ATmega1284P Atmel Corporation, ATmega1284P Datasheet - Page 139

• Manufacturer Part Number: ATmega1284P
• Manufacturer: Atmel Corporation

Specifications of ATmega1284P

• Flash (kbytes): 128 Kbytes
• Pin Count: 44
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 16
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 32
• Ext Interrupts: 32
• Usb Speed: No
• Usb Interface: No
• Spi: 3
• Twi (i2c): 1
• Uart: 2
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 15
• Analog Comparators: 1
• Resistive Touch Screen: No
• Temp. Sensor: No
• Crypto Engine: No
• Sram (kbytes): 16
• Eeprom (bytes): 4096
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: Yes
• Temp. Range (deg C): -40 to 85
• I/o Supply Class: 1.8 to 5.5
• Operating Voltage (vcc): 1.8 to 5.5
• Fpu: No
• Mpu / Mmu: no / no
• Timers: 3
• Output Compare Channels: 6
• Input Capture Channels: 1
• Pwm Channels: 6
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

16.11.13 TIMSK3 – Timer/Counter3 Interrupt Mask Register
16.11.14 TIFR1 – Timer/Counter1 Interrupt Flag Register
8272C–AVR–06/11
• Bit 0 – TOIE1: Timer/Counter1, Overflow Interrupt Enable
When this bit is written to one, and the I-flag in the Status Register is set (interrupts globally
enabled), the Timer/Counter1 Overflow interrupt is enabled. The corresponding Interrupt Vector
(See Section “11.3” on page
• Bit 7:6 – Reserved
These bits are unused and will always read as zero.
• Bit 5 – ICIE3: Timer/Counter3, Input Capture Interrupt Enable
When this bit is written to one, and the I-flag in the Status Register is set (interrupts globally
enabled), the Timer/Counter1 Input Capture interrupt is enabled. The corresponding Interrupt
Vector (See “Interrupts” on page 61) is executed when the ICF3 Flag, located in TIFR3, is set.
• Bit 4:3 – Reserved
These bits are unused and will always read as zero.
• Bit 2 – OCIE3B: Timer/Counter3, Output Compare B Match Interrupt Enable
When this bit is written to one, and the I-flag in the Status Register is set (interrupts globally
enabled), the Timer/Counter3 Output Compare B Match interrupt is enabled. The corresponding
Interrupt Vector (See “Interrupts” on page 61) is executed when the OCF3B Flag, located in
TIFR3, is set.
• Bit 1 – OCIE3A: Timer/Counter3, Output Compare A Match Interrupt Enable
When this bit is written to one, and the I-flag in the Status Register is set (interrupts globally
enabled), the Timer/Counter3 Output Compare A Match interrupt is enabled. The corresponding
Interrupt Vector (See “Interrupts” on page 61) is executed when the OCF3A Flag, located in
TIFR3, is set.
• Bit 0 – TOIE3: Timer/Counter3, Overflow Interrupt Enable
When this bit is written to one, and the I-flag in the Status Register is set (interrupts globally
enabled), the Timer/Counter3 Overflow interrupt is enabled. The corresponding Interrupt Vector
(See “Watchdog Timer” on page 55) is executed when the TOV3 Flag, located in TIFR3, is set.
• Bit 7:6 – Reserved
These bits are unused and will always read as zero.
Bit
(0x71)
Read/Write
Initial Value
Bit
0x16 (0x36)
Read/Write
Initial Value
ATmega164A/PA/324A/PA/644A/PA/1284/P
R
R
7
–
0
7
–
0
R
6
–
0
R
6
–
0
55) is executed when the TOV1 Flag, located in TIFR1, is set.
ICIE3
R/W
ICF1
R/W
5
0
5
0
R
4
–
0
R
4
–
0
R
3
–
0
R
3
–
0
OCIE3B
OCF1B
R/W
R/W
2
0
2
0
OCIE3A
OCF1A
R/W
R/W
1
0
1
0
TOIE3
TOV1
R/W
R/W
0
0
0
0
TIMSK3
TIFR1
139