ATMEGA128A-MN Atmel, ATMEGA128A-MN Datasheet - Page 60
![IC MCU AVR 128K FLASH 64VQFN](/photos/12/13/121332/313-64-tqfp_sml.jpg)
ATMEGA128A-MN
Manufacturer Part Number
ATMEGA128A-MN
Description
IC MCU AVR 128K FLASH 64VQFN
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA128A-MN
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
EBI/EMI, I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
53
Program Memory Size
128KB (64K x 16)
Program Memory Type
FLASH
Eeprom Size
4K x 8
Ram Size
4K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
64-TQFP
Core
AVR8
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
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8151H–AVR–02/11
Table 11-1.
Notes:
Table 11-2
BOOTRST and IVSEL settings. If the program never enables an interrupt source, the interrupt
vectors are not used, and regular program code can be placed at these locations. This is also
the case if the Reset Vector is in the Application section while the interrupt vectors are in the
Boot section or vice versa.
Table 11-2.
Note:
The most typical and general program setup for the Reset and Interrupt Vector Addresses in
ATmega128A is:
Vector
BOOTRST
No.
28
29
30
31
32
33
34
35
Address LabelsCode
$0000
$0002
$0004
$0006
$0008
$000A
$000C
$000E
$0010
$0012
1
1
0
0
1. When the BOOTRST fuse is programmed, the device will jump to the Boot Loader address at
2. When the IVSEL bit in MCUCR is set, interrupt vectors will be moved to the start of the Boot
3. The Interrupts on address $0030 - $0044 do not exist in ATmega103 compatibility mode.
The Boot Reset Address is shown in
unprogrammed while “0” means programmed.
reset, see
Flash section. The address of each interrupt vector will then be address in this table added to
the start address of the boot Flash section.
Address
shows Reset and interrupt vectors placement for the various combinations of
Program
$003A
$003C
$003E
$0036
$0038
$0040
$0042
$0044
Reset and Interrupt Vectors (Continued)
Reset and Interrupt Vectors Placement
IVSEL
(3)
(3)
(3)
(3)
(3)
(3)
(3)
(3)
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
jmp
(2)
“Boot Loader Support – Read-While-Write Self-Programming” on page
0
1
0
1
Source
TIMER3 COMPB
TIMER3 COMPC
TIMER3 OVF
USART1, RX
USART1, UDRE
USART1, TX
TWI
SPM READY
RESET
EXT_INT0
EXT_INT1
EXT_INT2
EXT_INT3
EXT_INT4
EXT_INT5
EXT_INT6
EXT_INT7
TIM2_COMP ; Timer2 Compare Handler
Reset Address
$0000
$0000
Boot Reset Address
Boot Reset Address
Comments
; Reset Handler
; IRQ0 Handler
; IRQ1 Handler
; IRQ2 Handler
; IRQ3 Handler
; IRQ4 Handler
; IRQ5 Handler
; IRQ6 Handler
; IRQ7 Handler
Table 25-6 on page
Interrupt Definition
Timer/Counter3 Compare Match B
Timer/Counter3 Compare Match C
Timer/Counter3 Overflow
USART1, Rx Complete
USART1 Data Register Empty
USART1, Tx Complete
Two-wire Serial Interface
Store Program Memory Ready
$0002
Interrupt Vectors Start Address
$0002
Boot Reset Address + $0002
Boot Reset Address + $0002
288. For the BOOTRST fuse “1” means
ATmega128A
277.
60
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