mbit (16 MB) on-board QuadSPI memory (U11)
Flexible power supply options: USB, coin cell battery, and external source
Two TSI touch pads (E1 and E2)
Reset push button (SW1)
Two mechanical push buttons: NMI and LLWU buttons (SW2, SW3)
RGB LED (D3)
Stand-alone full-speed USB host and device functionality
One interface for camera connection
One RF interface
One Bluetooth interface
The FRDM-KL82Z features two MCUs:
The target MCU is the MKL82Z128VLK7.
The OpenSDA MCU is the MK20DX128VFM5.
Figure 1 shows the primary components and their location on the hardware assemble. Figure 2 shows a
block diagram of the FRDM-KL82Z platform.
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Figure 1. FRDM-KL82Z feature call-outs
Figure 2. FRDM-KL82Z block diagram
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FRDM-KL82Z hardware description
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1.2. Getting started
For step-by-step instructions for getting started with the freedom board, see the FRDM-KL82Z Quick
Start Package. For the Quick Start Package and software lab guides, see the “Jump Start Your Design”
section at nxp.com/FRDM-KL82Z.
2.Contents
The FRDM-KL82Z includes:
FRDM-KL82Z for board assembly
Quick Start Guide
USB A to micro-B cable for debugging interface and power supply
USB A to micro-B cable for MKL82Z128VLK7 USB interface
3.FRDM-KL82Z hardware description
The FRDM-KL82Z is a MCU module featuring MKL82Z128VLK7 and ARM®Cortex®-M0+ based
MCU with 128 KB on-chip flash, 96 KB on-chip SRAM, and USB controllers in an 80 pin LQFP
package. It has a maximum core operating frequency of 96 MHz. It can also operate as a stand-alone
module. An on-board debugging circuit, OpenSDA, provides the SWD debugging interface and power
supply input through a single USB Micro-AB connector. The following sections describe the hardware
in more details.
3.1. Power supply
The FRDM-KL82Z offers a design with multiple power supply options. It can be powered from the
USB connector, coin battery on the board or an off-board supply. The USB and VIN supplies are
regulated on-board using a 3.3 V linear regulator and a 1.8 V linear regulator to produce the main power
supply. The coin battery source is not regulated on-board.
Figure 3 shows the schematic drawing for the power supply inputs and the on-board voltage regulator.
In addition, the regulated power can be supplied to J20 from an external source through P5-9V_VIN by
populating the board with an optional voltage regulator (e.g., a 7805 style regulator) in a TO-220
package, and thus providing a high current supply to external devices. To prevent voltage sag under a
high load, C53, C54, C55, and C56 should be populated with appropriately sized capacitors to match the
selected regulator.
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Figure 3. Power supply schematic
Table 1 provides the operational details and requirements for the power supplies.
Table 1. Tags Power supply requirements
Supply source and location
Valid range
OpenSDA operational?
Regulated on-board?
OpenSDA USB (J5)
5 V
Yes
Yes
KL82Z USB (J11)
5 V
No
Yes
P5V0-9V0_VIN (J20)
4.3 V –9 V
No
Yes
Coin Battery (BT1)
2 V –3.6 V
No
No
The input 5 V could be converted to 3.3 V or 1.8 V output by the on-board regulator, providing the
power selection for KL82Z by J14.
Table 2 lists the detailed information.
Table 2. Power selected for KL82Z
J14 setting
Description
Close 1-2
VDD and VDDIO_E are both 3.3 V.
Close 2-3
VDD is 1.8 V, and VDDIO_E is 3.3 V.
NOTE
The OpenSDA circuit is operational only when a USB cable is connected
and supplying power to J5. However, the protection circuitry is enabled to
allow multiple sources to be powered at once. The 3.3 V or 1.8 V power
supplied to the MCU is routed through a jumper, J15. The jumper shunt
can be removed to allow the measurement of power consumed by the
MCU.
3.2. Serial and Debugging Adapter version 2 (OpenSDAv2)
OpenSDAv2 is a serial and debugging adapter circuit that includes an open-source hardware design, an
open-source bootloader, and debugging interface software. It bridges serial and debugging
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communications between a USB host and an embedded target processor, as shown in Figure 4. The
hardware circuit is based on a Freescale Kinetis MK20DX128VFM5 family MCU with 128 KB of
embedded flash and an integrated USB controller. OpenSDAv2 is preloaded with the CMSIS-DAP
bootloader –an open-source mass storage device (MSD) bootloader, and the CMSIS-DAP interface
firmware (also known as the MBED interface), which provides an MSD flash programming interface, a
virtual serial port interface, and a CMSIS-DAP debugging protocol interface. For more information on
the OpenSDAv2 software, see mbed.org and github.com/mbedmicro/CMSIS-DAP.
Figure 4. OpenSDAv2 high-level block diagram
OpenSDAv2 is managed by a Kinetis K20 MCU built on the ARM Cortex-M4 core. The OpenSDAv2
circuit includes a status LED (D1) and a pushbutton (SW1). The pushbutton asserts the Reset signal to
the KL82 target MCU. It can also be used to place the OpenSDAv2 circuit into bootloader mode. SPI
and GPIO signals provide an interface to either the SWD debugging port or the K20. Additionally,
signal connections are available to implement a UART serial channel. The OpenSDAv2 circuit receives
power when the USB connector J5 is plugged into a USB host.
3.2.1. Debugging interface
Signals with SPI and GPIO capability are used to connect directly to the SWD of the KL82Z. These
signals are also brought out to a standard 10-pin Cortex Debugging connector (J19) as shown in Figure 5.
To isolate the KL82Z MCU from the OpenSDA circuit and use J19 to connect to an off-board MCU, cut
the trace between pin1 and pin2 of J17 at the bottom layer. This disconnects the SWD_CLK pin to the
KL82Z so that it interferes with the communications to an off-board MCU connected to J19. Figure 5
shows SWD connector signals description for KL82Z.
OpenSDAv2
OpenSDA MCU
K20DX128Vxx5
MSD Bootloader
OpenSDAv2
Application
UART TX/RX
GPIO
Serial Terminal
File System
SWD/JTAG
LED PWM
USB Host
IDE GPIO/ADC
SPI, GPIO
USB
Target
Processor
nRESET
UART RX/TX
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Figure 5. SWD debugging connector to KL82Z
3.2.2. Virtual serial port
A serial port connection is available between the OpenSDA MCU and pins PTB16 and PTB17 of the
KL82Z. Several of the default OpenSDA applications provided by NXP, including the MSD Flash
programmer and the P&E Microcomputer debugging application, provide a USB communications
device class (CDC) interface that bridges serial communications between the USB host and this serial
interface.
3.3. Microcontroller
The FRDM-KL82Z is an MCU module featuring the MKL82Z128VLK7, a Kinetis microcontroller with
USB 2.0 full-speed OTG controller in an 80 LQFP package. The KL82 microcontroller family is part of
the Kinetis portfolio of devices built around an ARM Cortex-M0+ core. For comprehensive information
on the MKL82Z128VLK7 device, see the KL82 Family Reference Manual (KL82P121M72SF0RM).
Table 3 lists the KL82Z MCU features.
Table 3. Features of MKL82Z512VLL7
Feature
Description
Performance
Up to 96 MHz ARM Cortex-M0+ based core
Memory and memory
expansion
128 KB program flash memory
96 KB SRAM
32 KB ROM with built-in boot loader
32 B backup register
QSPI to expand program code in external high-speed serial NOR flash memory
Analog modules
One 16-bit SAR ADCs and One 12-bit DACs
Support selectable 16-bit, 13-bit, 11-bit, and 9-bit different output modes, or 16-
bit, 12-bit, 10-bit, and 8-bit single-ended output modes
Selectable voltage reference: external or alternate
Communication
interfaces
USB full-speed 2.0 OTG controller supporting crystal-less recovery
Two 16-bit SPI modules
Three low-power UART modules supporting asynchronous operation in low-power
modes
Two EMVSIM modules supporting EMV L1 compatible interface
Two I2C modules supporting up to 1 Mbit/s
One FlexIO module
Security
128-bit unique identification number per chip
Advanced flash security and access control
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Hardware CRC module
Low-power trusted crypto engine supporting AES128/256,DES, 3DES, SHA256,
RSA and ECC, with hardware DPA
True random number generator
Timers
4-channel periodic interrupt timer
Two low-power timer
One 6-channel general purpose / PWM timers
Two 2-channel general purpose timers
Independent real time clock
Human machine
interface
Low-power hardware touch sensor interface (TSI)
General-purpose input / output
For more information about the MCU, see the Kinetis KL82 Microcontroller Data Sheet
(KL82P121M72SF0) and KL82 Family Reference Manual (KL82P121M72SF0RM).
3.3.1. Clock source
KL82Z starts up to the default reset clock for core/system clock. The software can enable the main
external oscillator (EXTAL/XTAL). Two crystals are provided on-board for clocking the
MKL82Z128VLK7 device:
A 12 MHz crystal as the main oscillator for clocking the MCG module
A 32.768 kHz crystal for clocking the RTC module
Internal resistor capacitor (IRC) oscillators include the following:
48 MHz internal resister capacitor (IRC48M) oscillator
4 MHz internal resister capacitor (4 MHz IRC) oscillator
32 kHz internal resister capacitor (32 kHz IRC) oscillator
Low power oscillator (LPO)
3.3.2. Serial port
The primary serial port interface signals are PTB16 and PTB17. These signals are connected to both the
OpenSDAs.
3.3.3. USB interface
The Kinetis KL82 microcontroller features a dual-role USB controller with on-chip full-speed and low-
speed transceivers. The USB interface on the FRDM-KL82Z is configured as a full-speed USB device.
J11 is the USB connector for this interface, as shown in Figure 6.
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Figure 6. USB connector schematic
3.3.4. Reset
The RESET signal on the KL82Z is connected externally to a pushbutton, SW1, and also to the
OpenSDA circuit. However, disconnect J8 when isolating the OpenSDA MCU from SW1 or doing
power consumption test for KL82Z. Isolating the RESET line allows a more accurate measurement of
the target device’s power consumption in low-power mode. The reset button can be used to force an
external reset event on the target MCU.
3.3.5. Debugging
The sole debugging interface on all Kinetis L series devices is a Serial Wire Debug (SWD) port. The
primary controller of this interface on the FRDM-KL82Z is the on-board OpenSDA circuit. However, a
2x5-pin Cortex Debugging connector, J19, provides access to the SWD signals for the KL82Z MCU.
Table 4 shows SWD connector signals description for KL82Z. Figure 7 shows the SWD connection.
Figure 7. SWD connection
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FRDM-KL82Z hardware description
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Table 4. ARM JTAG/SWD mini connector description
Pin
Function
Connection to KL82Z
1
VTref
VDD_KL82Z
2
SWDIO/TMS
PTA3
3
GND
GND
4
SWDCLK/TCK
PTA0
5
GND
GND
6
SWO/TDO
NC
7
NC
NC
8
TDI
NC
9
NC
NC
10
RESET
RESET_b
3.4. Touch interface
The Touch Sensing Interface (TSI) module of the Kinetis microcontrollers provides capacitive touch-
sensing detection with high sensitivity and enhanced robustness. Each TSI pin implements the capacitive
measurement of an electrode. There are two individual electrodes on board that simulate pushbuttons.
Two pins remap to TSI signals are connected to capacitive electrodes, as shown in Figure 8.
Figure 8. Touch Sensing Interface
3.5. I2C Inertial Sensor: 6-axis accelerometer and magnetometer
FXOS8700CQ is a small, low-power, 3-axis, linear accelerometer and 3-axis, magnetometer combined
into a single package. The device features a selectable I2C or point-to-point SPI serial interface with 14-
bit accelerometer and 16-bit magnetometer ADC resolution along with smart-embedded functions. It is
interfaced through an I2C bus and two GPIO signals, as shown in Figure 9 and Table 5.
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