NXP Semiconductors Axiom DEMO9S08SF4 User manual

D O C - 0458- 0 1 0 , R E V A
Web Site: www.axman.com
Support: [email protected]
DEMO9S08SF4
Demonstration Board for Freescale MC9S08SF4
Microcontroller
USER GUIDE
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CONTENTS
USER GUIDE.............................................................................................................................1
CAUTIONARY NOTES ..............................................................................................................4
TERMINOLOGY.........................................................................................................................4
FEATURES................................................................................................................................5
REFERENCES...........................................................................................................................6
MEMORY MAP ..........................................................................................................................6
SOFTWARE DEVELOPMENT...................................................................................................6
DEVELOPMENT SUPPORT......................................................................................................7
INTEGRATED BDM .............................................................................................................. 7
BDM_PORT HEADER........................................................................................................... 7
POWER......................................................................................................................................7
POWER SELECT.................................................................................................................. 8
VOUT_SEL........................................................................................................................ 8
VX_EN............................................................................................................................... 9
RESET SWITCH ........................................................................................................................9
LOW VOLTAGE RESET............................................................................................................9
TIMING.....................................................................................................................................10
COMMUNICATIONS................................................................................................................10
USER OPTIONS ......................................................................................................................10
PUSHBUTTON SWITCHES............................................................................................ 10
POTENTIOMETER.......................................................................................................... 10
TEMPERATURE SENSOR ................................................................................................. 10
BUZZER.............................................................................................................................. 11
PTB0_SEL ...............................................................................................................................11
MCU I/O PORT.........................................................................................................................12
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FIGURES
Figure 1: Memory Map................................................................................................................6
Figure 2: BDM_PORT Header....................................................................................................7
Figure 3: VOUT_SEL Option Header .........................................................................................8
Figure 4: VX_EN Option Header ................................................................................................9
Figure 5: User Option Jumper Settings ....................................................................................11
Figure 6: PTB0_SEL Option Header ........................................................................................11
Figure 7: MCU I/O PORT –J1..................................................................................................12
REVISION
Date
Rev
Comments
June 9, 2009
A
Initial Release
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CAUTIONARY NOTES
1) Electrostatic Discharge (ESD) prevention measures should be used when handling this
product. ESD damage is not a warranty repair item.
2) Axiom Manufacturing does not assume any liability arising out of the application or use of
any product or circuit described herein; neither does it convey any license under patent
rights or the rights of others.
3) EMC Information on the DEMO9S08SF4 board:
a) This product as shipped from the factory with associated power supplies and cables,
has been verified to meet with requirements of CE and the FCC as a CLASS A product.
b) This product is designed and intended for use as a development platform for hardware
or software in an educational or professional laboratory.
c) In a domestic environment, this product may cause radio interference in which case the
user may be required to take adequate prevention measures.
d) Attaching additional wiring to this product or modifying the products operation from the
factory default as shipped may effect its performance and cause interference with
nearby electronic equipment. If such interference is detected, suitable mitigating
measures should be taken.
TERMINOLOGY
This development module utilizes option select jumpers to configure default board operation.
Terminology for application of the option jumpers is as follows:
Jumper –a plastic shunt that connects 2 terminals electrically
Jumper on, in, or installed –jumper is a plastic shunt that fits across 2 pins and the shunt is
installed so that the 2 pins are connected with the shunt.
Jumper off, out, or idle –jumper or shunt is installed so that only 1 pin holds the shunt, no 2
pins are connected, or jumper is removed. It is recommended that the jumpers be placed
idle by installing on 1 pin so they will not be lost.
Cut-Trace –a circuit trace connection between component pads. The circuit trace may be
cut using a knife to break the default connection. To reconnect the circuit, simply install a
suitably sized 0-ohm resistor or attach a wire across the pads.
Signal names followed by an asterisk (*) denote active-low signals.
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FEATURES
The DEMO9S08SF4 is a demonstration board for the MC9S08SF4 microcontroller.
Application development is quick and easy with the integrated, Open-Source, USB-BDM,
sample software tools, and examples. An optional BDM_PORT port is also provided to allow
use of a BDM_PORT cable. One, 40-pin connector provides access to all IO signals on the
target MCU.
MC9S08SF4, 20 TSSOP
4K Bytes Flash
128 Bytes RAM
Integrated Open-Source, USB-BDM
BDM_PORT header for external BDM cable
support
MCU_PORT pin header for access to MCU IO
signals
Power from USB-BDM or MCU_PORT
connector
USB-BDM Power Options include +5.0VDC
and +3.3VDC
Power Input Selection Jumpers
Voltage Output Select from USB-BDM
Power input from Connector J1
Optional Power output through Connector
J1
User Components Provided
3 Push Switches; 2 User, 1 Reset
5 LED Indicators; 2 User, VDD, STATUS, TPWR
5K ohm POT w /LP Filter
2300 Hz Piezo Buzzer w/ External Drive Circuit
User Option Jumpers to disconnect Peripherals
Connectors
40-pin MCU I/O Pin Header
BDM_PORT Connector for External BDM Cable (not installed)
USB Connector
Specifications:
Board Size 3.5” x 3.0”
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REFERENCES
The following reference documents are available on the CD or DVD provided with this board in
Acrobat Reader format. These documents are also available at www.axman.com/support.
DEMO9S08SF4_UG.doc DEMO9S08SF4 User Guide (this document)
DEMO9S08SF4_SCH_A.pdf DEMO9S08SF4 Schematic Rev. A
DEMO9S08SF4_Silk_A.pdf DEMO9S08SF4 Top Silk, Rev A
DEMO9S08SF4_Assy_A.pdf DEMO9S08SF4 Default Shunt Placement
DEMO9S08SF4.zip DEMO9S08SF4 Demo Application
MEMORY MAP
Figure 1 below shows the default memory map for the MC9S08SV16 and the MC9S08FL16
immediately out of reset. Refer to the MC9S08SF4 Reference Manual (RM) for further details.
Figure 1: Memory Map
$0000
$007F
Direct Page Registers
$0080
$00FF
RAM
128 bytes
$0100
$017F
Unimplemented
$1800
$185F
High Page Registers
$1860
$EFFF
Unimplemented
$D000
$FFFF
FLASH
4096 bytes
NOTE: The memory map above applies to the MC9S08SV16 and MC9S08FL16
microcontrollers
SOFTWARE DEVELOPMENT
Software development requires the use of a compiler or an assembler supporting the HCS08
instruction set and a host PC operating a debug interface. CodeWarrior Development Studio
for Microcontrollers is supplied with this board for application development and debug. Refer
to the supporting CodeWarrior documentation for details on use and capabilities.
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DEVELOPMENT SUPPORT
Application development and debug for the target MC9S08SF4 is supported through the
integrated, Open-Source Background Debug Mode (USB-BDM) interface. An optional 6-pos
BDM_PORT header allows connecting an external HCS12/HCS08 BDM cable. This header is
not installed in default configurations.
Integrated BDM
The DEMO9S08SF4 board features an integrated Open Source BDM (USB-BDM) based on
the Freescale MC9S08JM60 MCU. The integrated USB BDM supports application
development and debugging via background debug mode and provides primary power to the
development module. The integrated BDM is fully supported by CodeWarrior development
tools.
The integrated USB BDM provides power and ground to the target board eliminating the need
to power the board externally. Power from the USB BDM is derived from the USB bus. The
integrated USB BDM is designed to sink a maximum of 300mA of current from the USB bus.
Therefore, total current consumption for the target board, and connected circuitry, must not
exceed 300mA. This current limit describes the current supplied by the USB cable to the
BDM circuit, the target board, and any connected circuitry. Excessive current drain will violate
the USB specification causing the bus to disconnect. Damage to the host PC USB hub or the
target board may result.
BDM_PORT Header
A compatible HCS12 BDM cable may also attach to the 6-pin BDM interface header
(BDM_PORT). Figure 2 below shows the pin-out for the BDM_PORT header.
Figure 2: BDM_PORT Header
BKGD
1
2
GND
See the MC9S08SF4 Reference Manual for details
3
4
RESET*
5
6
VDD
NOTE: The BDM_PORT header is not installed in default configuration.
POWER
The DEMO9S08SF4 may be powered from the integrated USB-BDM or from the MCU IO
connector at J1. The USB-BDM is designed to supply either +5VDC or +3.3VDC to the target
MCU. The VOUT_SEL option jumper at JP1 selects the desired output voltage.
Power may also be applied to connector J1 or the board may be configured to supply power
from connector J1 to external circuitry.
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CAUTION:
Damage to the board may result if voltages greater than +5.5V are applied
at connector J1 input.
POWER SELECT
Power may be applied to the board through the integrated BDM circuitry, or through connector
J1. Power selection is achieved using 2 selection headers: the VOUT_SEL option header and
the VX_EN option header. Optionally, power may be sourced to external circuitry through
connector J1.
VOUT_SEL
The PWR_SEL option header allows the user to select power input either from either an
external power source connected to the VIN connector or from the integrated USB-BDM.
Figure 3 below details the PWR_SEL header connections.
Figure 3: VOUT_SEL Option Header
●
3V
5V
Enables +5VDC to target MCU (default)
3V
Enables +3.3VDC to target MCU
●
5V
CAUTION:
Do not configure the target board to draw more than 300mA when
powered from the integrated USB BDM. Damage to the target board or
host PC may result otherwise.
Power from the integrated BDM is drawn from the USB bus and is limited to 300 mA. This
current limit accounts for the total current supplied over the USB cable to the BDM circuit, the
target board, and any connected circuitry. Current drain in excess of value violates the USB
specification and will cause the USB bus to disconnect. This may cause the board to exhibit
power cycling where the board appears to turn off and back on continually. Damage to the
host PC or the target board may result.
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VX_EN
The VX_EN option header is a 2-pin jumper that connects or disconnects input J1-1 directly to
the target board voltage rail. J1-3 connects directly to the target board ground plane. Use of
this feature requires a regulated input power source. This power input is decoupled to
minimize noise but is not regulated or protected. Care should be exercised when using this
feature; no protection is applied on this input and damage to the target board may result if
excessive voltage is applied. Also, do not attempt to power the target board through this
connector while also applying power through the USB BDM or the PWR connector; damage to
the board may result.
Power may also be sourced to off-board circuitry through the J1 connector. The current
supplied from the USB bus limits current available to external circuitry. Excessive current drain
may damage the target board, the host PC USB hub. The figure below details the VX_EN
header connections.
Figure 4: VX_EN Option Header
ON
OFF
1
2
Enabled
Disabled
VX_EN
CAUTION:
Do not exceed available current from USB-BDM when sourcing power
through connector J1 to external circuitry.
RESET SWITCH
The RESET switch applies an asynchronous RESET to the MCU. The RESET switch is
connected directly to the RESET* input on the MCU. Pressing the RESET switch applies a
low voltage level to the RESET* input. A pull-up bias resistor allows normal MCU operation.
Shunt capacitance smoothes the reset pulse and ensures adequate pulse width.
The MC9S08SF4 MCU applies a multiplexed RESET* input. To use the RESET switch, the
RESET pin must be enabled (SOPT1_RSTPE). Refer to the MC9S08SF4 Reference Manual
for details on configuring using the RESET* input.
LOW VOLTAGE RESET
The MC9S08SF4 applies an internal Low Voltage Detect (LVD) circuitry. The LVD holds the
MCU in reset until applied voltage reaches the appropriate level. The LVD also protects
against under-voltage conditions. Consult the MC9S08SF4 Reference Manual for details on
LVD operation.
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TIMING
Default timing for the DEMO9S08SF4 is provided by the MC9S08SF4 internal timing source
which is active out of RESET. Refer to the MC9S08SF4 Reference Manual for details on
configuring the timing source.
COMMUNICATIONS
The MC9S08SF4 does not support serial communications. No board support for this
functionality is provided.
USER OPTIONS
The DEMO9S08SF4 includes various input and output devices to aid application development
and debug. User I/O includes 2 momentary pushbutton switches, 1 potentiometer, 1
temperature sensor, and 1 piezo buzzer. Each device may be enabled or disabled individually
with the USER1 option header. Each user enable is clearly marked as to functionality.
Pushbutton Switches
Two push button switches provide momentary, active-low input, for user applications. Pull-ups
internal to the MCU must be enabled to provide error free operation. Pushbutton switches
SW1 and SW2 are enabled to the MCU I/O ports by the USER1 option bank. Figure 5 below
shows the user jumper settings and MCU connections.
Potentiometer
A 5k ohm, thumb-wheel type, potentiometer at RV1 provides variable resistance input for user
applications. The output is the result of a voltage divider that changes as the thumb-wheel is
turned. The potentiometer is connected between VDD and GND with the center tap providing
the divider output. Figure 5 below shows the user jumper settings and MCU connection.
Temperature Sensor
A surface-mount, NTC thermistor (B = 3900) is installed at location RZ1. This component
provides a voltage input to the MCU inversely proportional to temperature. Figure 5 below
shows the user jumper settings and MCU connections.
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