Smith Machine Works, Inc.
Version 1.1-gdy, July 26, 2011
M68HC908QT/QY Mini
Rapid Development PCB
FEATURES
–
· An improved MON08 interface based on Figure 9-3 of the Motorola “Data Sheet” (MC68HC908QY4/D, Rev 0). Connects to a host PC with a simple, serial cable; No expensive interface boards are required.
·
Fully
Functional and Improved DTR controlled POR Interface. Jumper
selectable external oscillator and Vtst supply available to allow entry into
Vtst Monitor Mode as well as Forced Monitor modes. Circuit improvements resolve issues with
Vtst rise-time and fully remove Vtst from the target MCU during the POR cycle. The external oscillator may be disabled for
testing with the internal oscillator only.
A MANUAL POR mode is also available for debuggers/programmers that do
not support DTR driven POR cycles.
·
Dual power
supplies isolate the target MCU and Monitor interface from external interface
circuits.
- Supports both QT
and QY MCUs. While designed primarily for the Nitron QY (16
pin) family of devices, the target MCU socket can be easily converted
(with the simple installation of four Wire Wrap jumpers) to be compatible
with the QT (8 pin) MCUs.
·
A generously
sized and serious prototyping area. Three columns of 3-hole pads with heavy duty
ground and power buses accept all popular width Wire-Wrap Dip sockets from 0.3”
to 0.7” wide. Each of the three columns
has 70, 3-hole pads (enough for four 16-Pin sockets with 0.1” spacing between
each socket). Wide, 0.6” Dip sockets (such as needed by 32 Pin memory
chips) can be intermixed with standard 0.3” Dip sockets. The power and ground busses are heavily
bypassed with both bulk and high frequency capacitors.
·
STATUS LEDs. Dedicated
status LEDs monitor board power and status of the DTR controlled POR
circuit. Two additional LEDs are
available to indicate user program status.
·
TEST
POINTS. All target MCU pins are connected to convenient Wire
Wrap test points ready to attach to prototype area circuits or for the easy
attachment of scope probes or clip leads.
Five dedicated ground test points are conveniently located for the attachment
of scope ground clips or multi-meter common leads.
·
External
interface connectors. Mounting pads are provided to accept three, ten pin
flat ribbon cable connectors to interface the prototype PCB to external
circuits.
·
SIZE – The overall board size is 6.0” by 4.0”.
SOFTWARE COMPATIBILITY –
The NITRON EXPRESS Rapid Prototyping PCB was designed especially with the cost
and time conscious embedded systems designer in mind. It was designed expressly to be used with the
NoICE Debugger and the IMAGEcraft ICC08 C and Assembler
cross-development platform and IDE.
While neither of these products is “Free”, a “Free”
product that consumes substantial resources and requires a very steep “learning
curve” is not “free” either.
For more information
For the NoICE Debugger, see http://www.noicedebugger.com
For IMAGEcraft C, see
http://www.imagecraft.com
PRODUCT STATUS
–
The NITRON EXPRESS Rapid Prototyping PCB is currently available limited quantities.
Its current status is
“production ramp-up”. I have an initial
run of production boards on hand that will be built to order and sold on a
first-come, first-serve basis.
REGULATORY COMPLIANCE -
This product is intended only
for use in development laboratories. It is not intended for use in
end products subject to inspections or regulatory control in the
PRODUCT PRICING –
Pre-production pricing is set at $90.00 each, assembled and tested with
documentation.
Final pricing will be established after production quantities are determined.
Initial sales will be in the
Credit card capability is being investigated and may be available in the future. Until then, payment terms will be check or cash only.
For orders and inquiries,
contact the factory at bobsmith5@verizon.net
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