please dont rip this site

SX Power Consumption in Turbo vs Non-Turbo modes

Terry says:

...the non-turbo mode does NOT divide the clock speed. At the slower clock rates it really doesn't save much current at all.

Here is the test program:

DEVICE SX28,STACKX,OPTIONX,OSC128KHZ
FREQ 128_000

PROGRAM Start NOSTARTUP

Start:
  TRIS_A=0
  TRIS_B=0
  TRIS_C=0
Main:
  TOGGLE RB.5
  PAUSE 5000
  GOTO Start

Here is what I measured {ed: this was at 5V supply, consumption would have been much less at 3.3 or 2.5 volts. See: SX Power Issues}

32KHz Turbo = 1.32mA
32KHz Non-Turbo = 1.30mA

128KHz Turbo = 1.46mA
128KHz Non-Turbo = 1.40mA

1MHz Turbo = 3.1mA
1MHz Non-Turbo = 2.4mA

4MHz Turbo = 7.7mA
4MHz Non-Turbo = 5.2mA

Considering that 1MHz Turbo (3.1mA) has the same performance as 4MHz Non-Turbo (5.2mA). It is better to use the turbo mode if you are looking at MIP per mA.

Perl62 says:

Non-turbo mode simply adds a few cycles delay to emualte the instruction timing of a PIC. It's purpose was simply to allow PIC firmware to be directly loaded to the SX and still be able to run.

file: /Techref/scenix/turbopower.htm, 1KB, , updated: 2005/1/21 12:31, local time: 2022/6/30 22:47,
TOP NEW HELP FIND: 
44.201.94.72:LOG IN

 ©2022 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://www.sxlist.com/techref/scenix/turbopower.htm"> SX Power Consumption in Turbo vs Non-Turbo modes</A>

After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type a nice message (short messages are blocked as spam) in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?

 

Welcome to sxlist.com!


Site supported by
sales, advertizing,
& kind contributors
just like you!

Please don't rip/copy
(here's why

Copies of the site on CD
are available at minimal cost.
 

Welcome to www.sxlist.com!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .