AT90PWM81 Atmel Corporation, AT90PWM81 Datasheet - Page 246
AT90PWM81
Manufacturer Part Number
AT90PWM81
Description
Manufacturer
Atmel Corporation
Datasheet
1.AT90PWM161.pdf
(325 pages)
Specifications of AT90PWM81
Flash (kbytes)
8 Kbytes
Pin Count
20
Max. Operating Frequency
16 MHz
Cpu
8-bit AVR
Hardware Qtouch Acquisition
No
Max I/o Pins
20
Ext Interrupts
3
Usb Speed
No
Usb Interface
No
Spi
1
Graphic Lcd
No
Video Decoder
No
Camera Interface
No
Adc Channels
11
Adc Resolution (bits)
10
Adc Speed (ksps)
125
Analog Comparators
3
Resistive Touch Screen
No
Dac Channels
1
Dac Resolution (bits)
10
Temp. Sensor
Yes
Crypto Engine
No
Sram (kbytes)
0.25
Eeprom (bytes)
512
Self Program Memory
YES
Dram Memory
No
Nand Interface
No
Picopower
No
Temp. Range (deg C)
-40 to 125
I/o Supply Class
2.7 to 5.5
Operating Voltage (vcc)
2.7 to 5.5
Fpu
No
Mpu / Mmu
no / no
Timers
1
Output Compare Channels
8
Input Capture Channels
1
Pwm Channels
6
32khz Rtc
No
Calibrated Rc Oscillator
Yes
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20.7.14
246
AT90PWM81
Boot Loader Parameters
In
given.
Table 20-7.
Note:
Table 20-8.
BOOTSZ1
Section
Read-While-Write section (RWW)
No Read-While-Write section (NRWW)
Table 20-7
Do_spm:
Wait_spm:
Wait_ee:
1
1
0
0
rjmp Return
; check for previous SPM complete
in
sbrc temp1, SPMEN
rjmp Wait_spm
; input: spmcrval determines SPM action
; disable interrupts if enabled, store status
in
cli
; check that no EEPROM write access is present
sbic EECR, EEPE
rjmp Wait_ee
; SPM timed sequence
out
spm
; restore SREG (to enable interrupts if originally enabled)
out
ret
The different BOOTSZ Fuse configurations are shown in
temp1, SPMCSR
temp2, SREG
SPMCSR, spmcrval
SREG, temp2
through
BOOTSZ0
Boot Size Configuration
Read-While-Write Limit
1
0
1
0
Table
Boot
Size
128
words
256
words
512
words
1024
words
20-9, the parameters used in the description of the self programming are
Pages
16
32
4
8
Application
Flash
Section
0x000 - 0xF7F
0x000 - 0xEFF
0x000 - 0xDFF
0x000 - 0xBFF
Figure
Boot
Loader
Flash
Section
0xF80 -
0xFFF
0xF00 -
0xFFF
0xE00 -
0xFFF
0xC00 -
0xFFF
20-2.
Pages
96
32
End
Application
Section
0xF7F
0xEFF
0xDFF
0xBFF
Address
0x000 - 0xBFF
0xC00 - 0xFFF
7734P–AVR–08/10
Boot Reset
Address (Start
Boot Loader
Section)
0xF80
0xF00
0xE00
0xC00
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