ATMEGA406-1AAU Atmel, ATMEGA406-1AAU Datasheet - Page 191
ATMEGA406-1AAU
Manufacturer Part Number
ATMEGA406-1AAU
Description
IC AVR MCU 40K 1MHZ 48LQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA406-1AAU
Core Processor
AVR
Core Size
8-Bit
Speed
1MHz
Connectivity
I²C
Peripherals
POR, WDT
Number Of I /o
18
Program Memory Size
40KB (20K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
4 V ~ 25 V
Data Converters
A/D 10x12b
Oscillator Type
Internal
Operating Temperature
-30°C ~ 85°C
Package / Case
48-LQFP
Processor Series
ATMEGA48x
Core
AVR8
Data Bus Width
8 bit
Data Ram Size
2 KB
Interface Type
2-Wire
Maximum Clock Frequency
1 MHz
Number Of Programmable I/os
18
Number Of Timers
2
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
3rd Party Development Tools
EWAVR, EWAVR-BL
Development Tools By Supplier
ATAVRDRAGON, ATSTK500, ATSTK600, ATAVRISP2, ATAVRONEKIT
Minimum Operating Temperature
- 30 C
Cpu Family
ATmega
Device Core
AVR
Device Core Size
8b
Frequency (max)
1MHz
Total Internal Ram Size
2KB
# I/os (max)
18
Number Of Timers - General Purpose
2
Operating Supply Voltage (typ)
5/9/12/15/18/24V
Operating Supply Voltage (max)
25V
Operating Supply Voltage (min)
4V
On-chip Adc
10-chx12-bit
Instruction Set Architecture
RISC
Operating Temp Range
-30C to 85C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
48
Package Type
LQFP
Controller Family/series
AVR MEGA
No. Of I/o's
18
Eeprom Memory Size
512Byte
Ram Memory Size
2KB
Cpu Speed
1MHz
Rohs Compliant
Yes
For Use With
770-1007 - ISP 4PORT ATMEL AVR MCU SPI/JTAG770-1005 - ISP 4PORT FOR ATMEL AVR MCU JTAG770-1004 - ISP 4PORT FOR ATMEL AVR MCU SPI
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ATMEGA406-1AAU
Manufacturer:
AT
Quantity:
20 000
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27.7.11
27.7.12
2548E–AVR–07/06
Programming Time for Flash when Using SPM
Simple Assembly Code Example for a Boot Loader
The Fast RC Oscillator is used to time Flash accesses.
ming time for Flash accesses from the CPU.
Table 27-6.
Flash write (Page Erase, Page Write, and
write Lock bits by SPM)
.equ PAGESIZEB = PAGESIZE*2
.org SMALLBOOTSTART
Write_page:
Wrloop:
;-the routine writes one page of data from RAM to Flash
; the first data location in RAM is pointed to by the Y pointer
; the first data location in Flash is pointed to by the Z-pointer
;-error handling is not included
;-the routine must be placed inside the Boot space
; (at least the Do_spm sub routine). Only code inside NRWW section
; can be read during Self-Programming (Page Erase and Page Write).
;-registers used: r0, r1, temp1 (r16), temp2 (r17), looplo (r24),
; loophi (r25), spmcrval (r20)
; storing and restoring of registers is not included in the routine
; register usage can be optimized at the expense of code size
;-It is assumed that either the interrupt table is moved to the
; Boot loader section or that the interrupts are disabled.
; Page Erase
ldi
call Do_spm
; re-enable the RWW section
ldi
call Do_spm
; transfer data from RAM to Flash page buffer
ldi
ldi
ld
ld
ldi
call Do_spm
adiw ZH:ZL, 2
sbiw loophi:looplo, 2
brne Wrloop
; execute Page Write
subi ZL, low(PAGESIZEB)
sbci ZH, high(PAGESIZEB)
ldi
call Do_spm
; re-enable the RWW section
spmcrval, (1<<PGERS) | (1<<SPMEN)
spmcrval, (1<<RWWSRE) | (1<<SPMEN)
looplo, low(PAGESIZEB)
loophi, high(PAGESIZEB)
r0, Y+
r1, Y+
spmcrval, (1<<SPMEN)
spmcrval, (1<<PGWRT) | (1<<SPMEN)
SPM Programming Time
Symbol
;PAGESIZEB is page size in BYTES, not words
;init loop variable
;not required for PAGESIZEB<=256
;use subi for PAGESIZEB<=256
;restore pointer
;not required for PAGESIZEB<=256
Min Programming Time
3.7 ms
Table 27-6
shows the typical program-
Max Programming Time
ATmega406
4.5 ms
191
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