Reply by Ulf Samuelsson●January 23, 20082008-01-23
"steve" <bungalow_steve@yahoo.com> skrev i meddelandet
news:510a0976-8740-4c93-b5a2-a848f476efd9@y5g2000hsf.googlegroups.com...
On Jan 22, 7:55 am, Andreas Schweiger <andreas.schwei...@arcor.de>
wrote:
> Hi Ulf,
>
> > There will soon be an ATmega1284P with
> > 128kB Flash
> > 16 kB SRAM
> > Power Down current = 0,6uA with 32 kHz clock enabled.
> > When you are only running the RTC, you can enable the CPU clock
> > divider to run at low speed.
> > At ~32 kHz the interrupt to run the RTC date/time keeping will
> > add about 0,1uA to the average power consumption.
>
> > What you need is an power management circuit which will
> > automatically switch over to the battery when the mains disappears.
> > Maybe this is two diodes...
>
> This sounds like the device I need!
> 16kByte is enough and all included is so cool.
> Do you know when it will be on the market?
>
> Thanks,
> Andreas
FWIW atmel is extremely optimisitic concerning new silicon, SAM7L,
xmegaAVR are good examples, think another 6-12 months for samples and
2 years for production quantities, but you never know they could
surprise you
==> That is the charm with silicon, you know when you get next rev of the
silicon
but you do not know if that silicon works or not, and once in
production
you do not know if the next batch is going to yield or not.
I never promise any dates, I just give "best case" availability.
--
Best Regards,
Ulf Samuelsson
This is intended to be my personal opinion which may,
or may not be shared by my employer Atmel Nordic AB
Reply by steve●January 23, 20082008-01-23
On Jan 22, 7:55=A0am, Andreas Schweiger <andreas.schwei...@arcor.de>
wrote:
> Hi Ulf,
>
> > There will soon be an ATmega1284P with
> > 128kB Flash
> > 16 kB SRAM
> > Power Down current =3D 0,6uA with 32 kHz clock enabled.
> > When you are only running the RTC, you can enable the CPU clock
> > divider to run at low speed.
> > At ~32 kHz the interrupt to run the RTC date/time keeping will
> > add about 0,1uA to the average power consumption.
>
> > What you need is an power management circuit which will
> > automatically switch over to the battery when the mains disappears.
> > Maybe this is two diodes...
>
> This sounds like the device I need!
> 16kByte is enough and all included is so cool.
> Do you know when it will be on the market?
>
> Thanks,
> Andreas
FWIW atmel is extremely optimisitic concerning new silicon, SAM7L,
xmegaAVR are good examples, think another 6-12 months for samples and
2 years for production quantities, but you never know they could
surprise you
Reply by linnix●January 23, 20082008-01-23
On Jan 22, 9:51 pm, "Ulf Samuelsson" <u...@a-t-m-e-l.com> wrote:
> "Andreas Schweiger" <andreas.schwei...@arcor.de> skrev i meddelandetnews:4795e7bc$0$25381$9b4e6d93@newsspool4.arcor-online.net...
>
>
>
> > Hi Ulf,
>
> >> There will soon be an ATmega1284P with
> >> 128kB Flash
> >> 16 kB SRAM
> >> Power Down current = 0,6uA with 32 kHz clock enabled.
> >> When you are only running the RTC, you can enable the CPU clock
> >> divider to run at low speed.
> >> At ~32 kHz the interrupt to run the RTC date/time keeping will
> >> add about 0,1uA to the average power consumption.
>
> >> What you need is an power management circuit which will
> >> automatically switch over to the battery when the mains disappears.
> >> Maybe this is two diodes...
>
> > This sounds like the device I need!
> > 16kByte is enough and all included is so cool.
> > Do you know when it will be on the market?
>
> > Thanks,
> > Andreas
>
> There is internal silicon available, but I do not know the status.
> Be friendly with your local Atmel contact!
>
> --
> Best Regards,
> Ulf Samuelsson
> This is intended to be my personal opinion which may,
> or may not be shared by my employer Atmel Nordic AB
Do you know where I can get the die layout (and samples) for
ATmega169PV? I can't get any response from my local Atmel contact.
May be I should move to Norway!
Reply by Ulf Samuelsson●January 23, 20082008-01-23
"Andreas Schweiger" <andreas.schweiger@arcor.de> skrev i meddelandet
news:4795e7bc$0$25381$9b4e6d93@newsspool4.arcor-online.net...
> Hi Ulf,
>
>> There will soon be an ATmega1284P with
>> 128kB Flash
>> 16 kB SRAM
>> Power Down current = 0,6uA with 32 kHz clock enabled.
>> When you are only running the RTC, you can enable the CPU clock
>> divider to run at low speed.
>> At ~32 kHz the interrupt to run the RTC date/time keeping will
>> add about 0,1uA to the average power consumption.
>>
>> What you need is an power management circuit which will
>> automatically switch over to the battery when the mains disappears.
>> Maybe this is two diodes...
>
> This sounds like the device I need!
> 16kByte is enough and all included is so cool.
> Do you know when it will be on the market?
>
> Thanks,
> Andreas
There is internal silicon available, but I do not know the status.
Be friendly with your local Atmel contact!
--
Best Regards,
Ulf Samuelsson
This is intended to be my personal opinion which may,
or may not be shared by my employer Atmel Nordic AB
Reply by Andreas Schweiger●January 22, 20082008-01-22
Hi Ulf,
> There will soon be an ATmega1284P with
> 128kB Flash
> 16 kB SRAM
> Power Down current = 0,6uA with 32 kHz clock enabled.
> When you are only running the RTC, you can enable the CPU clock
> divider to run at low speed.
> At ~32 kHz the interrupt to run the RTC date/time keeping will
> add about 0,1uA to the average power consumption.
>
> What you need is an power management circuit which will
> automatically switch over to the battery when the mains disappears.
> Maybe this is two diodes...
This sounds like the device I need!
16kByte is enough and all included is so cool.
Do you know when it will be on the market?
Thanks,
Andreas
Reply by Ulf Samuelsson●January 21, 20082008-01-21
> i am looking for a new Micro for a private project:
>
> Needed Features:
>
> - Performance of a 12MHz 80C535 is enough
> - 2 serial Ports
> - 128kB Flash
> - Battery bufferd SRAM on board (16k and more)
> - RTC
> - 4 8 or 16bit Timers
> - GPIO's for Key's (8), LCD (Standart 4 bit and control) and LED (8)
> - SD card interface
>
> Most cruical is that a free compiler is available since I dont want to pay
> another system.
> The source is mainly written HW independent but I have no OS.
> I would lie to use one but development time in spare time is limited so I
> rather would program it plain again.
>
> I looked at ATMELS ATmega128 but no bufferd SRAM and RTC.
>
> An suggestions?
>
> Thanks a lot!
>
> Andreas
There will soon be an ATmega1284P with
128kB Flash
16 kB SRAM
Power Down current = 0,6uA with 32 kHz clock enabled.
When you are only running the RTC, you can enable the CPU clock
divider to run at low speed.
At ~32 kHz the interrupt to run the RTC date/time keeping will
add about 0,1uA to the average power consumption.
What you need is an power management circuit which will
automatically switch over to the battery when the mains disappears.
Maybe this is two diodes...
--
Best Regards,
Ulf Samuelsson
This is intended to be my personal opinion which may,
or may not be shared by my employer Atmel Nordic AB
Reply by GMM50●January 20, 20082008-01-20
On Jan 18, 12:20 pm, Andreas Schweiger <andreas.schwei...@gmx.de>
wrote:
> Hi All,
>
> i am looking for a new Micro for a private project:
>
> Needed Features:
>
> - Performance of a 12MHz 80C535 is enough
> - 2 serial Ports
> - 128kB Flash
> - Battery bufferd SRAM on board (16k and more)
> - RTC
> - 4 8 or 16bit Timers
> - GPIO's for Key's (8), LCD (Standart 4 bit and control) and LED (8)
> - SD card interface
>
> Most cruical is that a free compiler is available since I dont want to
> pay another system.
> The source is mainly written HW independent but I have no OS.
> I would lie to use one but development time in spare time is limited so
> I rather would program it plain again.
>
> I looked at ATMELS ATmega128 but no bufferd SRAM and RTC.
>
> An suggestions?
>
> Thanks a lot!
>
> Andreas
Look at www.netburner.com They have several development systems that
should suit your needs. The software is great. C/C++ and RTOS
george
Reply by Friedrich Lobenstock●January 20, 20082008-01-20
linnix wrote on 20/01/08 03:48 MET:
>
> I am not saying that you should stream data into EEPROM directly.
> Before going into power down or standy mode, copy critical data from
> SRAM to EEPROM.
Agreed, I just wanted to point out if using EEPROM you very well have to
take your write/erase pattern into account when calculating the max.
obtainable life span.
--
MfG / Regards
Friedrich Lobenstock
Wow - SPI SRAM. I thought that had long since vanished off the planet,
I see it came from NanoAmp Solutions, Inc
-jg
Reply by steve●January 19, 20082008-01-19
On Jan 19, 9:07=A0am, Andreas Schweiger <andreas.schwei...@arcor.de>
wrote:
> Hi,>> - Battery bufferd SRAM on board (16k and more)
>
> > Easier if you can settle for 8K
>
> The application will have to store data which can get more and more in
> time (musical allpiance).
> So 8k is the adsolut minimum.
>
> >> I looked at ATMELS ATmega128 but no bufferd SRAM and RTC.
>
> > Sure there is, at least for some AVRs. =A0You can run it in power saving=
> > mode with the RTC clock running. =A0You should copy critical SRAM data
> > into EEPROM anyway. =A0Battery SRAMs are for lazy designers.
>
> Well, I need the SRAM for storing application data and that data can
> grow by input of the user.
> Storage (SD or other cards) I dont have so I need to hold the data in
> battery buffered SRAM since I have a power supply which can (of course)
> be switched off.
> Thats why I use byttery back up.
>
> Thanks,
>
> Andreas