ATtiny87 Atmel Corporation, ATtiny87 Datasheet - Page 78

• Manufacturer Part Number: ATtiny87
• Manufacturer: Atmel Corporation

Specifications of ATtiny87

• Flash (kbytes): 8 Kbytes
• Pin Count: 20
• Max. Operating Frequency: 16 MHz
• Cpu: 8-bit AVR
• Hardware Qtouch Acquisition: No
• Max I/o Pins: 16
• Ext Interrupts: 16
• Usb Speed: No
• Usb Interface: No
• Spi: 2
• Twi (i2c): 1
• Uart: 1
• Lin: 1
• Graphic Lcd: No
• Video Decoder: No
• Camera Interface: No
• Adc Channels: 11
• 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: 3
• Input Capture Channels: 1
• Pwm Channels: 9
• 32khz Rtc: Yes
• Calibrated Rc Oscillator: Yes

78
ATtiny87/ATtiny167
• Port A, Bit 3 – PCINT3/ADC3/ISRC/INT1
• Port A, Bit 2 – PCINT2/ADC2/OC0A/DO/MISO
• Port A, Bit 1 – PCINT1/ADC1/TXD/TXLIN
• Port A, Bit 0 – PCINT0/ADC0/RXD/RXLIN
• MOSI: SPI Master Output / Slave Input. When the SPI is enabled as a Slave, this pin is
• PCINT3: Pin Change Interrupt, source 3.
• ADC3: Analog to Digital Converter, channel 3.
• ISCR: Current Source Output pin. While current is sourced by the Current Source module,
• INT1: External Interrupt, source 1. The PA3 pin can serve as an external interrupt source.
• PCINT2: Pin Change Interrupt, source 2.
• ADC2: Analog to Digital Converter, channel 2.
• OC0A: Output Compare Match A or output PWM A for Timer/Counter0. The pin has to be
• DO: Three-wire Mode USI Data Output. Three-wire mode data output overrides PORTA2
• MISO: Master Data input, Slave Data output pin for SPI channel. When the SPI is enabled
• PCINT1: Pin Change Interrupt, source 1.
• ADC1: Analog to Digital Converter, channel 1.
• TXD: UART Transmit pin. When the UART transmitter is enabled, this pin is configured as
• TXLIN: LIN Transmit pin. When the LIN is enabled, this pin is configured as an output
• PCINT0: Pin Change Interrupt, source 0.
• ADC0: Analog to Digital Converter, channel 0.
• RXD: UART Receive pin. When the UART receiver is enabled, this pin is configured as an
• RXLIN: LIN Receive pin. When the LIN is enabled, this pin is configured as an input
configured as an input regardless of the setting of DDA4. When the SPI is enabled as a
Master, the data direction of this pin is controlled by DDA4. When the pin is forced by the
SPI to be an input, the pull-up can still be controlled by the PORTA4 bit.
the user can use the Analog to Digital Converter channel 3 (ADC3) to measure the pin
voltage.
configured as an output (DDA2 set
and it is driven to the port when the data direction bit DDA2 is set. PORTA2 still enables the
pull-up, if the direction is input and PORTA2 is set
as a Master, this pin is configured as an input regardless of the setting of DDA2. When the
SPI is enabled as a Salve, the data direction of this pin is controlled by DDA2. When the
pin is forced to be an input, the pull-up can still be controlled by PORTA2.
an output regardless the value of DDA1. PORTA1 still enables the pull-up, if the direction is
input and PORTA2 is set
regardless the value of DDA1. PORTA1 still enables the pull-up, if the direction is input and
PORTA2 is set
input regardless of the value of DDA0. When the pin is forced to be an input, a logical one
in PORTA0 will turn on the internal pull-up.
regardless of the value of DDA0. When the pin is forced to be an input, a logical one in
PORTA0 will turn on the internal pull-up.
(
one
).
(
one
).
(
one
)
) to serve these functions.
(
one
).
8265B–AVR–09/10