TStik2 is mature and stable -we are pleased to report that TStik is in use by several new OEMs who are reporting that it is much more reliable than other TINI modules.

1. 2 MBytes flash -- over 1.5 MBytes is available for your programs and data. This provides much more flash memory than the TINI390 which only has 64 KBytes of flash available for your use. TStik has enough flash that you can store your entire application in flash -- where it cannot be lost due to heap corruption or a low NVRAM backup battery.
2. TStik2 supports simultaneous CAN and I2C using new dedicated I2C pins on SIMM72.21 and 22.
3. Three UARTs now on Tstik. Serial1 can be switched on-the-fly between 1-Wire and RS232 use.
4. High speed CAN to 1 Mbaud is now possible on TStik due to its 15.000 MHz x 2 crystal which, being even MHz, can generate high speed CAN baud rates with the required accuracy to interface with other CAN systems.
5. No critical jumpers to set in the field- TStik instead uses an on-board configuration register for the most commonly-changed options. TStik does have some jumpers for very basic options. But once you set those, other options - which you would expect to change over the installed life of TStik - can be changed through the on-board configuration register. This makes TStik easier to maintain and configure remotely.
6. TStik has no address, data, or strobe bus on the Simm72 connector. Most users don't need this memory bus anyway, and keeping the sensitive, raw address and data pins off the edge connector means that it's much harder to damage them. This makes TStik more reliable and more likely to always boot up as expected. In a memory-mapped device such as TINI390, on the other hand, a malfunctioning memory mapped I/O device can prevent TINI from booting up, since there is no isolation of memory-mapped I/O devices from the all-important address and data bus. This is a frequently-reported problem on the TINI user lists. Plus, an ESD hit on the memory-mapped device can damage TINI's core chips, or corrupt program and data memory. Such problems are much less likely on TStik.
7. TStik I/O expansion is via 1-Wire, CAN, I2C, and SPI. These are more reliable than memory-mapped I/O, and these I/O pins don't interfere with the memory and address bus. So these types of I/O devices cannot "crash" TStik or prevent it from booting up. These I/O buses are a bit slower than memory-mapped I/O, but in most cases this is not an issue. TINI Java is not a good performer at sustained high-speed memory mapped I/O, anwyay. Plus, most industrial I/O data is relatively slow-changing (temperature for example).1-Wire and CAN support I/O points which may be hundreds of feet from the TINI module - something not possible with memory-mapped I/O.
8. Netboot can be supported in an off-module iButton or 1Wire device on a socket board such as TILT400.Pro. Netboot helps you remotely administer TStik. For example, in our manufacturing test, a virgin TStik boots up and receives the TINIOS and manufacturing test code automatically by means of Netboot.
9. Plugs into - and upgrades - the vast majority of existing SIMM72 TINI390 sockets. Compare this to the new SODIMM144 TINI400 from Dallas and other vendors which uses a much more expensive connector and is completely incompatible with all current SIMM72 TINI sockets.
10. TStik is more ESD resistant since there is no A18 address line (or even a Simm72 pad) or Vcc adjacent to the ethernet Simm72 pads.
11. When installed in a TILT400 socket board, TStik has "Bob Jones" termination, and also TVS surge suppression on the ethernet signals. This added components and materials cost to TILT400, but it makes the TStik/TILT400 combination much more resistant to ESD and spikes on the ethernet lines.
12. TStik and TILT400 are produced in an ISO9001-registered facility. This in itself does not necessarily make a product more reliable, but it does mean that TStik is produced with strict attention to process control, inspection, and monitoring and logging of any discrepancies in the manufacturing process. This is why ISO9000 registration matters to so many people these days. It's just one more sign that Systronix is dedicated to producing a product which conforms to its advertised specifications and will be defect-free.
13. Dallas- approved and tested design. TStik is a Systronix design, and is not simply a clone of any Dallas product. However, to fully support the TINI JVM TStik must be highly functionally compliant with the Dallas TINI400 architecture. Systronix is a licensed TAM (Tini Authorized Manufacturer). As part of this licensing, we have submitted the TStik design to Dallas TINI engineers for review, and have submitted significant quantities of TStik to Dallas for conformance testing and verification. TStik passes conformance testing with no problems.
14. Long-term relationship with Dallas/Maxim. Systronix has been shipping commercial-quality products based on Dallas secure and high speed micros for over 14 years! This doesn't mean we're perfect or know everything, but it does mean that we have a lot of experience with the entire Dallas controller family. We generally visit Dallas engineering headquarters at least once a year and meet with key technical and marketing people to discuss future product plans. Systronix and Dallas have been under mutual NDA (non-disclosure agreement) for over a decade. We value our relationship with Dallas and other Dallas partners and believe that it helps make all our products as good as they can possibly be.

JSimm.1Wire with a new DS2890 servlet is now part of the TStik online demo. The screen capture is the image to the left. It shows the DS2890 Digital Pot driving the DS2450 ADC. You can login to the demo, open a browser window on both the DAC and ADC. Then you can change the DAC value and see the change on the ADC. ADC Channels are as follows:

1. DAC output, 0-5V for DAC values 0-255. But note that the opamp on the DAC has a maximum output of one diode drop below Vcc or 4.25V, so DAC values of 215 and above all produce an output of 4.25 volts.
2. VCC on the 1Wire board, nominally 5.0 volts.
3. Channel 3 of the ADC is in output mode, so should be the Vol of that pin when in output mode
4. Connected to Channel 3, so it should display the same voltage as Channel 3.