Interfacing with HP-HIL
elson at pico-systems.com
Sat May 7 16:00:31 CDT 2016
On 05/07/2016 02:05 PM, Jon Elson wrote:
> On 05/07/2016 12:35 PM, Chuck Guzis wrote:
>> On 05/06/2016 10:26 AM, Paul Koning wrote:
>>> I think a well chosen hearing aid tube can outperform a
>>> classic (not
>>> L or LS) 7400 series IC.
>> This application sound like a perfect candidate for a CPLD.
> The Xilinx 9500 series of CPLDs are not low-power, by any
> means. They have a formula in the data sheet and a power
> calculator program, that are both WRONG! They
> underestimate power by a factor of 3!! I reported this to
> them, and they said I was right, but they were not going
> to fix the documentation! Sheesh!
> (The internal architecture is 36-input diode gates with
> pull-up resistors. You have two choices of resistor,
> low-power and fast.)
> The Xilinx CoolRunner II is quite low power, basically a
> CMOS FPGA architecture.
Oh, but only the 9500 series is a 5V part. The 9500 XL is 5
V tolerant, but needs 3.3 V supply.
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