ATtiny84 Atmel Corporation, ATtiny84 Datasheet - Page 63

• Manufacturer Part Number: ATtiny84
• Manufacturer: Atmel Corporation

Specifications of ATtiny84

• Flash (kbytes): 8 Kbytes
• Pin Count: 14
• Max. Operating Frequency: 20 MHz
• Cpu: 8-bit AVR
• # Of Touch Channels: 6
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 12
• Ext Interrupts: 12
• Usb Speed: No
• Usb Interface: No
• Spi: 1
• Twi (i2c): 1
• 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: Yes
• Crypto Engine: No
• Sram (kbytes): 0.5
• Eeprom (bytes): 512
• Self Program Memory: YES
• Dram Memory: No
• Nand Interface: No
• Picopower: No
• 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: 2
• Output Compare Channels: 4
• Input Capture Channels: 1
• Pwm Channels: 4
• 32khz Rtc: No
• Calibrated Rc Oscillator: Yes

8006K–AVR–10/10
• Port A, Bit 6 – ADC6/DI/SDA/MOSI/OC1A/PCINT6
• Port A, Bit 7 – ADC7/OC0B/ICP1/PCINT7
Table 10-4
shown in
Table 10-4.
Signal
Name
PUOE
PUOV
DDOE
DDOV
PVOE
PVOV
PTOE
DIEOE
DIEOV
DI
AIO
• ADC6: Analog to Digital Converter, Channel 6
• SDA: Two-wire mode Serial Interface Data.
• DI: Data Input in USI Three-wire mode. USI Three-wire mode does not override normal port
• MOSI: Master Data output, Slave Data input for SPI channel. When the SPI is enabled as a
• OC1A, Output Compare Match output: The PA6 pin can serve as an external output for the
• PCINT6: Pin Change Interrupt source 6. The PA6 pin can serve as an external interrupt
• ADC7: Analog to Digital Converter, Channel 7
• OC0B, Output Compare Match output: The PA7 pin can serve as an external output for the
• ICP1, Input Capture Pin: The PA7 pin can act as an Input Capture Pin for Timer/Counter1.
• PCINT7: Pin Change Interrupt source 7. The PA7 pin can serve as an external interrupt
functions, so pin must be configure as an input for DI function.
Slave, this pin is configured as an input regardless of the setting of DDA6. When the SPI is
enabled as a Master, the data direction of this pin is controlled by DDA6. When the pin is
forced by the SPI to be an input, the pull-up can still be controlled by the PORTA6 bit.
Timer/Counter1 Compare Match A. The pin has to be configured as an output (DDA6 set
(one)) to serve this function. This is also the output pin for the PWM mode timer function.
source for pin change interrupt 0.
Timer/Counter0 Compare Match B. The pin has to be configured as an output (DDA7 set
(one)) to serve this function. This is also the output pin for the PWM mode timer function.
source for pin change interrupt 0.
Figure 10-5 on page
ADC7 Input
PA7/ADC7/OC0B/ICP1/
PCINT7
0
0
0
0
OC0B enable
OC0B
0
PCINT7 • PCIE0 + ADC7D
PCINT7/ICP1 Input
PCINT7 • PCIE0
and
Overriding Signals for Alternate Functions in PA7:PA5
Table 10-6
relate the alternate functions of Port A to the overriding signals
59.
PA6/ADC6/DI/SDA/MOSI/
OC1A/ PCINT6
0
0
USIWM1
(SDA + PORTA6) • DDA6
(USIWM1 • DDA6) +
OC1A enable
( USIWM1• DDA6) • OC1A
0
USISIE + (PCINT6 •
PCIE0) + ADC6D
USISIE + PCINT7 • PCIE0
DI/SDA/PCINT6 Input
ADC6 Input
.
.
PA5/ADC5/MISO/DO/
OC1B/ PCINT5
0
0
0
0
(USIWM1 • USIWM0) + OC1B
enable
USIWM1 • USIWM0 • DO +
(USIWM1 + USIWM0) • OC1B
0
PCINT5 • PCIE + ADC5D
PCINT5 • PCIE
PCINT5 Input
ADC5 Input
ATtiny24/44/84
63