> On Aug 31, 1:09 am, DJ Delorie<d...@delorie.com> wrote:
>> The new RX/62N from Renesas has all that, but it might be a bit pricey...
> I don't think those are available yet, are they?
You can get samples from FEs if you ask, I think.
Reply by Aaron Clarke●August 31, 20102010-08-31
On Aug 31, 11:34=A0am, "abrous" <abrous3d@n_o_s_p_a_m.hotmail.com>
wrote:
> >On Aug 31, 1:09=3DA0am, DJ Delorie <d...@delorie.com> wrote:
> >> The new RX/62N from Renesas has all that, but it might be a bit
> pricey...
> >I don't think those are available yet, are they?
>
> >I know you can register to receive an RX62N RDK when it's released (by
> >registering for a free RX610).
>
> >http://blog.embeddedcoding.com/2010/08/renesas-offers-free-evaluation...
> >or.html
>
> >Aaron
>
> Thanks for the reply guys.
> After a short research I am going towards NXP1778 or Luminary micro
> LM3S9B90.
> They are both more than enough for my application. LPC's strong point is
> that I am already familiar with LPC series but it seems that it is still
> under development.
> Luminary micro is completely new for me. I like its complete ethernet
> module (MAC + PHY !!). This gives this device a serious cost advantage
> because you dont need PHY. The 5V tolerant I/O its also a plus for me. Al=
so
> I saw that LM3S has a ROM device driver library - I am wondering if its
> supported by IAR tools.
> Does anyone of you guys have any hands on experience with this device ?
> What about its price (for 3-5K) and availability.
>
> Thanks in advance.
>
> --------------------------------------- =A0 =A0 =A0 =A0
> Posted throughhttp://www.EmbeddedRelated.com
Thanks for the reply guys.
After a short research I am going towards NXP1778 or Luminary micro
LM3S9B90.
They are both more than enough for my application. LPC's strong point is
that I am already familiar with LPC series but it seems that it is still
under development.
Luminary micro is completely new for me. I like its complete ethernet
module (MAC + PHY !!). This gives this device a serious cost advantage
because you dont need PHY. The 5V tolerant I/O its also a plus for me. Also
I saw that LM3S has a ROM device driver library - I am wondering if its
supported by IAR tools.
Does anyone of you guys have any hands on experience with this device ?
What about its price (for 3-5K) and availability.
Thanks in advance.
---------------------------------------
Posted through http://www.EmbeddedRelated.com
Reply by Aaron Clarke●August 31, 20102010-08-31
On Aug 31, 1:09=A0am, DJ Delorie <d...@delorie.com> wrote:
> The new RX/62N from Renesas has all that, but it might be a bit pricey...
>
> - Computing power : medium (mega128 was on the edge but ok - LPC2468 is
> overkill)
> - External memory interface (for SRAM)
> - Internal RAM memory : dont care
> - Internal Flash : 128 - 512KB
> - A/D : 8 channels >= 10bit
> - SPI : 1 or more
> - UART : 2 or more
> - Package : TQFP or other (No BGA)
> - Ethernet MAC : its a very important plus
> - USB dev : I'd like to have it but I can live without it
> - I/O > 40
> - C programming tools available
I'm curious - why these two requirements together with low cost, since
they all fight? External memory bus adds a lot of pins that are then
unusable as GPIO. The cost sweet spot is found in all-in-one chips.
So, how much SRAM do your designs need, or is it really that you are
using memory-mapped I/O? If you are using SRAM for instance to store
the "virtual tape" before sorting and printing at the end of an order,
could you not use an external serial flash device instead?
Reply by Aaron Clarke●August 30, 20102010-08-30
On Aug 29, 9:11=A0pm, "abrous" <abrous3d@n_o_s_p_a_m.hotmail.com> wrote:
> Hi to all,
>
> I work in POS and cash registers design industry since 1995.
> I use Atmel AVR ATMega128 for almost a decade for the most of my designs.
> Because of lack of features but mostly because of the rising prices and
> availability issues recently I decided to move to another MCU (preferably
> from =A0different brand). I've spent some days looking around and now I a=
m a
> little bit confused. So,I'd like to have your expert advice and some idea=
s.
> My requirements are :
>
> - Computing power : medium (mega128 was on the edge but ok - LPC2468 is
> overkill)
> - External memory interface (for SRAM)
> - Internal RAM memory : dont care
> - Internal Flash : 128 - 512KB
> - A/D : 8 channels =A0>=3D 10bit
> - SPI : 1 or more
> - UART : 2 or more
> - Package : TQFP or other =A0(No BGA)
> - Ethernet MAC : its a very important plus
> - USB dev : I'd like to have it but I can live without it
> - I/O > 40
> - C programming tools available
> Everything else its a plus - no rocket science here :-)
>
> I was thinking about NXP LPC2468 but it seems a bit expensive for my
> applications (10,3E/K). Atmel XMega256 is a low cost chip and I am famili=
ar
> with it but I worry about the availability since I am not a "big" custome=
r
> (3-4Kparts/year). What do you think guys ?
>
> Thanks in advance.. =A0 =A0
>
> --------------------------------------- =A0 =A0 =A0 =A0
> Posted throughhttp://www.EmbeddedRelated.com
"Michael Karas" <mkaras@carouselDASHdesign.com> wrote in message
news:MPG.26e4c4c27c5d9c4989696@news.eternal-september.org...
>
> Take a strong look at the LPC1768 from NXP. This part is about half the
> price for the '2468 and is available in a package that is more to your
> liking. Here is the summary feature list:
>
Note that the LPC1768 doesn't have an external RAM interface as requested by
the OP. However, the newer LPC177x MCUs do have an external memory
controller. These are currently in development so might not be suitable if
needed in a hurry:
http://ics.nxp.com/products/lpc1000/all/~LPC1776/
--
Chris Burrows
CFB Software
Astrobe: LPC2xxx Oberon-07 Development System
http://www.astrobe.com
Reply by Michael Karas●August 30, 20102010-08-30
In article <V6-dnXewKpbVmObRnZ2dnUVZ_vSdnZ2d@giganews.com>,
abrous3d@n_o_s_p_a_m.hotmail.com says...
> LPC2468
>
Take a strong look at the LPC1768 from NXP. This part is about half the
price for the '2468 and is available in a package that is more to your
liking. Here is the summary feature list:
- ARM Cortex-M3 up to 100 MHz
- Nested Vectored Interrupt Controller
- 512 kB on-chip flash
- ISP and IAP support via bootloader
- 32kB of SRAM local to CPU
- Two 16 kB SRAM blocks for high performance I/O
- Eight channel DMA controller
- Split bus allows high throughput between the CPU and DMA.
- Ethernet MAC with RMII interface
- USB 2.0 full-speed device/Host/OTG controller
- Four UARTs with baud rate generation
- CAN 2.0B controller with two channels
- SPI controller
- Two SSP controllers with multi-protocol support
- Three enhanced I2C bus interfaces
- I2S (Inter-IC Sound) interface for digital audio i/o
- 70 General Purpose I/O
- 12-bit Eight channel ADC
- 10-bit DAC with timer and DMA
- Four general purpose timers/counters
- One motor control PWM with /three-phase motor support
- Quadrature encoder interface
- One standard PWM/timer
- RTC with a dedicated RTC oscillator
- 20 bytes of battery-powered backup registers
- WatchDog Timer
- ARM Cortex-M3 system tick timer
- Repetitive interrupt timer
- JTAG test/debug interface
- Emulation trace module
- Integrated Power Management Unit
- Low power modes: Sleep, Deep-sleep, Power-down, and Deep power-down
- Single 3.3 V power supply
- Four external interrupt inputs
- Non-maskable Interrupt
- Sys Clock output function
- Wake-up Interrupt Controller
- Brownout detector
- Power-On Reset
- Crystal oscillator 1 MHz to 25 MHz.
- 4 MHz internal RC oscillator / 1 % accuracy
- USB PLL
- Code Read Protection security
- Unique device serial number for ID
- Available 100-pin LQFP package
Way more capable than that ATMega128 and not so much more price.
--
Michael Karas
Carousel Design Solutions
http://www.carousel-design.com