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Electronics => Microcontrollers => Topic started by: Crazy Ape on August 15, 2013, 04:51:28 pm

Title: Cheap ARM Cortex-M4F Microcontroller board.
Post by: Crazy Ape on August 15, 2013, 04:51:28 pm
Just got email from TI, they've dropped the price of their ARM Cortex-M4F launchpad to $7.99

I bought two of these a while back and am yet to get a chance to play with them.

The Stellaris LM4F120H5QR Microcontroller has:

* 32 KB single-cycle SRAM
* 256 KB Flash memory
* 2KB EEPROM

Stellaris LM4F120H5QR Microcontroller Datasheet (1191 Pages!!)
http://www.mouser.com/ds/2/405/lm4f120h5qr-124014.pdf (http://www.mouser.com/ds/2/405/lm4f120h5qr-124014.pdf)

TI's shop:
http://links.mkt102.com/ctt?kn=3&ms=NDIzMDY5OTES1&r=OTI4Mzg3NzU5OAS2&b=0&j=MTk4NjkyOTU3S0&mt=1&rt=0 (http://links.mkt102.com/ctt?kn=3&ms=NDIzMDY5OTES1&r=OTI4Mzg3NzU5OAS2&b=0&j=MTk4NjkyOTU3S0&mt=1&rt=0)
Title: Re: Cheap ARM Cortex-M4F Microcontroller board.
Post by: andersm on August 15, 2013, 07:02:18 pm
I'm guessing they're selling off old stock, that board has been replaced by the EK-TM4C123GXL (https://estore.ti.com/Tiva-C-LaunchPad.aspx) which still costs $12.99.

EDIT: If you buy one of these boards, be sure to read the errata list (http://www.ti.com/litv/pdf/spmz611g) as well.
Title: Re: Cheap ARM Cortex-M4F Microcontroller board.
Post by: Crazy Ape on August 15, 2013, 07:10:14 pm
I'm guessing they're selling off old stock, that board has been replaced by the EK-TM4C123GXL (https://estore.ti.com/Tiva-C-LaunchPad.aspx) which still costs $12.99.

EDIT: If you buy one of these boards, be sure to read the errata list as well.

Yeah, that's my guess as well, there is a big note in red on the product page of the Stellaris launchpad I linked to. It's still an interesting board if you're trying to get into ARM architecture.

And yes, the errata list is quite large. I ordered the two I have on 9/8/2012 and received the A3 version of the chip. I'm not sure what is shipping on the current models though.
Title: Re: Cheap ARM Cortex-M4F Microcontroller board.
Post by: Stonent on August 16, 2013, 12:33:46 am
Quote
•USB Micro-B plug to USB-A plug cable

Finally! I'm getting tired of collecting all these Mini B cables! It least Micro B can be used to charge modern devices in a pinch and not an old blackberry or ancient HTC phone.

Quote
Ships in 24 to 48 hours.

Quote
Please allow 4 to 6 weeks for delivery.

Lol wut?