ATMEGA16U4-AU Atmel, ATMEGA16U4-AU Datasheet - Page 62

• Manufacturer Part Number: ATMEGA16U4-AU
• Description: MCU AVR 16K FLASH USB 44TQFP
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA16U4-AU

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 16MHz
• Connectivity: I²C, SPI, UART/USART, USB
• Peripherals: Brown-out Detect/Reset, POR, PWM, Temp Sensor, WDT
• Number Of I /o: 26
• Program Memory Size: 16KB (8K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 512 x 8
• Ram Size: 1.25K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: External
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 44-TQFP, 44-VQFP
• Processor Series: ATMEGA16x
• Core: AVR8
• Data Bus Width: 8 bit
• Data Ram Size: 1.25 KB
• Interface Type: SPI, TWI, USART
• Maximum Clock Frequency: 16 MHz
• Number Of Programmable I/os: 26
• Number Of Timers: 5
• 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: - 40 C
• On-chip Adc: 10 bit, 12 Channel
• For Use With: ATSTK600 - DEV KIT FOR AVR/AVR32ATAVRDRAGON - KIT DRAGON 32KB FLASH MEM AVRATSTK500 - PROGRAMMER AVR STARTER KIT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

9.1.1
7766F–AVR–11/10
Moving Interrupts Between Application and Boot Space
Table 9-1.
Notes:
Table 9-2
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 9-2.
Note:
The General Interrupt Control Register controls the placement of the Interrupt Vector table.
Vector
BOOTRST
No.
30
31
32
33
34
35
36
37
38
39
40
41
42
43
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
1. The Boot Reset Address is shown in
Address
Program
shows reset and Interrupt Vectors placement for the various combinations of
reset, see
Flash Section. The address of each Interrupt Vector will then be the address in this table
added to the start address of the Boot Flash Section.
means unprogrammed while “0” means programmed.
$003A
$003C
$004C
$004E
$003E
$0040
$0042
$0044
$0046
$0048
$004A
$0050
$0052
$0054
Reset and Interrupt Vectors (Continued)
Reset and Interrupt Vectors Placement
IVSEL
(2)
0
1
0
1
“Memory Programming” on page
Source
ADC
EE READY
TIMER3 CAPT
TIMER3 COMPA
TIMER3 COMPB
TIMER3 COMPC
TIMER3 OVF
TWI
SPM READY
TIMER4 COMPA
TIMER4 COMPB
TIMER4 COMPD
TIMER4 OVF
TIMER4 FPF
Reset Address
0x0000
0x0000
Boot Reset Address
Boot Reset Address
Interrupt Definition
ADC Conversion Complete
EEPROM Ready
Timer/Counter3 Capture Event
Timer/Counter3 Compare Match A
Timer/Counter3 Compare Match B
Timer/Counter3 Compare Match C
Timer/Counter3 Overflow
2-wire Serial Interface
Store Program Memory Ready
Timer/Counter4 Compare Match A
Timer/Counter4 Compare Match B
Timer/Counter4 Compare Match D
Timer/Counter4 Overflow
Timer/Counter4
Table 27-8 on page
Interrupt Vectors Start Address
0x0002
Boot Reset Address + 0x0002
0x0002
Boot Reset Address + 0x0002
346.
(1)
Fault Protection Interrupt
344. For the BOOTRST Fuse “1”
ATmega16/32U4
62