SofTec Microsystems ZK-HC08AX-A User manual

Copyright © 2005 SofTec Microsystems®
DC00906
SofTec Microsystems
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ZK-HC08AX-A
Starter Kit for Freescale
MC68HC908AB/AS/AZ Family
(64-Pin QFP ZIF Socket)
User’s Manual
1. Introduction
Overview
The ZK-HC08AX-A Starter Kit has been designed for the evaluation of
the Freescale MC68HC908AB/AS/AZ family and the debugging of user
applications. The ZK-HC08AX-A Starter Kit can be used as a standalone
application, or via its built-in USB to MON08 bridge, or together with an
external debugger through a MON08-compatible connection.
Starter Kit Features
The ZK-HC08AX-A Starter Kit features the following sections.
1. An “MCU” section containing:
 An MC68HC908AZ60A microcontroller (in 64-pin QFP package,
already programmed with a demo application—in addition, you
can also use any other pin-to-pin-compatible device);
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 ZIF socket for the microcontroller;
 A connector area to access the I/O pins of the microcontroller
for expansion prototyping;
 Two clock sources: a provision for a clock module, and a 8 MHz
crystal, selectable via the “OSC SEL” jumper;
 One jumper (“VREFH SEL”)which allow the high voltage
reference for the MCU internal A/D converter to be defined;
 A connector (J105) with RST_IN# and RST_OUT# signals.
2. A “POWER SUPPLY” section which accepts a 12 V DC voltage
(used for the LIN and CAN transceivers) and provides a regulated
VDD voltage for the rest of the board. A circuitry (driven by the
“MON08 CONNECTORS” and “USB TO MON08 INTERFACE”
sections of the board) is present which allows the automatic power
on and off of the board for entering the “monitor mode”.
3. A built-in “USB TO MON08 INTERFACE” section which allows the
host PC to communicate with the microcontroller through a standard
USB interface. USB 2.0 is fully supported. When using an external
in-circuit debugger (via the “MON08” or “EMON08” connectors),
the “USB TO MON08 INTERFACE” circuitry must be bypassed by
removing all of the “ENA” jumpers in this area.
4. Two connectors for external in-circuit debugging/programming. Even
though the Starter Kits feature a built-in USB to MON08 interface,
two additional, separate MON08 connectors are present which allow
an external in-circuit debugger to be used. The “EMON08”
(Enhanced MON08) connector is used by in-circuit debugging tools
such the Freescale ICS system or the SofTec Microsystems
inDART-HC08; other tools, instead, use the “MON08” connector.
If you use an external in-circuit debugger/programmer, an additional
“VDD CTRL” connector allows you to control the Starter Kit’s VDD
voltage using the external tool’s power control. The output
impedance (both low and high) of the external tool driving the “VDD
CTRL” connector’s VDD_CTRL signal is not important.
5. A “RESET” section containing the push-button connected to the
MCU’s reset pin through a basic RC network.
6. An “INPUTS” section containing:
 Four push-buttons, together with jumpers to connect/disconnect
them to/from the microcontroller’s PTH1, PTH0, PTG1 and
PTG0 lines;
 Eight general-purpose DIP-switches, together with jumpers to
connect/disconnect them to/from the microcontroller’s PTE[7..4]
and PTF[3..0] lines;
 A potentiometer, together with a jumper to connect/disconnect it
to/from the microcontroller’s PTB0/ATD0 pin.
7. An “OUTPUTS” section containing eight high-efficiency (low-current)
LEDs connected to port PTD, together with eight jumpers to
connect/disconnect each of the eight LEDs to/from their respective
port PTD pins.
8. A “RS-232” section providing one RS-232 channel connected to the
microcontroller’s SCI serial communication interface. The
microcontroller’s PTE0/TXD and PTE1/RXD lines used by the RS-
232 channel are shared with the LIN transceiver’s RX and TX lines.
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Use the “RXD SEL” and “TXD SEL” jumpers in the “SERIAL
SETTINGS” section of the board to select whether to use the RS-
232, LIN, or to free the microcontroller’s PTE0/TXD and PTE1/RXD
lines. A 9-pin, D-Sub female connector is provided for the RS-232
channel.
9. The “LIN” section contains one LIN transceiver, capable of a speed
of up to 100 Kbps in fast mode. The LIN node can be configured as
a master node via the “MASTER NODE ENA” jumper, which inserts
a 3.3 KOhm resistor between the LIN bus line and the LIN
transceiver power supply line. The LIN transceiver can be powered
either by the Starter Kit’s internal 12 V DC reference, or by the LIN
network itself, via the “TRANSCEIVER SUPPLY SEL” jumper.
Analogously, the LIN network can be supplied by the Starter Kit’s
internal 12 V DC reference via the “LIN SUPPLY ENA” jumper. The
microcontroller’s PTE0/TXD and PTE1/RXD lines used by the LIN
transceiver are shared with the RS-232 transceiver’s TXD and RXD
line. Use the “TXD SEL” and “RXD SEL” jumpers in the “SERIAL
SETTINGS” section of the board to select whether to use the RS-
232, LIN, or to free the microcontroller’s PTE0/TXD and PTE1/RXD
lines. A 3x1 male header connector is provided to interface to an
external LIN bus.
10. The “SERIAL SETTINGS” section has two jumpers (“TXD SEL” and
“RXD SEL”) that allow the use of the SCI peripheral of the
microcontroller to be chosen. The SCI peripheral can be connected
to the LIN node or to the RS-232 channel , or can be freed by
removing all jumpers.
11. The “CAN” section contains one fault-tolerant (up to 125 Kbaud)
CAN transceiver. The TX and RX signals of CAN node can be
disconnected by removing the “CANTX ENA” and “CANRX ENA”
jumpers from the microcontroller’s CANTX and CANRX pins. A 3x1
male header connector is provided to interface to an external CAN
bus.
12. A prototype area features both a standard, thru-hole area (for
mounting traditional components) and a SMD area (for soldering
SMD components). Additionally, all of the board’s supply lines (12 V,
VDD and GND lines) are provided.
1
2
3
4
5
8
9
6 7
10
11
12
The ZK-HC08AX-A Starter Kit
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Supported Devices
The ZK-HC08AX-A Starter Kit supports the following devices:
 MC68HC908AB family;
 MC68HC908ASxxA family;
 MC68HC908AZxxA family;
 And any future pin-to-pin compatible device.
Recommended Reading
 Freescale HC08 microcontroller-specific datasheets;
 SK-HC08 and ZK-HC08 Series Starter Kit User’s Manual;
 ZK-HC08AX-A Schematic.
2. The “RST_IN/RST_OUT” Connector
Introduction
All of the HC08 family devices feature a monitor code resident in ROM
which, through a serial communication line, allows the programming and
the in-circuit debugging of the user application. The monitor code is
executed in “monitor mode”; the user application is executed in “user
mode”.
To enter the monitor mode some microcontroller lines must be properly
driven. In the case of the MC68HC908AB, AS and AZ families, these
lines are PTA0 (serial communication line), PTC0, PTC1 and PTC3.
Additionally, to enter the monitor mode, a high-level voltage signal
(VTST) must be generated on the IRQ and RST pins of the
microcontroller. In the case of the MC68HC908AB, AS and AZ families,
the VTST voltage is typically 8.1 V.
The “RST_IN#/RST_OUT#” Connector
The “RST_IN#/RST_OUT#” connector, in the “MCU” section of the
board, features the RST_IN# and RST_OUT# signals.
Depending on what in-circuit debugger/programmer you are using (built-
in USB to MON08 interface, external tool connected to the “EMON08”
connector or external tool connected to the “MON08” connector) the
RST_IN# and RST_OUT# signals assume different meanings.
Using the “EMON08” Connector
Interfacing an external in-circuit debugger/programmer via the
“EMON08” connector allows the number of wasted lines required to
enter the monitor mode and executing the monitor code to be reduced.
In addition to the RST# line, the “EMON08” connector features two
special lines, RST_IN# and RST_OUT#, which allow your target
application to be interfaced to the target microcontroller’s reset line
without worrying about the high voltage that is generated on the RST#
line.
When using the “EMON08” connector:
 The RST_OUT# signal in the “RST_IN#/RST_OUT#” connector is
the reset signal generated by the external in-circuit
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debugger/programmer to the target system: it can be GND or open
drain.
 The RST_IN# signal is the reset signal generated by your target
application: it is adapted by the external in-circuit
debugger/programmer which properly drives the microcontroller’s
RST# line.
Using the “MON08” Connector
When using the “MON08” connector, the RST_IN# and RST_OUT#
signals in the “RST_IN#/RST_OUT#” connector coincide with the
microcontroller’s RST# signal.
Using the Built-In USB to MON08 Interface
When using the built-In USB to MON08 Interface, the RST_IN# and
RST_OUT# signals in the “RST_IN#/RST_OUT#” connector coincide
with the microcontroller’s RST# signal.
3. Summary of Jumper and Connector Settings
Jumpers Summary
Name Reference Description/Pinout
J106
1
2
3
VREFH SELECTION
1-2 (USER) VREFH connected to the J104
connector
2-3 (VDD) VREFH tied to VDD (default)
J108
J109
1
1
EMON08 CONNECTOR
Installed When using the built-in USB to
MON08 interface or an external
in-circuit debugger/programmer
connected to the “MON08”
connector (default)
Not Installed When using an external in-circuit
debugger/programmer connected to
this connector
J111
1
2
3
OSC SEL
1-2 (CLOCK) Clock selected
2-3 (CRYSTAL) Crystal configuration selected
(default)
J201
PTG0 PUSH-BUTTON ENABLE
Installed The PTG0 push-button is
connected to the
microcontroller’s PTG0 pin
(default)
Not Installed The PTG0 push-button is not
connected to the microcontroller
J202
PTG1 PUSH-BUTTON ENABLE
Installed The PTG1 push-button is
connected to the
microcontroller’s PTG1 pin
(default)
Not Installed The PTG1 push-button is not
connected to the microcontroller
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Name Reference Description/Pinout
J203
PTH0 PUSH-BUTTON ENABLE
Installed The PTH0 push-button is
connected to the
microcontroller’s PTH0 pin
(default)
Not Installed The PTH0 push-button is not
connected to the microcontroller
J204
PTH1 PUSH-BUTTON ENABLE
Installed The PTH1 push-button is
connected to the
microcontroller’s PTH1 pin
(default)
Not Installed The PTH1 push-button is not
connected to the microcontroller
J205
POTENTIOMETER ENABLE
Installed The potentiometer is connected
to the microcontroller’s PTB0 pin
(default)
Not Installed The potentiometer is not connected
to the microcontroller
J206 1
SWITCH ENABLE
Installed Each jumper, when installed,
connects a DIP-switch to the
respective microcontroller’s pin
(default)
Not Installed The DIP-switches are not connected
to the microcontroller.
J207 1
LED ENABLE
Installed Each jumper, when installed,
connects a LED to the respective
microcontroller’s pin (default)
Not Installed The LEDs are not connected to the
microcontroller.
J303
CANTX ENABLE
Installed Microcontroller’s TXCAN pin
connected to CAN transceiver
(default)
Not Installed Microcontroller’s TXCAN pin floating
J304
CANRX ENABLE
Installed Microcontroller’s RXCAN pin
connected to CAN transceiver
(default)
Not Installed Microcontroller’s RXCAN pin
floating
J306
LIN SUPPLY ENABLE
Installed LIN bus is powered by the Starter
Kit’s internal 12 V DC voltage
(default)
Not Installed LIN bus is self-powered
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Name Reference Description/Pinout
J307
1
2
3
LIN TRANSCEIVER SUPPLY SELECTION
1-2 (12V) LIN transceiver is supplied by the
Starter Kit’s internal 12 V DC
voltage (default)
2-3 (LIN NETWORK)
LIN transceiver is supplied by the
LIN bus’ VBAT line
J308
LIN MASTER NODE ENABLE
Installed LIN master node (default)
Not Installed LIN slave node
J311
1
2
3
RS-232/LIN RXD SELECTION
1-2 (LIN) Microcontroller’s PTE1/RXD pin
connected to LIN transceiver
2-3 (RS-232) Microcontroller’s PTE1/RXD pin
connected to RS-232 transceiver
(default)
J312
1
2
3
RS-232/LIN TXD SELECTION
1-2 (LIN) Microcontroller’s PTE0/TXD pin
connected to LIN transceiver
2-3 (RS-232) Microcontroller’s PTE0/TXD pin
connected to RS-232 transceiver
(default)
J402 1
USB TO MON08 ENABLE
Installed The USB to MON08 interface is
enabled
Not Installed The USB to MON08 interface is
disabled
Connectors Summary/Pinout
Name Reference Description/Pinout
J101,
J102,
J103,
J104
MCU I/O Connectors
See schematic for pin explanation
J105 1
2
RST_IN# and RST_OUT#
1. RST_IN#
2. RST_OUT#
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Name Reference Description/Pinout
J107 1
3
5
7
9
11
13
15
2
4
6
8
10
12
14
16
MON08 Connector
1. N.C.
2. GND
3. N.C.
4. RST#
5. N.C.
6. IRQ#
7. N.C.
8. N.C.
9. N.C.
10. PTA0
11. N.C.
12. PTC0
13. N.C.
14. PTC1
15. VDD_CTRL
16. PTC3
J108 1
3
5
7
9
11
13
15
2
4
6
8
10
12
14
16
EMON08 Connector
1. RST_OUT#
2. GND
3. RST_IN#
4. RST#
5. TGT_IRQ#
6. IRQ#
7. N.C.
8. N.C.
9. TGT_PTA0
10. PTA0
11. TGT_PTC0
12. PTC0
13. TGT_PTC1
14. PTC1
15. TGT_PTC3
16. PTC3
J109 1
EMON08 Connector
1. RST#
J110
1
2
VDD CTRL
1. VDD_CTRL
2. GND
J112
Ground Test Point
J301 1
2
12 V DC Power Supply Input Connector
1. 12 V DC
2. GND
J302
Ground Test Point
J305 1 3
CAN Connector
1. CANH – CAN Differential Bus Line
2. GND
3. CANL – CAN Differential Bus Line
J309 1 3
LIN Connector
1. VBAT – LIN Bus Power Supply
2. LIN – LIN Signal
3. GND
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Name Reference Description/Pinout
J310
69
5 1
RS-232 Connector
1. N.C.
2. TX
3. RX
4. N.C.
5. GND
6. N.C.
7. N.C.
8. N.C.
9. N.C.
J401
USB Connector
1. 5 V DC USB Bus Power Supply Line
2. USB D-
3. USB D+
4. GND
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