AVR Freaks

Certainly gives the impression that the ATtiny's (xtiny's) are limiting out at 16KB and that 32KB, and larger?, will be classified as ATMega, though that conflicts with what Jan (je_ruud) wrote here.  It would be nice to see an actual roadmap!  Microchip|Atmel, are you listening?

 

Seems to also confirm comments in other threads, made by Microchip|Atmel personnel, that indicated there would be no Xplained Pro based on an ATtiny1616 as they are most likely going to produce an Xplained Pro 32xx or 42xx instead. 

 

EDIT: je_ruud

 

Or, maybe, what pins out?

 

Jim

From iom4808.h:

#define MAPPED_EEPROM_START     (EEPROM_START)
#define MAPPED_EEPROM_SIZE      (EEPROM_SIZE)
#define MAPPED_EEPROM_PAGE_SIZE (EEPROM_PAGE_SIZE)
#define MAPPED_EEPROM_END       (MAPPED_EEPROM_START + MAPPED_EEPROM_SIZE - 1)

#define FUSES_START     (0x1280)
#define FUSES_SIZE      (10)
#define FUSES_PAGE_SIZE (64)
#define FUSES_END       (FUSES_START + FUSES_SIZE - 1)

#define INTERNAL_SRAM_START     (0x2800)
#define INTERNAL_SRAM_SIZE      (6144)
#define INTERNAL_SRAM_PAGE_SIZE (0)
#define INTERNAL_SRAM_END       (INTERNAL_SRAM_START + INTERNAL_SRAM_SIZE - 1)

#define IO_START     (0x0000)
#define IO_SIZE      (4352)
#define IO_PAGE_SIZE (0)
#define IO_END       (IO_START + IO_SIZE - 1)

#define LOCKBITS_START     (0x128A)
#define LOCKBITS_SIZE      (1)
#define LOCKBITS_PAGE_SIZE (64)
#define LOCKBITS_END       (LOCKBITS_START + LOCKBITS_SIZE - 1)

#define MAPPED_PROGMEM_START     (0x4000)
#define MAPPED_PROGMEM_SIZE      (49152)
#define MAPPED_PROGMEM_PAGE_SIZE (128)
#define MAPPED_PROGMEM_END       (MAPPED_PROGMEM_START + MAPPED_PROGMEM_SIZE - 1

 

Hmm, memory mapped FLASH.

48-pin QFN/TQFP! Why? It doesn't exist in my PCB package so I will need to make one up if ever I want use them chips.
 

Well I AM semiretired, so don't really care much for the extra stress.

 

And 0.5mm is just about out of my visual comfort, I can do it if I have to otherwise it's all up to the younger generation.

 

Just finished testing and calibrating 500 boards, I can now restart on the next crop of vegies for winter. Much less stressful.

Interesting chips. A quick datasheet skim shows...

 

3/4 USARTs, you even get 3 in the 28-pin SSOP

5V operation

No external high-speed crystal option. It's 32k or ext cll only

Internal 16MHz or 20MHz, fuse selectable

The dataspace mapped code implies that 48k will probably be the code limit

6k SRAM

11 choices of main clock prescaler

 

 

[E2A]

Hmmm, no PTC channels in a clear distinction to the tiny1 series.

PTC?  don't ya just love TLA's! 

 

 

Jim

 

 

For not much money they could put a crystal oscillator on the board.

 

Surprisingly cheap in quantity and from China.

data sheet sec 7.5.6:

For a write operation, the low byte of the 16-bit register must be written before the high byte. ??!!??

 

Is this chip different than other AVR chips (such as a mega88pa):

To do a 16-bit write, the high byte must be written before the low byte. For a 16-bit read, the low byte must be read

before the high byte.

 

Not sure if this means anything...maybe it implies a direct write, rather than a sequence of steps...I hope the program can write to the eeprom1

 

Well, one is xplained "pro", the other "mini".

what does that mean?  $38 vs $9...what do you get for the difference?