SOFTEC MICROSYSTEMS IDB-HC08JK User Guide

; nor for any infringements

IDB-HC08JK
Evaluation Board
For Motorola MC68HC908JK

User’s Manual

1. Introduction

Copyright © 2002 SofTec Microsystems®
DC00524

Overview

The IDB-HC08JK Evaluation Board demonstrates the capabilities of the
20-pin MC68HC908JK devices. The IDB-HC08JK Evaluation Board can
be used as a standalone application or with an emulator system, such as
inDART-HC08, through a MON08-compatible connection.

Board Features

The IDB-HC08JK Evaluation Board has the following hardware features:

1. An MC68HC908JK3 microcontroller (in DIP20 package, already
programmed with a demo application—in addition, you can also use
any of the MC68HC908JK family devices);

2. ZIF socket for the microcontroller;

3. A standard MON08 connector;

4. Eight jumpers to connect/disconnect each of the eight LEDs to/from
their respective Port B and Port D pins;

5. Eight high-efficiency (low-current) LEDs connected to Port B and Port
D;

SofTec Microsystems

E-mail (general information): [e-mail]
E-mail (marketing department): [e-mail]
E-mail (technical support): [e-mail]
Web: http://www.softecmicro.com

Important

SofTec Microsystems reserves the right to make improvements to its products, their documentation and software routines, without notice. Information
in this manual is intended to be accurate and reliable. However, SofTec Microsystems assumes no responsibility for its use
of rights of third parties which may result from its use.

SOFTEC MICROSYSTEMS WILL NOT BE LIABLE FOR DAMAGES RESULTING FROM LOSS OF DATA, PROFITS, USE OF PRODUCTS, OR
INCIDENTAL OR CONSEQUENTIAL DAMAGES, EVEN IF ADVISED OF THE POSSIBILITY THEREOF.

Trademarks

inDART is a trademark of SofTec Microsystems.
Microsoft and Windows are trademarks or registered trademarks of Microsoft Corporation.
PC is a registered trademark of International Business Machines Corporation.
Other products and company names listed are trademarks or trade names of their respective companies.

IDB-HC08JK User's Manual

11 12

6. A potentiometer, together with a jumper to connect/disconnect it
to/from PTD2;

7. A push-button switch connected to RESET;

8. A push-button switch, together with a jumper to connect/disconnect it
to/from PTD3;

9. A 16-MHz crystal oscillator, together with two jumpers to
connect/disconnect it from the microcontroller’s OSC1 and OSC2
pins;

10. A connector for a 9-12-V, 200-mA (unregulated) power supply and an
auxiliary power supply connector for a 5-V (max., regulated), together
with a jumper to select the power supply source;

11. A connector area to access the I/O pins of the microcontroller for
expansion prototyping;

12. A prototyping area.

10

3

5

1

9

4

2

6

7 8

The IDB-HC08JK Demo Board

Supported Devices

The IDB-HC08JK Evaluation Board supports the following devices:

§ MC68HC908JK1;

§ MC68HC908JK3;

§ And any future MC68HC908JK family pin-to-pin compatible device.

Recommended Reading

Motorola MCU CD-ROM or individual datasheet;
Motorola CPU08 Central Processor Unit Reference Manual;
inDART-HC08 User’s Manual.

Page 2

2. Getting Started

Overview

The IDB-HC08JK Evaluation Board may be used as a standalone
application or with a MON08-based emulator/programmer (host mode).

Standalone Mode

The IDB-HC08JK Evaluation Board comes with the microcontroller pre­programmed with a sample application. When working in standalone
mode, the sample application configures the A/D peripheral to convert on
the A/D channel connected to the potentiometer and displays the results
on the LEDs.

In order for the IDB-HC08JK Evaluation Board to work in standalone
mode, the MON08 connector’s pins must be jumpered as show below
(factory setting).

IDB-HC08JK User's Manual

MON08 Connector Jumpered for Standalone Mode Operation

Additionally, you must verify that the board’s other jumpers are set
correctly.

§ Make sure that both the “OSC1” (J6) and “OSC2” (J7) jumpers select
the “INT” position. This is needed to enable the on-board 16-MHz
crystal oscillator.

§ Make sure that all of the “LED ENABLE” jumpers (J10) and the
“POTENTIOMETER ENABLE” jumper (J9) are inserted.

§ Make sure that the pre-programmed sample device is in the
appropriate socket on the board. Finally, power up the board. The
IDB-HC08JK Evaluation Board can be powered either via the
“UNREG. VDD” connector (J3) or the “REG. VDD” connector (J4).

The “UNREG. VDD” connector accepts 9-12 V DC, 200-mA wall plug-in
power supply with a 2.1 mm pin and sleeve plug with positive in the
center and sleeve as ground. When powering the board through this
connector, make sure the “VDD SOURCE” connector (J11) selects the
“UNREG.” Position. The “UNREG. VDD” voltage is internally regulated to
5 V DC.

The “REG. VDD” connector accepts 5 V DC (max.). When powering the
board through this connector, make sure the “VDD SOURCE” connector
(J11) selects the “REG.” Position. The “REG. VDD” voltage directly
powers the microcontroller and the rest of the board.

Page 3

IDB-HC08JK User's Manual

Upon powering up the board, the green “POWER” LED turns on. By
rotating the potentiometer, you affect the results of the A/D conversion,
and the value of each conversion is displayed (in a linear bar fashion) on
the LEDs.

Host Mode

The IDB-HC08JK Evaluation Board can be used in conjunction with a
MON08-based emulator/programmer, such a SofTec Microsystems’
inDART-HC08 In-Circuit Debugger/Programmer or a Motorola
development tool.

If you use the evaluation board with SofTec Microsystems’ inDART­HC08, a sample application similar to that described in the previous
section can be executed in “Host” mode, where the program execution is
controlled by the host PC. You can use the PC, additionally, to debug the
application by, for example, execute the program step by step and
watching how the microcontroller registers vary, by using the Metrowerks’
CodeWarrior HC08 IDE provided with inDART-HC08. The example is
available both in Assembly and in C language. Please refer to the
inDART-HC08 user’s manual for a step-by-step tutorial.

In order to work with an emulator/programmer, the jumpers in the MON08
connector must be removed, and the MON08 cable of the
emulator/programmer must be connected to the evaluation board’s
MON08 connector (J1) connector, taking care of the proper polarity. The
J2 connector is not used in this mode.

3. MON08 Connections (J1 Connector)

Pin # Pin Name Description

1 RST_OUT# Reset signal to target system: GND or open drain output

2 GND System ground.
3 RST_IN# Reset signal from target system: GND to VDD input to control

4 RST# MCU reset; held at VPP (or VDD, depending on the target

5 TGT_IRQ# Interrupt signal from target system: GND to VDD input to control

6 IRQ# MCU interrupt; held at VPP when the TGT_IRQ# signal is not

7 None N.C.
8 None N.C.
9 TGT_PTB0 Port B, bit 0; reserved MCU connection (unavailable to

10 PTB0 Port B, bit 0; MON08 single-wire communication.
11 TGT_PTB1 Port B, bit 1.
12 PTB1 Port B, bit 1; held at VDD during reset.
13 TGT_PTB2 Port B, bit 2.
14 PTB2 Port B, bit 2; grounded during reset.
15 TGT_PTB3 Port B, bit 3.
16 PTB3 Port B, bit 3; held at ground or VDD during reset, depending on

reflecting the state of the MCU RST# and RST_IN# signals.

the state of the MCU RST# and RST_OUT# signals.

microcontroller) out of reset. No other target-system logic
should be tied to this signal.

the state of the MCU IRQ# signal.

asserted.

application).

the “Frequency Divider” parameter (see inDART-HC08 User’s
Manual).

MON08 Signals

Page 4

VDD

LD9

Q8

R19

BSS138

470R

PTD7

R18

RED

10K

LD8

PTD6

LD7

PTD5

LD6

PTD4

LD5

PTB7

LD4

PTB6

LD3

PTB5

LD2

Q7

R17

BSS138

470R

RED

R16

10K

Q6

R15

BSS138

470R

RED

R14

10K

Q5

R13

BSS138

470R

RED

R12

10K

Q4

R11

BSS138

470R

RED

R10

10K

Q3

R9

BSS138

470R

RED

R8

10K

Q2

R7

BSS138

470R

RED

R6

10K

Q1

R5

BSS138

470R

R4

PTB4

RED

10K

VSS

J10

1 2

3 4

5 6

7 8

PTD7

PTD6

PTD5

PTD4

R1

470R

IRQ#

PTD2

PTD3

PTD4

17

RST

PTD2

PTB114PTB6

PTB0

PTB2

15

13

PTB0

PTB1

PTB2

100nF

10uF

16

PTD3

PTB312PTB4

PTB3

19

11

PTB4

VSS

PTD4

PTD5
18

8

PTB5

PTD5

PTB5

PTD6

PTD610PTD7

7

PTB6

PTD7
9

PTB7

6

PTB7

J6

(EXT)

OSC1

VDD

RST#
20

1

IRQ1

VDD

U1

5

C6

+
C5

LD1

POWER

GREEN

C4

(UNREG.)

VSS

100nF

C3

10uF

+

VDD SOURCE

3

VOUT

VIN

U2

1

C2

C1
+

D1

GF1M

312

J3

GND

2

78M05

100nF

10uF

9-12V

UNREG. VDD

VSS

POWER SUPPLYSIGNAL PINS

VDDTGT_IRQ#

2

J11

3

(REG.)

1

2

J4

REG. VDD

MAX 5V

9 10

11 12

13 14

15 16

PTB7

PTB6

PTB5

PTB4

OSC13OSC2

OSC1

123

(INT)

R2

Y1

C7

22pF

LED ENABLE

2

4

J7

123

(INT)

10M

16MHz

C8

VSS

MC68HC908JK

(EXT)

OSC2

22pF

VSS

P1

PTD2

OSC2

VDD

VDD

1K

12

J9

ENABLE

PTD2

SW2

R3

10K

12

J8

ENABLE

PTD3

VSS

IDB-HC08JK Sheet: 1/1Date: 27/09/2002ID: SD00278

PTD3

VSS

INPUTS OUTPUTS

VSS

(N.C.)

RST#

IRQ#

PTB0

1 2

3 4

5 6

RST_OUT#

RST_IN#

TGT_IRQ#

7 8

9 10

TGT_PTB0

PTB1

11 12

TGT_PTB1

PTD5

PTD2

PTD3

TGT_PTB0

PTD4

J5

3 4

5 6

7 8

OSC2

VSS

OSC1

(IRQ1#) 1 2

(OSC2/PTA6) 1

9 10

VDD

11 12

13 14

PTB7

PTB6 TGT_PTB1

PTB4

TGT_PTB3

TGT_PTB2

15 16

17 18

19 20

PTB5

PTD7

PTD6

21 22

RST_IN# RST_OUT#

J1

J2

1

RST#

PTB2

PTB3

13 14

15 16

TGT_PTB2

TGT_PTB3

VSS

RST_IN#

SW1

RESET

VSS

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MON08 INTERFACE OSCILLATOR MCU

(PTB2)

(PTB1)

(PTB3)

(PTB0)