Evaluation Type: Evaluation Boards
Did you receive all parts the manufacturer stated would be included in the package?: True
What other parts do you consider comparable to this product?: Microchip Explorer 16
What were the biggest problems encountered?: No serious problems were observed, but few points of the installation instructions should be clarified.
The Freescale Tower System is a modular development platform which aids in rapid prototyping and tool-reuse. Main components of a typical Tower System are: controller board, peripheral boards and elevator modules. The controller board of the TWR-S08LH64-KIT being reviewed features the the 8-bit MC9S08LH64 microcontroller which has an integrated 16-bit ADC and segemented LCD driver.
The TWR-S08LH64-KIT came in three CD-sized black plastic box. It contained the following items:
The TWR-S08LH64 controller board accepts any member of the MC9S08LL or MC9S08LH family of MCU’s from Freescale (the board has dual footprint for 64 and 80 LQFP packages). The board being reviwed is populated with the 80 pin MC9S08LH64CLK controller (see the black marks below the LCD on the next photo) which has 64K bytes flash and 4K bytes RAM memory.
The board fetures the following peripherals: MMA7361L Analog Accelerometer, RS-232 Serial Interface, Segmented LCD display, 1 Reset button, 4 Pushbuttons, 4 LED Indicators, 5K ohm Potmeter, Light sensor, Piezo Buzzer.
There is also an on-board Open Source Background Debugger Module (OS BDM) for (program downloading and debugging) fully supported by CodeWarrior. The board can be powered form the USB connector of the OS BDM, from the edge connectors or from a battery holder (CR2325) which is located on the back side of the board. The TWR-S08LH64 controller board also operate as a standalone debug tool that can be purchased separately from the complete kit.
One of the elevator modules is "active": it can provide +5V an +3.3 V obtained from a power-only Mini-B USB socket. This module contains a power switch as well. The other elevator is a passive ("dummy") board, it contains only connectors and bus wires.
The trough-the-hole empty protoboard is a 9 x 8 cm board with card-edge connectors that allows it to be plugged directly into the Tower System. The board provides access to all of the signals of the Tower System as well as a generous 8.3 x 3.8cm prototyping area.
The following photo shows the assembled TWR-S08LH64 Kit. The power is obtained from the power-only Mini-B USB connector of the elevator module. The the built in demo program is running.
The software CD bundled in the kit contains everything you need to run the demo programs. Please note that the USB driver for the OS BDM is installed together with the CodeWarrior Development Studio, so do not let Windows to find the drivers until you install Code Warrior!
The Quick Start Guide for TWR-S08LH64 gives step-by-step installation instructions which are easy to follow but few points need clarification:
After Step 1 the USB driver can be installed (you have to attach an USB cable to the OS BDM unit). You can allow Windows to automatically configure the USB drivers which were pre-loaded during the installation of CodeWarrior.
Running the demo programs
The installation CD contains two demo programs or Lab Tutorials. Boths were compiled and run smoothly following the instruction. Note thet the instuctions are attached in the Kit in two separate sheets. Don't miss the second sheet! Note also that you need an RS-232 cable since the pigtail cable is too short.
It is not quit clear for me, however, what is the role of the tables given in the Lab Tutorial 1 (Figs 11 through 15). These are related to the ADC module, however it cannot be undestood for a newcomer without digging into the data sheets and hardware schematic, so I think it is not appropriate in a "Quick Start" guide.
The Quick Start example demonstrates the usage of all of the peripharals. The Accelerator demo gives the opportunity to compera the effect of averaging and filtering of the analog signals from the 3D accelerometer.
In the following photo I tried to catch that moment when all of the LCD segments are swithced on at the beginning of the Quick Start demo. It gives you information about the capability of the LCD module.
The Freescale TWR-S08LH64-KIT is an excellent development tool. Both hardware and software worked perfectly,the demo projects were compiled and running without any trouble. The TWR-S08LH64 controller board which can be purchased separately is a good demo board for the MC9S08LH family so I gave maximum points almost everywhere except for the followings:
HCS08RMv1/D - HCS08 Family Reference Manual (324 pages)
HCS08QRUG - HCS08 Peripheral Module Quick Reference - A Compilation of Demonstration Software for HCS08 Modules (116 pages)