STM32F3 equivalents from other manufacturers? - Page 1
Forum section: electronics / general

author: MT
author_rank: Super Contributor
timestamp: March 21, 2019, 03:06:02 am
content: What is other manufacturers equivalent to STM32F3 series?

author: bson
author_rank: Unknown
timestamp: March 21, 2019, 03:21:15 am
content: NXP Kinetis K seriesNXP LPC1100NXP LPC4000TI TM4C100

author: MasterT
author_rank: Frequent Contributor
timestamp: March 21, 2019, 03:25:10 am
content: Atmel (Microchip now):SAM3X (arduino DUE), SAM4X.

author: ajb
author_rank: Super Contributor
timestamp: March 21, 2019, 03:29:51 am
content: Equivalent in what respect?

author: ataradov
author_rank: Super Contributor
timestamp: March 21, 2019, 03:31:21 am
content: ST site for STM32F3 lists 4 different sub-families with different key features. Which ones do you need?

author: bson
author_rank: Unknown
timestamp: March 21, 2019, 03:34:02 am
content: I took that to mean Cortex-M3/M4, reasonably low power, 64k-1MB flash, 64-256k SRAM, a bunch of peripherals according to model, available in LQFP 48 and up (in addition to the usual BGA), priced $2-$15 in small qty. (The BGA packages often cost a few dollars more.) As opposed to multi-core, Cortex-A with cache and bus controllers, etc, or a stripped-down barebones CM0+ device. I.e., your generic 32 bit ARM SoC do-everything controller and basic application MCU.

author: MT
author_rank: Super Contributor
timestamp: March 21, 2019, 02:57:28 pm
content: Quote from: bson on March 21, 2019, 03:34:02 amYes sorta like that.. yet even smaller packages, SOIC14 etc. When i look at Farnell BGA is always cheaper and LQFP32 always costlier then LQFP48 but then Farnell yanking the pricing from month to month.Quote from: ajb on March 21, 2019, 03:29:51 amQuote from: ataradov on March 21, 2019, 03:31:21 amThere are basically no specific key features requested since thats what manufacturers want one to do as one of their marketing strategies , they want us to pick specifik devices so they can lock us in , so i trying to find out some thing "everyday usable" out how much of equivalent a STM32F3xxx is from other manufacturers one on one for every spec of the STM32F3 and see if pricing and availability is comparable or better or not, but also to compare that to next step up STM32F4..... or so...sort of..kind of. Its tiresome enough to wade through ST docus and compare a value of a change from something to something else.NXP LPC11 is M0 and 50Mhz so they not equivalent, LPC4074FBD80 is more like it yet it short on DAC and timers while F446 is cheaper and better spec'ed for example. For example, if one manufacturer offers one resistor string DAC but more timers one can substitute that with PWMs and vice versa. Looking at Ti and Atmel offerings...

author: ataradov
author_rank: Super Contributor
timestamp: March 21, 2019, 03:29:48 pm
content: This is the case where DigiKey parametric search will work very well to narrow down to a few devices you can check by hand.Microchip's more current devices that will be the closest fit are SAM D51 or SAM E54.I don't think there are Cortex-M4 devices in SOIC-14 package. Plenty of Cortex-M0+ in small packages though.

author: PCB.Wiz
author_rank: Super Contributor
timestamp: March 21, 2019, 06:36:51 pm
content: Quote from: MT on March 21, 2019, 02:57:28 pmYou could also look at Nuvoton ?https://www.nuvoton.com/hq/products/microcontrollers/arm-cortex-m4-mcus/?__locale=enIf DAC is important, then that would help narrow down your choices.Do not ignore the smaller 8b MCUs, as Atmel and Silabs (etc) have small MCUs with DAC included, that can be cheaper than external DAC peripherals.

author: bson
author_rank: Unknown
timestamp: March 22, 2019, 05:28:47 am
content: Yeah, DACs are unfortunately somewhat uncommon. I do wish more CM3/CM4 processors in modest packages (48, 64, 80 pin) had them!

author: Sigurd
author_rank: Contributor
timestamp: March 22, 2019, 07:46:58 am
content: GD32F103From Giga Devices, a chinese company with an ARM license, they are set up so you can use your STM code on them right out of the box.Edit:http://www.gigadevice.com/products/microcontrollers/gd32/arm-cortex-m4/mainstream-line/gd32f303-series/

author: MT
author_rank: Super Contributor
timestamp: March 23, 2019, 02:47:18 am
content: Quote from: ataradov on March 21, 2019, 03:29:48 pmThose SamE5 is quite good contenders or even better speced for same or lower price even so the ATSAM4S.Will look into them some more...