ZK-HC08AX-A SofTec Microsystems SRL, ZK-HC08AX-A Datasheet - Page 4

• Manufacturer Part Number: ZK-HC08AX-A
• Description: KIT STARTER FOR MC68HC908AB/S/Z
• Manufacturer: SofTec Microsystems SRL
• Type: MCUr

Specifications of ZK-HC08AX-A

• Contents: Board, Cable, Software, Datasheets and User Manual
• For Use With/related Products: Freescale MC68HC908AB/ AS/ AZ (64-QFP ZIF Socket)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 520-1033

2. The “RST_IN/RST_OUT” Connector
Supported Devices
The ZK-HC08AX-A Starter Kit supports the following devices:
Recommended Reading
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:
MC68HC908AB family;
MC68HC908ASxxA family;
MC68HC908AZxxA family;
And any future pin-to-pin compatible device.
Freescale HC08 microcontroller-specific datasheets;
SK-HC08 and ZK-HC08 Series Starter Kit User’s Manual;
ZK-HC08AX-A Schematic.
The RST_OUT# signal in the “RST_IN#/RST_OUT#” connector is
the reset signal generated by the external in-circuit
ZK-HC08-AX-A User's Manual
Page 4